* [PATCH v18 01/10] Make vsyscall_gtod_data handling x86 generic
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:52 ` [tip:x86/vdso] x86, vdso: " tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 02/10] Add new func _install_special_mapping() to mmap.c Stefani Seibold
` (7 subsequent siblings)
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch move the vsyscall_gtod_data handling out of vsyscall_64.c
into an additonal file vsyscall_gtod.c to make the functionality
available for x86 32 bit kernel.
It also adds a new vsyscall_32.c which setup the VVAR page.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/Kconfig | 4 +--
arch/x86/include/asm/clocksource.h | 4 ---
arch/x86/include/asm/fixmap.h | 2 ++
arch/x86/include/asm/vvar.h | 12 ++++++--
arch/x86/kernel/Makefile | 3 +-
arch/x86/kernel/hpet.c | 4 ---
arch/x86/kernel/setup.c | 2 --
arch/x86/kernel/tsc.c | 2 --
arch/x86/kernel/vmlinux.lds.S | 3 --
arch/x86/kernel/vsyscall_32.c | 21 +++++++++++++
arch/x86/kernel/vsyscall_64.c | 45 ----------------------------
arch/x86/kernel/vsyscall_gtod.c | 60 ++++++++++++++++++++++++++++++++++++++
arch/x86/tools/relocs.c | 2 +-
13 files changed, 97 insertions(+), 67 deletions(-)
create mode 100644 arch/x86/kernel/vsyscall_32.c
create mode 100644 arch/x86/kernel/vsyscall_gtod.c
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0af5250..0da3b39 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -107,9 +107,9 @@ config X86
select HAVE_ARCH_SOFT_DIRTY
select CLOCKSOURCE_WATCHDOG
select GENERIC_CLOCKEVENTS
- select ARCH_CLOCKSOURCE_DATA if X86_64
+ select ARCH_CLOCKSOURCE_DATA
select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC)
- select GENERIC_TIME_VSYSCALL if X86_64
+ select GENERIC_TIME_VSYSCALL
select KTIME_SCALAR if X86_32
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clocksource.h
index 16a57f4..eda81dc 100644
--- a/arch/x86/include/asm/clocksource.h
+++ b/arch/x86/include/asm/clocksource.h
@@ -3,8 +3,6 @@
#ifndef _ASM_X86_CLOCKSOURCE_H
#define _ASM_X86_CLOCKSOURCE_H
-#ifdef CONFIG_X86_64
-
#define VCLOCK_NONE 0 /* No vDSO clock available. */
#define VCLOCK_TSC 1 /* vDSO should use vread_tsc. */
#define VCLOCK_HPET 2 /* vDSO should use vread_hpet. */
@@ -14,6 +12,4 @@ struct arch_clocksource_data {
int vclock_mode;
};
-#endif /* CONFIG_X86_64 */
-
#endif /* _ASM_X86_CLOCKSOURCE_H */
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 7252cd3..094d0cc 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -75,6 +75,8 @@ enum fixed_addresses {
#ifdef CONFIG_X86_32
FIX_HOLE,
FIX_VDSO,
+ VVAR_PAGE,
+ VSYSCALL_HPET,
#else
VSYSCALL_LAST_PAGE,
VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index d76ac40..0a534ea 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -16,9 +16,6 @@
* you mess up, the linker will catch it.)
*/
-/* Base address of vvars. This is not ABI. */
-#define VVAR_ADDRESS (-10*1024*1024 - 4096)
-
#if defined(__VVAR_KERNEL_LDS)
/* The kernel linker script defines its own magic to put vvars in the
@@ -29,6 +26,15 @@
#else
+extern char __vvar_page;
+
+/* Base address of vvars. This is not ABI. */
+#ifdef CONFIG_X86_64
+#define VVAR_ADDRESS (-10*1024*1024 - 4096)
+#else
+#define VVAR_ADDRESS (&__vvar_page)
+#endif
+
#define DECLARE_VVAR(offset, type, name) \
static type const * const vvaraddr_ ## name = \
(void *)(VVAR_ADDRESS + (offset));
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index cb648c8..3282eda 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -26,7 +26,8 @@ obj-$(CONFIG_IRQ_WORK) += irq_work.o
obj-y += probe_roms.o
obj-$(CONFIG_X86_32) += i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
-obj-y += syscall_$(BITS).o
+obj-y += syscall_$(BITS).o vsyscall_gtod.o
+obj-$(CONFIG_X86_32) += vsyscall_32.o
obj-$(CONFIG_X86_64) += vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
obj-$(CONFIG_SYSFS) += ksysfs.o
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index da85a8e..54263f0 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -74,9 +74,7 @@ static inline void hpet_writel(unsigned int d, unsigned int a)
static inline void hpet_set_mapping(void)
{
hpet_virt_address = ioremap_nocache(hpet_address, HPET_MMAP_SIZE);
-#ifdef CONFIG_X86_64
__set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VVAR_NOCACHE);
-#endif
}
static inline void hpet_clear_mapping(void)
@@ -752,9 +750,7 @@ static struct clocksource clocksource_hpet = {
.mask = HPET_MASK,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
.resume = hpet_resume_counter,
-#ifdef CONFIG_X86_64
.archdata = { .vclock_mode = VCLOCK_HPET },
-#endif
};
static int hpet_clocksource_register(void)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 06853e6..56ff330 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1182,9 +1182,7 @@ void __init setup_arch(char **cmdline_p)
tboot_probe();
-#ifdef CONFIG_X86_64
map_vsyscall();
-#endif
generic_apic_probe();
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index acb3b60..a99a490 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -988,9 +988,7 @@ static struct clocksource clocksource_tsc = {
.mask = CLOCKSOURCE_MASK(64),
.flags = CLOCK_SOURCE_IS_CONTINUOUS |
CLOCK_SOURCE_MUST_VERIFY,
-#ifdef CONFIG_X86_64
.archdata = { .vclock_mode = VCLOCK_TSC },
-#endif
};
void mark_tsc_unstable(char *reason)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index da6b35a..1d4897b 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -147,7 +147,6 @@ SECTIONS
_edata = .;
} :data
-#ifdef CONFIG_X86_64
. = ALIGN(PAGE_SIZE);
__vvar_page = .;
@@ -169,8 +168,6 @@ SECTIONS
. = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
-#endif /* CONFIG_X86_64 */
-
/* Init code and data - will be freed after init */
. = ALIGN(PAGE_SIZE);
.init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
diff --git a/arch/x86/kernel/vsyscall_32.c b/arch/x86/kernel/vsyscall_32.c
new file mode 100644
index 0000000..0b72db7
--- /dev/null
+++ b/arch/x86/kernel/vsyscall_32.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ *
+ * Modified for x86 32 bit arch by Stefani Seibold <stefani@seibold.net>
+ *
+ * Thanks to hpa@transmeta.com for some useful hint.
+ * Special thanks to Ingo Molnar for his early experience with
+ * a different vsyscall implementation for Linux/IA32 and for the name.
+ *
+ */
+
+#include <asm/vsyscall.h>
+#include <asm/pgtable.h>
+#include <asm/fixmap.h>
+
+void __init map_vsyscall(void)
+{
+ __set_fixmap(VVAR_PAGE, __pa_symbol(&__vvar_page), PAGE_KERNEL_VVAR);
+}
+
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 1f96f93..9ea2876 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -47,14 +47,12 @@
#include <asm/segment.h>
#include <asm/desc.h>
#include <asm/topology.h>
-#include <asm/vgtod.h>
#include <asm/traps.h>
#define CREATE_TRACE_POINTS
#include "vsyscall_trace.h"
DEFINE_VVAR(int, vgetcpu_mode);
-DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE;
@@ -77,48 +75,6 @@ static int __init vsyscall_setup(char *str)
}
early_param("vsyscall", vsyscall_setup);
-void update_vsyscall_tz(void)
-{
- vsyscall_gtod_data.sys_tz = sys_tz;
-}
-
-void update_vsyscall(struct timekeeper *tk)
-{
- struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
-
- write_seqcount_begin(&vdata->seq);
-
- /* copy vsyscall data */
- vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
- vdata->clock.cycle_last = tk->clock->cycle_last;
- vdata->clock.mask = tk->clock->mask;
- vdata->clock.mult = tk->mult;
- vdata->clock.shift = tk->shift;
-
- vdata->wall_time_sec = tk->xtime_sec;
- vdata->wall_time_snsec = tk->xtime_nsec;
-
- vdata->monotonic_time_sec = tk->xtime_sec
- + tk->wall_to_monotonic.tv_sec;
- vdata->monotonic_time_snsec = tk->xtime_nsec
- + (tk->wall_to_monotonic.tv_nsec
- << tk->shift);
- while (vdata->monotonic_time_snsec >=
- (((u64)NSEC_PER_SEC) << tk->shift)) {
- vdata->monotonic_time_snsec -=
- ((u64)NSEC_PER_SEC) << tk->shift;
- vdata->monotonic_time_sec++;
- }
-
- vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
- vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
-
- vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
- tk->wall_to_monotonic);
-
- write_seqcount_end(&vdata->seq);
-}
-
static void warn_bad_vsyscall(const char *level, struct pt_regs *regs,
const char *message)
{
@@ -374,7 +330,6 @@ void __init map_vsyscall(void)
{
extern char __vsyscall_page;
unsigned long physaddr_vsyscall = __pa_symbol(&__vsyscall_page);
- extern char __vvar_page;
unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page);
__set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall,
diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c
new file mode 100644
index 0000000..91862a4
--- /dev/null
+++ b/arch/x86/kernel/vsyscall_gtod.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ *
+ * Modified for x86 32 bit architecture by
+ * Stefani Seibold <stefani@seibold.net>
+ *
+ * Thanks to hpa@transmeta.com for some useful hint.
+ * Special thanks to Ingo Molnar for his early experience with
+ * a different vsyscall implementation for Linux/IA32 and for the name.
+ *
+ */
+
+#include <linux/timekeeper_internal.h>
+#include <asm/vgtod.h>
+
+DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
+
+void update_vsyscall_tz(void)
+{
+ vsyscall_gtod_data.sys_tz = sys_tz;
+}
+
+void update_vsyscall(struct timekeeper *tk)
+{
+ struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
+
+ write_seqcount_begin(&vdata->seq);
+
+ /* copy vsyscall data */
+ vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
+ vdata->clock.cycle_last = tk->clock->cycle_last;
+ vdata->clock.mask = tk->clock->mask;
+ vdata->clock.mult = tk->mult;
+ vdata->clock.shift = tk->shift;
+
+ vdata->wall_time_sec = tk->xtime_sec;
+ vdata->wall_time_snsec = tk->xtime_nsec;
+
+ vdata->monotonic_time_sec = tk->xtime_sec
+ + tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_snsec = tk->xtime_nsec
+ + (tk->wall_to_monotonic.tv_nsec
+ << tk->shift);
+ while (vdata->monotonic_time_snsec >=
+ (((u64)NSEC_PER_SEC) << tk->shift)) {
+ vdata->monotonic_time_snsec -=
+ ((u64)NSEC_PER_SEC) << tk->shift;
+ vdata->monotonic_time_sec++;
+ }
+
+ vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
+ vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
+
+ vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
+ tk->wall_to_monotonic);
+
+ write_seqcount_end(&vdata->seq);
+}
+
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index cfbdbdb..bbb1d22 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -69,8 +69,8 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = {
"__per_cpu_load|"
"init_per_cpu__.*|"
"__end_rodata_hpage_align|"
- "__vvar_page|"
#endif
+ "__vvar_page|"
"_end)$"
};
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Make vsyscall_gtod_data handling x86 generic
2014-02-16 21:52 ` [PATCH v18 01/10] Make vsyscall_gtod_data handling x86 generic Stefani Seibold
@ 2014-02-17 0:52 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:52 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 0d3ad8c4e6246637b289c22dfe12e3dbae516aef
Gitweb: http://git.kernel.org/tip/0d3ad8c4e6246637b289c22dfe12e3dbae516aef
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:39 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:04:06 -0800
x86, vdso: Make vsyscall_gtod_data handling x86 generic
This patch move the vsyscall_gtod_data handling out of vsyscall_64.c
into an additonal file vsyscall_gtod.c to make the functionality
available for the x86 32-bit kernel.
It also adds a new vsyscall_32.c which sets up the VVAR page.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-2-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/Kconfig | 4 +--
arch/x86/include/asm/clocksource.h | 4 ---
arch/x86/include/asm/fixmap.h | 2 ++
arch/x86/include/asm/vvar.h | 12 ++++++--
arch/x86/kernel/Makefile | 3 +-
arch/x86/kernel/hpet.c | 4 ---
arch/x86/kernel/setup.c | 2 --
arch/x86/kernel/tsc.c | 2 --
arch/x86/kernel/vmlinux.lds.S | 3 --
arch/x86/kernel/vsyscall_32.c | 20 +++++++++++++
arch/x86/kernel/vsyscall_64.c | 45 -----------------------------
arch/x86/kernel/vsyscall_gtod.c | 59 ++++++++++++++++++++++++++++++++++++++
arch/x86/tools/relocs.c | 2 +-
13 files changed, 95 insertions(+), 67 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0af5250..0da3b39 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -107,9 +107,9 @@ config X86
select HAVE_ARCH_SOFT_DIRTY
select CLOCKSOURCE_WATCHDOG
select GENERIC_CLOCKEVENTS
- select ARCH_CLOCKSOURCE_DATA if X86_64
+ select ARCH_CLOCKSOURCE_DATA
select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC)
- select GENERIC_TIME_VSYSCALL if X86_64
+ select GENERIC_TIME_VSYSCALL
select KTIME_SCALAR if X86_32
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clocksource.h
index 16a57f4..eda81dc 100644
--- a/arch/x86/include/asm/clocksource.h
+++ b/arch/x86/include/asm/clocksource.h
@@ -3,8 +3,6 @@
#ifndef _ASM_X86_CLOCKSOURCE_H
#define _ASM_X86_CLOCKSOURCE_H
-#ifdef CONFIG_X86_64
-
#define VCLOCK_NONE 0 /* No vDSO clock available. */
#define VCLOCK_TSC 1 /* vDSO should use vread_tsc. */
#define VCLOCK_HPET 2 /* vDSO should use vread_hpet. */
@@ -14,6 +12,4 @@ struct arch_clocksource_data {
int vclock_mode;
};
-#endif /* CONFIG_X86_64 */
-
#endif /* _ASM_X86_CLOCKSOURCE_H */
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 7252cd3..094d0cc 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -75,6 +75,8 @@ enum fixed_addresses {
#ifdef CONFIG_X86_32
FIX_HOLE,
FIX_VDSO,
+ VVAR_PAGE,
+ VSYSCALL_HPET,
#else
VSYSCALL_LAST_PAGE,
VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index d76ac40..0a534ea 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -16,9 +16,6 @@
* you mess up, the linker will catch it.)
*/
-/* Base address of vvars. This is not ABI. */
-#define VVAR_ADDRESS (-10*1024*1024 - 4096)
-
#if defined(__VVAR_KERNEL_LDS)
/* The kernel linker script defines its own magic to put vvars in the
@@ -29,6 +26,15 @@
#else
+extern char __vvar_page;
+
+/* Base address of vvars. This is not ABI. */
+#ifdef CONFIG_X86_64
+#define VVAR_ADDRESS (-10*1024*1024 - 4096)
+#else
+#define VVAR_ADDRESS (&__vvar_page)
+#endif
+
#define DECLARE_VVAR(offset, type, name) \
static type const * const vvaraddr_ ## name = \
(void *)(VVAR_ADDRESS + (offset));
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index cb648c8..3282eda 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -26,7 +26,8 @@ obj-$(CONFIG_IRQ_WORK) += irq_work.o
obj-y += probe_roms.o
obj-$(CONFIG_X86_32) += i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
-obj-y += syscall_$(BITS).o
+obj-y += syscall_$(BITS).o vsyscall_gtod.o
+obj-$(CONFIG_X86_32) += vsyscall_32.o
obj-$(CONFIG_X86_64) += vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
obj-$(CONFIG_SYSFS) += ksysfs.o
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index da85a8e..54263f0 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -74,9 +74,7 @@ static inline void hpet_writel(unsigned int d, unsigned int a)
static inline void hpet_set_mapping(void)
{
hpet_virt_address = ioremap_nocache(hpet_address, HPET_MMAP_SIZE);
-#ifdef CONFIG_X86_64
__set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VVAR_NOCACHE);
-#endif
}
static inline void hpet_clear_mapping(void)
@@ -752,9 +750,7 @@ static struct clocksource clocksource_hpet = {
.mask = HPET_MASK,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
.resume = hpet_resume_counter,
-#ifdef CONFIG_X86_64
.archdata = { .vclock_mode = VCLOCK_HPET },
-#endif
};
static int hpet_clocksource_register(void)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 06853e6..56ff330 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1182,9 +1182,7 @@ void __init setup_arch(char **cmdline_p)
tboot_probe();
-#ifdef CONFIG_X86_64
map_vsyscall();
-#endif
generic_apic_probe();
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index acb3b60..a99a490 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -988,9 +988,7 @@ static struct clocksource clocksource_tsc = {
.mask = CLOCKSOURCE_MASK(64),
.flags = CLOCK_SOURCE_IS_CONTINUOUS |
CLOCK_SOURCE_MUST_VERIFY,
-#ifdef CONFIG_X86_64
.archdata = { .vclock_mode = VCLOCK_TSC },
-#endif
};
void mark_tsc_unstable(char *reason)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index da6b35a..1d4897b 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -147,7 +147,6 @@ SECTIONS
_edata = .;
} :data
-#ifdef CONFIG_X86_64
. = ALIGN(PAGE_SIZE);
__vvar_page = .;
@@ -169,8 +168,6 @@ SECTIONS
. = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
-#endif /* CONFIG_X86_64 */
-
/* Init code and data - will be freed after init */
. = ALIGN(PAGE_SIZE);
.init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
diff --git a/arch/x86/kernel/vsyscall_32.c b/arch/x86/kernel/vsyscall_32.c
new file mode 100644
index 0000000..4b94c47
--- /dev/null
+++ b/arch/x86/kernel/vsyscall_32.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ *
+ * Modified for x86 32 bit arch by Stefani Seibold <stefani@seibold.net>
+ *
+ * Thanks to hpa@transmeta.com for some useful hint.
+ * Special thanks to Ingo Molnar for his early experience with
+ * a different vsyscall implementation for Linux/IA32 and for the name.
+ *
+ */
+
+#include <asm/vsyscall.h>
+#include <asm/pgtable.h>
+#include <asm/fixmap.h>
+
+void __init map_vsyscall(void)
+{
+ __set_fixmap(VVAR_PAGE, __pa_symbol(&__vvar_page), PAGE_KERNEL_VVAR);
+}
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 1f96f93..9ea2876 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -47,14 +47,12 @@
#include <asm/segment.h>
#include <asm/desc.h>
#include <asm/topology.h>
-#include <asm/vgtod.h>
#include <asm/traps.h>
#define CREATE_TRACE_POINTS
#include "vsyscall_trace.h"
DEFINE_VVAR(int, vgetcpu_mode);
-DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE;
@@ -77,48 +75,6 @@ static int __init vsyscall_setup(char *str)
}
early_param("vsyscall", vsyscall_setup);
-void update_vsyscall_tz(void)
-{
- vsyscall_gtod_data.sys_tz = sys_tz;
-}
-
-void update_vsyscall(struct timekeeper *tk)
-{
- struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
-
- write_seqcount_begin(&vdata->seq);
-
- /* copy vsyscall data */
- vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
- vdata->clock.cycle_last = tk->clock->cycle_last;
- vdata->clock.mask = tk->clock->mask;
- vdata->clock.mult = tk->mult;
- vdata->clock.shift = tk->shift;
-
- vdata->wall_time_sec = tk->xtime_sec;
- vdata->wall_time_snsec = tk->xtime_nsec;
-
- vdata->monotonic_time_sec = tk->xtime_sec
- + tk->wall_to_monotonic.tv_sec;
- vdata->monotonic_time_snsec = tk->xtime_nsec
- + (tk->wall_to_monotonic.tv_nsec
- << tk->shift);
- while (vdata->monotonic_time_snsec >=
- (((u64)NSEC_PER_SEC) << tk->shift)) {
- vdata->monotonic_time_snsec -=
- ((u64)NSEC_PER_SEC) << tk->shift;
- vdata->monotonic_time_sec++;
- }
-
- vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
- vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
-
- vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
- tk->wall_to_monotonic);
-
- write_seqcount_end(&vdata->seq);
-}
-
static void warn_bad_vsyscall(const char *level, struct pt_regs *regs,
const char *message)
{
@@ -374,7 +330,6 @@ void __init map_vsyscall(void)
{
extern char __vsyscall_page;
unsigned long physaddr_vsyscall = __pa_symbol(&__vsyscall_page);
- extern char __vvar_page;
unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page);
__set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall,
diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c
new file mode 100644
index 0000000..b5a943d
--- /dev/null
+++ b/arch/x86/kernel/vsyscall_gtod.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ *
+ * Modified for x86 32 bit architecture by
+ * Stefani Seibold <stefani@seibold.net>
+ *
+ * Thanks to hpa@transmeta.com for some useful hint.
+ * Special thanks to Ingo Molnar for his early experience with
+ * a different vsyscall implementation for Linux/IA32 and for the name.
+ *
+ */
+
+#include <linux/timekeeper_internal.h>
+#include <asm/vgtod.h>
+
+DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
+
+void update_vsyscall_tz(void)
+{
+ vsyscall_gtod_data.sys_tz = sys_tz;
+}
+
+void update_vsyscall(struct timekeeper *tk)
+{
+ struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
+
+ write_seqcount_begin(&vdata->seq);
+
+ /* copy vsyscall data */
+ vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
+ vdata->clock.cycle_last = tk->clock->cycle_last;
+ vdata->clock.mask = tk->clock->mask;
+ vdata->clock.mult = tk->mult;
+ vdata->clock.shift = tk->shift;
+
+ vdata->wall_time_sec = tk->xtime_sec;
+ vdata->wall_time_snsec = tk->xtime_nsec;
+
+ vdata->monotonic_time_sec = tk->xtime_sec
+ + tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_snsec = tk->xtime_nsec
+ + (tk->wall_to_monotonic.tv_nsec
+ << tk->shift);
+ while (vdata->monotonic_time_snsec >=
+ (((u64)NSEC_PER_SEC) << tk->shift)) {
+ vdata->monotonic_time_snsec -=
+ ((u64)NSEC_PER_SEC) << tk->shift;
+ vdata->monotonic_time_sec++;
+ }
+
+ vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
+ vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
+
+ vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
+ tk->wall_to_monotonic);
+
+ write_seqcount_end(&vdata->seq);
+}
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index cfbdbdb..bbb1d22 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -69,8 +69,8 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = {
"__per_cpu_load|"
"init_per_cpu__.*|"
"__end_rodata_hpage_align|"
- "__vvar_page|"
#endif
+ "__vvar_page|"
"_end)$"
};
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 02/10] Add new func _install_special_mapping() to mmap.c
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 01/10] Make vsyscall_gtod_data handling x86 generic Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:52 ` [tip:x86/vdso] mm: " tip-bot for Stefani Seibold
2014-02-20 4:51 ` [tip:x86/vdso] mm: Clean up style in install_special_mapping() tip-bot for H. Peter Anvin
2014-02-16 21:52 ` [PATCH v18 03/10] revamp vclock_gettime.c Stefani Seibold
` (6 subsequent siblings)
8 siblings, 2 replies; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
The _install_special_mapping() is the new base function for
install_special_mapping(). This function will return a pointer of the
created VMA or a error code in an ERR_PTR()
This new function will be needed by the for the vdso 32 bit support to map the
additonal vvar and hpet pages into the 32 bit address space. This will be done
with io_remap_pfn_range() and remap_pfn_range, which requieres a vm_area_struct.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
include/linux/mm.h | 3 +++
mm/mmap.c | 20 ++++++++++++++++----
2 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f28f46e..55342aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1740,6 +1740,9 @@ extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
extern struct file *get_mm_exe_file(struct mm_struct *mm);
extern int may_expand_vm(struct mm_struct *mm, unsigned long npages);
+extern struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
+ unsigned long addr, unsigned long len,
+ unsigned long flags, struct page **pages);
extern int install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
unsigned long flags, struct page **pages);
diff --git a/mm/mmap.c b/mm/mmap.c
index 20ff0c3..81ba54f 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2918,7 +2918,7 @@ static const struct vm_operations_struct special_mapping_vmops = {
* The array pointer and the pages it points to are assumed to stay alive
* for as long as this mapping might exist.
*/
-int install_special_mapping(struct mm_struct *mm,
+struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
unsigned long vm_flags, struct page **pages)
{
@@ -2927,7 +2927,7 @@ int install_special_mapping(struct mm_struct *mm,
vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (unlikely(vma == NULL))
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&vma->anon_vma_chain);
vma->vm_mm = mm;
@@ -2948,11 +2948,23 @@ int install_special_mapping(struct mm_struct *mm,
perf_event_mmap(vma);
- return 0;
+ return vma;
out:
kmem_cache_free(vm_area_cachep, vma);
- return ret;
+ return ERR_PTR(ret);
+}
+
+int install_special_mapping(struct mm_struct *mm,
+ unsigned long addr, unsigned long len,
+ unsigned long vm_flags, struct page **pages)
+{
+ struct vm_area_struct *vma = _install_special_mapping(mm,
+ addr, len, vm_flags, pages);
+
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+ return 0;
}
static DEFINE_MUTEX(mm_all_locks_mutex);
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] mm: Add new func _install_special_mapping() to mmap.c
2014-02-16 21:52 ` [PATCH v18 02/10] Add new func _install_special_mapping() to mmap.c Stefani Seibold
@ 2014-02-17 0:52 ` tip-bot for Stefani Seibold
2014-02-20 4:51 ` [tip:x86/vdso] mm: Clean up style in install_special_mapping() tip-bot for H. Peter Anvin
1 sibling, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:52 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 48be0cb586e850e3ff5c37fe9339f233f9c893e4
Gitweb: http://git.kernel.org/tip/48be0cb586e850e3ff5c37fe9339f233f9c893e4
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:40 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:04:23 -0800
mm: Add new func _install_special_mapping() to mmap.c
The _install_special_mapping() is the new base function for
install_special_mapping(). This function will return a pointer of the
created VMA or a error code in an ERR_PTR().
This new function will be needed by the for the x86 vdso 32-bit
support to map the additonal vvar and hpet pages into the 32 bit
address space. This will be done with io_remap_pfn_range() and
remap_pfn_range, which requieres a vm_area_struct.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-3-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
include/linux/mm.h | 3 +++
mm/mmap.c | 20 ++++++++++++++++----
2 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f28f46e..55342aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1740,6 +1740,9 @@ extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
extern struct file *get_mm_exe_file(struct mm_struct *mm);
extern int may_expand_vm(struct mm_struct *mm, unsigned long npages);
+extern struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
+ unsigned long addr, unsigned long len,
+ unsigned long flags, struct page **pages);
extern int install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
unsigned long flags, struct page **pages);
diff --git a/mm/mmap.c b/mm/mmap.c
index 20ff0c3..81ba54f 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2918,7 +2918,7 @@ static const struct vm_operations_struct special_mapping_vmops = {
* The array pointer and the pages it points to are assumed to stay alive
* for as long as this mapping might exist.
*/
-int install_special_mapping(struct mm_struct *mm,
+struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
unsigned long vm_flags, struct page **pages)
{
@@ -2927,7 +2927,7 @@ int install_special_mapping(struct mm_struct *mm,
vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (unlikely(vma == NULL))
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&vma->anon_vma_chain);
vma->vm_mm = mm;
@@ -2948,11 +2948,23 @@ int install_special_mapping(struct mm_struct *mm,
perf_event_mmap(vma);
- return 0;
+ return vma;
out:
kmem_cache_free(vm_area_cachep, vma);
- return ret;
+ return ERR_PTR(ret);
+}
+
+int install_special_mapping(struct mm_struct *mm,
+ unsigned long addr, unsigned long len,
+ unsigned long vm_flags, struct page **pages)
+{
+ struct vm_area_struct *vma = _install_special_mapping(mm,
+ addr, len, vm_flags, pages);
+
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+ return 0;
}
static DEFINE_MUTEX(mm_all_locks_mutex);
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] mm: Clean up style in install_special_mapping()
2014-02-16 21:52 ` [PATCH v18 02/10] Add new func _install_special_mapping() to mmap.c Stefani Seibold
2014-02-17 0:52 ` [tip:x86/vdso] mm: " tip-bot for Stefani Seibold
@ 2014-02-20 4:51 ` tip-bot for H. Peter Anvin
1 sibling, 0 replies; 31+ messages in thread
From: tip-bot for H. Peter Anvin @ 2014-02-20 4:51 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, tglx, fengguang.wu, hpa
Commit-ID: 3af7111e2066a641510c16a4e9e82dd81550115b
Gitweb: http://git.kernel.org/tip/3af7111e2066a641510c16a4e9e82dd81550115b
Author: H. Peter Anvin <hpa@linux.intel.com>
AuthorDate: Wed, 19 Feb 2014 20:46:57 -0800
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Wed, 19 Feb 2014 20:46:57 -0800
mm: Clean up style in install_special_mapping()
We can clean up the style in install_special_mapping(), and make it
use PTR_ERR_OR_ZERO().
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Link: http://lkml.kernel.org/r/1392587568-7325-3-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
mm/mmap.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index 81ba54f..6b78a77 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2959,12 +2959,10 @@ int install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
unsigned long vm_flags, struct page **pages)
{
- struct vm_area_struct *vma = _install_special_mapping(mm,
- addr, len, vm_flags, pages);
+ struct vm_area_struct *vma;
- if (IS_ERR(vma))
- return PTR_ERR(vma);
- return 0;
+ vma = _install_special_mapping(mm, addr, len, vm_flags, pages);
+ return PTR_ERR_OR_ZERO(vma);
}
static DEFINE_MUTEX(mm_all_locks_mutex);
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 03/10] revamp vclock_gettime.c
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 01/10] Make vsyscall_gtod_data handling x86 generic Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 02/10] Add new func _install_special_mapping() to mmap.c Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:52 ` [tip:x86/vdso] x86, vdso: Revamp vclock_gettime.c tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 04/10] vclock_gettime.c __vdso_clock_gettime cleanup Stefani Seibold
` (5 subsequent siblings)
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This intermediate patch revamps the vclock_gettime.c by moving some functions
around. It is only for spliting purpose, to make whole the 32 bit vdso timer
patch easier to review.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/vdso/vclock_gettime.c | 85 +++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 43 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index eb5d7a5..bbc8065 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -26,41 +26,26 @@
#define gtod (&VVAR(vsyscall_gtod_data))
-notrace static cycle_t vread_tsc(void)
+static notrace cycle_t vread_hpet(void)
{
- cycle_t ret;
- u64 last;
-
- /*
- * Empirically, a fence (of type that depends on the CPU)
- * before rdtsc is enough to ensure that rdtsc is ordered
- * with respect to loads. The various CPU manuals are unclear
- * as to whether rdtsc can be reordered with later loads,
- * but no one has ever seen it happen.
- */
- rdtsc_barrier();
- ret = (cycle_t)vget_cycles();
-
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
-
- if (likely(ret >= last))
- return ret;
+ return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
+}
- /*
- * GCC likes to generate cmov here, but this branch is extremely
- * predictable (it's just a funciton of time and the likely is
- * very likely) and there's a data dependence, so force GCC
- * to generate a branch instead. I don't barrier() because
- * we don't actually need a barrier, and if this function
- * ever gets inlined it will generate worse code.
- */
- asm volatile ("");
- return last;
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+{
+ long ret;
+ asm("syscall" : "=a" (ret) :
+ "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory");
+ return ret;
}
-static notrace cycle_t vread_hpet(void)
+notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
{
- return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
+ long ret;
+
+ asm("syscall" : "=a" (ret) :
+ "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
+ return ret;
}
#ifdef CONFIG_PARAVIRT_CLOCK
@@ -133,23 +118,37 @@ static notrace cycle_t vread_pvclock(int *mode)
}
#endif
-notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+notrace static cycle_t vread_tsc(void)
{
- long ret;
- asm("syscall" : "=a" (ret) :
- "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "memory");
- return ret;
-}
+ cycle_t ret;
+ u64 last;
-notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
-{
- long ret;
+ /*
+ * Empirically, a fence (of type that depends on the CPU)
+ * before rdtsc is enough to ensure that rdtsc is ordered
+ * with respect to loads. The various CPU manuals are unclear
+ * as to whether rdtsc can be reordered with later loads,
+ * but no one has ever seen it happen.
+ */
+ rdtsc_barrier();
+ ret = (cycle_t)vget_cycles();
- asm("syscall" : "=a" (ret) :
- "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
- return ret;
-}
+ last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ if (likely(ret >= last))
+ return ret;
+
+ /*
+ * GCC likes to generate cmov here, but this branch is extremely
+ * predictable (it's just a funciton of time and the likely is
+ * very likely) and there's a data dependence, so force GCC
+ * to generate a branch instead. I don't barrier() because
+ * we don't actually need a barrier, and if this function
+ * ever gets inlined it will generate worse code.
+ */
+ asm volatile ("");
+ return last;
+}
notrace static inline u64 vgetsns(int *mode)
{
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Revamp vclock_gettime.c
2014-02-16 21:52 ` [PATCH v18 03/10] revamp vclock_gettime.c Stefani Seibold
@ 2014-02-17 0:52 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:52 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 0b20a1f58d3502a8dfec98a8926f26c43429bee7
Gitweb: http://git.kernel.org/tip/0b20a1f58d3502a8dfec98a8926f26c43429bee7
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:41 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:06:39 -0800
x86, vdso: Revamp vclock_gettime.c
This intermediate patch revamps the vclock_gettime.c by moving some
functions around. This is only code movement, to make the whole
32-bit vdso timer patchset easier to review.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-4-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vclock_gettime.c | 85 +++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 43 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index eb5d7a5..bbc8065 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -26,41 +26,26 @@
#define gtod (&VVAR(vsyscall_gtod_data))
-notrace static cycle_t vread_tsc(void)
+static notrace cycle_t vread_hpet(void)
{
- cycle_t ret;
- u64 last;
-
- /*
- * Empirically, a fence (of type that depends on the CPU)
- * before rdtsc is enough to ensure that rdtsc is ordered
- * with respect to loads. The various CPU manuals are unclear
- * as to whether rdtsc can be reordered with later loads,
- * but no one has ever seen it happen.
- */
- rdtsc_barrier();
- ret = (cycle_t)vget_cycles();
-
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
-
- if (likely(ret >= last))
- return ret;
+ return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
+}
- /*
- * GCC likes to generate cmov here, but this branch is extremely
- * predictable (it's just a funciton of time and the likely is
- * very likely) and there's a data dependence, so force GCC
- * to generate a branch instead. I don't barrier() because
- * we don't actually need a barrier, and if this function
- * ever gets inlined it will generate worse code.
- */
- asm volatile ("");
- return last;
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+{
+ long ret;
+ asm("syscall" : "=a" (ret) :
+ "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory");
+ return ret;
}
-static notrace cycle_t vread_hpet(void)
+notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
{
- return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
+ long ret;
+
+ asm("syscall" : "=a" (ret) :
+ "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
+ return ret;
}
#ifdef CONFIG_PARAVIRT_CLOCK
@@ -133,23 +118,37 @@ static notrace cycle_t vread_pvclock(int *mode)
}
#endif
-notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+notrace static cycle_t vread_tsc(void)
{
- long ret;
- asm("syscall" : "=a" (ret) :
- "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "memory");
- return ret;
-}
+ cycle_t ret;
+ u64 last;
-notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
-{
- long ret;
+ /*
+ * Empirically, a fence (of type that depends on the CPU)
+ * before rdtsc is enough to ensure that rdtsc is ordered
+ * with respect to loads. The various CPU manuals are unclear
+ * as to whether rdtsc can be reordered with later loads,
+ * but no one has ever seen it happen.
+ */
+ rdtsc_barrier();
+ ret = (cycle_t)vget_cycles();
- asm("syscall" : "=a" (ret) :
- "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
- return ret;
-}
+ last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ if (likely(ret >= last))
+ return ret;
+
+ /*
+ * GCC likes to generate cmov here, but this branch is extremely
+ * predictable (it's just a funciton of time and the likely is
+ * very likely) and there's a data dependence, so force GCC
+ * to generate a branch instead. I don't barrier() because
+ * we don't actually need a barrier, and if this function
+ * ever gets inlined it will generate worse code.
+ */
+ asm volatile ("");
+ return last;
+}
notrace static inline u64 vgetsns(int *mode)
{
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 04/10] vclock_gettime.c __vdso_clock_gettime cleanup
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (2 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 03/10] revamp vclock_gettime.c Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: " tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 05/10] replace VVAR(vsyscall_gtod_data) by gtod macro Stefani Seibold
` (4 subsequent siblings)
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch is a small code cleanup for the __vdso_clock_gettime() function.
It removes the unneeded return values from do_monotonic_coarse() and
do_realtime_coarse() and add a fallback label for doing the kernel
gettimeofday() system call.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/vdso/vclock_gettime.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index bbc8065..fd074dd 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -209,7 +209,7 @@ notrace static int do_monotonic(struct timespec *ts)
return mode;
}
-notrace static int do_realtime_coarse(struct timespec *ts)
+notrace static void do_realtime_coarse(struct timespec *ts)
{
unsigned long seq;
do {
@@ -217,10 +217,9 @@ notrace static int do_realtime_coarse(struct timespec *ts)
ts->tv_sec = gtod->wall_time_coarse.tv_sec;
ts->tv_nsec = gtod->wall_time_coarse.tv_nsec;
} while (unlikely(read_seqcount_retry(>od->seq, seq)));
- return 0;
}
-notrace static int do_monotonic_coarse(struct timespec *ts)
+notrace static void do_monotonic_coarse(struct timespec *ts)
{
unsigned long seq;
do {
@@ -228,30 +227,32 @@ notrace static int do_monotonic_coarse(struct timespec *ts)
ts->tv_sec = gtod->monotonic_time_coarse.tv_sec;
ts->tv_nsec = gtod->monotonic_time_coarse.tv_nsec;
} while (unlikely(read_seqcount_retry(>od->seq, seq)));
-
- return 0;
}
notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
{
- int ret = VCLOCK_NONE;
-
switch (clock) {
case CLOCK_REALTIME:
- ret = do_realtime(ts);
+ if (do_realtime(ts) == VCLOCK_NONE)
+ goto fallback;
break;
case CLOCK_MONOTONIC:
- ret = do_monotonic(ts);
+ if (do_monotonic(ts) == VCLOCK_NONE)
+ goto fallback;
break;
case CLOCK_REALTIME_COARSE:
- return do_realtime_coarse(ts);
+ do_realtime_coarse(ts);
+ break;
case CLOCK_MONOTONIC_COARSE:
- return do_monotonic_coarse(ts);
+ do_monotonic_coarse(ts);
+ break;
+ default:
+ goto fallback;
}
- if (ret == VCLOCK_NONE)
- return vdso_fallback_gettime(clock, ts);
return 0;
+fallback:
+ return vdso_fallback_gettime(clock, ts);
}
int clock_gettime(clockid_t, struct timespec *)
__attribute__((weak, alias("__vdso_clock_gettime")));
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: vclock_gettime.c __vdso_clock_gettime cleanup
2014-02-16 21:52 ` [PATCH v18 04/10] vclock_gettime.c __vdso_clock_gettime cleanup Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 3b19f50facf0488e193ebae00b864fdaeeb25dbb
Gitweb: http://git.kernel.org/tip/3b19f50facf0488e193ebae00b864fdaeeb25dbb
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:42 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:06:47 -0800
x86, vdso: vclock_gettime.c __vdso_clock_gettime cleanup
This patch is a small code cleanup for the __vdso_clock_gettime()
function.
It removes the unneeded return values from do_monotonic_coarse() and
do_realtime_coarse() and add a fallback label for doing the kernel
gettimeofday() system call.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-5-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vclock_gettime.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index bbc8065..fd074dd 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -209,7 +209,7 @@ notrace static int do_monotonic(struct timespec *ts)
return mode;
}
-notrace static int do_realtime_coarse(struct timespec *ts)
+notrace static void do_realtime_coarse(struct timespec *ts)
{
unsigned long seq;
do {
@@ -217,10 +217,9 @@ notrace static int do_realtime_coarse(struct timespec *ts)
ts->tv_sec = gtod->wall_time_coarse.tv_sec;
ts->tv_nsec = gtod->wall_time_coarse.tv_nsec;
} while (unlikely(read_seqcount_retry(>od->seq, seq)));
- return 0;
}
-notrace static int do_monotonic_coarse(struct timespec *ts)
+notrace static void do_monotonic_coarse(struct timespec *ts)
{
unsigned long seq;
do {
@@ -228,30 +227,32 @@ notrace static int do_monotonic_coarse(struct timespec *ts)
ts->tv_sec = gtod->monotonic_time_coarse.tv_sec;
ts->tv_nsec = gtod->monotonic_time_coarse.tv_nsec;
} while (unlikely(read_seqcount_retry(>od->seq, seq)));
-
- return 0;
}
notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
{
- int ret = VCLOCK_NONE;
-
switch (clock) {
case CLOCK_REALTIME:
- ret = do_realtime(ts);
+ if (do_realtime(ts) == VCLOCK_NONE)
+ goto fallback;
break;
case CLOCK_MONOTONIC:
- ret = do_monotonic(ts);
+ if (do_monotonic(ts) == VCLOCK_NONE)
+ goto fallback;
break;
case CLOCK_REALTIME_COARSE:
- return do_realtime_coarse(ts);
+ do_realtime_coarse(ts);
+ break;
case CLOCK_MONOTONIC_COARSE:
- return do_monotonic_coarse(ts);
+ do_monotonic_coarse(ts);
+ break;
+ default:
+ goto fallback;
}
- if (ret == VCLOCK_NONE)
- return vdso_fallback_gettime(clock, ts);
return 0;
+fallback:
+ return vdso_fallback_gettime(clock, ts);
}
int clock_gettime(clockid_t, struct timespec *)
__attribute__((weak, alias("__vdso_clock_gettime")));
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 05/10] replace VVAR(vsyscall_gtod_data) by gtod macro
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (3 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 04/10] vclock_gettime.c __vdso_clock_gettime cleanup Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Replace VVAR(vsyscall_gtod_data) by the " tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 06/10] cleanup __vdso_gettimeofday Stefani Seibold
` (3 subsequent siblings)
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
There a currently more than 30 users of the gtod macro, so replace the
last VVAR(vsyscall_gtod_data) by gtod macro.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/vdso/vclock_gettime.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index fd074dd..743f277 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -109,7 +109,7 @@ static notrace cycle_t vread_pvclock(int *mode)
*mode = VCLOCK_NONE;
/* refer to tsc.c read_tsc() comment for rationale */
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ last = gtod->clock.cycle_last;
if (likely(ret >= last))
return ret;
@@ -133,7 +133,7 @@ notrace static cycle_t vread_tsc(void)
rdtsc_barrier();
ret = (cycle_t)vget_cycles();
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ last = gtod->clock.cycle_last;
if (likely(ret >= last))
return ret;
@@ -288,7 +288,7 @@ int gettimeofday(struct timeval *, struct timezone *)
notrace time_t __vdso_time(time_t *t)
{
/* This is atomic on x86_64 so we don't need any locks. */
- time_t result = ACCESS_ONCE(VVAR(vsyscall_gtod_data).wall_time_sec);
+ time_t result = ACCESS_ONCE(gtod->wall_time_sec);
if (t)
*t = result;
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Replace VVAR(vsyscall_gtod_data) by the gtod macro
2014-02-16 21:52 ` [PATCH v18 05/10] replace VVAR(vsyscall_gtod_data) by gtod macro Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: d3e68e3e3fed760169cef2fa95e73551f5d24022
Gitweb: http://git.kernel.org/tip/d3e68e3e3fed760169cef2fa95e73551f5d24022
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:43 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:07:01 -0800
x86, vdso: Replace VVAR(vsyscall_gtod_data) by the gtod macro
There a currently more than 30 users of the gtod macro, so replace the
last VVAR(vsyscall_gtod_data) by gtod macro.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-6-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vclock_gettime.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index fd074dd..743f277 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -109,7 +109,7 @@ static notrace cycle_t vread_pvclock(int *mode)
*mode = VCLOCK_NONE;
/* refer to tsc.c read_tsc() comment for rationale */
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ last = gtod->clock.cycle_last;
if (likely(ret >= last))
return ret;
@@ -133,7 +133,7 @@ notrace static cycle_t vread_tsc(void)
rdtsc_barrier();
ret = (cycle_t)vget_cycles();
- last = VVAR(vsyscall_gtod_data).clock.cycle_last;
+ last = gtod->clock.cycle_last;
if (likely(ret >= last))
return ret;
@@ -288,7 +288,7 @@ int gettimeofday(struct timeval *, struct timezone *)
notrace time_t __vdso_time(time_t *t)
{
/* This is atomic on x86_64 so we don't need any locks. */
- time_t result = ACCESS_ONCE(VVAR(vsyscall_gtod_data).wall_time_sec);
+ time_t result = ACCESS_ONCE(gtod->wall_time_sec);
if (t)
*t = result;
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 06/10] cleanup __vdso_gettimeofday
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (4 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 05/10] replace VVAR(vsyscall_gtod_data) by gtod macro Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Cleanup __vdso_gettimeofday() tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 07/10] introduce VVAR marco for vdso32 Stefani Seibold
` (2 subsequent siblings)
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch do a little cleanup for the __vdso_gettimeofday() function.
It kick out an unneeded ret local variable and makes the code faster if
only the timezone is needed.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/vdso/vclock_gettime.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 743f277..09dae4a 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -259,13 +259,12 @@ int clock_gettime(clockid_t, struct timespec *)
notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
{
- long ret = VCLOCK_NONE;
-
if (likely(tv != NULL)) {
BUILD_BUG_ON(offsetof(struct timeval, tv_usec) !=
offsetof(struct timespec, tv_nsec) ||
sizeof(*tv) != sizeof(struct timespec));
- ret = do_realtime((struct timespec *)tv);
+ if (unlikely(do_realtime((struct timespec *)tv) == VCLOCK_NONE))
+ return vdso_fallback_gtod(tv, tz);
tv->tv_usec /= 1000;
}
if (unlikely(tz != NULL)) {
@@ -274,8 +273,6 @@ notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
tz->tz_dsttime = gtod->sys_tz.tz_dsttime;
}
- if (ret == VCLOCK_NONE)
- return vdso_fallback_gtod(tv, tz);
return 0;
}
int gettimeofday(struct timeval *, struct timezone *)
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Cleanup __vdso_gettimeofday()
2014-02-16 21:52 ` [PATCH v18 06/10] cleanup __vdso_gettimeofday Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: bada923abe5d8b015efe0e49ca47f76af853972d
Gitweb: http://git.kernel.org/tip/bada923abe5d8b015efe0e49ca47f76af853972d
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:44 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:07:31 -0800
x86, vdso: Cleanup __vdso_gettimeofday()
This patch do a little cleanup for the __vdso_gettimeofday() function.
It kicks out an unneeded ret local variable and makes the code faster
if only the timezone is needed.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-7-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vclock_gettime.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 743f277..09dae4a 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -259,13 +259,12 @@ int clock_gettime(clockid_t, struct timespec *)
notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
{
- long ret = VCLOCK_NONE;
-
if (likely(tv != NULL)) {
BUILD_BUG_ON(offsetof(struct timeval, tv_usec) !=
offsetof(struct timespec, tv_nsec) ||
sizeof(*tv) != sizeof(struct timespec));
- ret = do_realtime((struct timespec *)tv);
+ if (unlikely(do_realtime((struct timespec *)tv) == VCLOCK_NONE))
+ return vdso_fallback_gtod(tv, tz);
tv->tv_usec /= 1000;
}
if (unlikely(tz != NULL)) {
@@ -274,8 +273,6 @@ notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
tz->tz_dsttime = gtod->sys_tz.tz_dsttime;
}
- if (ret == VCLOCK_NONE)
- return vdso_fallback_gtod(tv, tz);
return 0;
}
int gettimeofday(struct timeval *, struct timezone *)
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 07/10] introduce VVAR marco for vdso32
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (5 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 06/10] cleanup __vdso_gettimeofday Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Introduce " tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 08/10] Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel Stefani Seibold
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch revamp the vvar.h for introduce the VVAR macro for vdso32.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/include/asm/vvar.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index 0a534ea..52c79ff 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -26,6 +26,15 @@
#else
+#ifdef BUILD_VDSO32
+
+#define DECLARE_VVAR(offset, type, name) \
+ extern type vvar_ ## name __attribute__((visibility("hidden")));
+
+#define VVAR(name) (vvar_ ## name)
+
+#else
+
extern char __vvar_page;
/* Base address of vvars. This is not ABI. */
@@ -39,12 +48,13 @@ extern char __vvar_page;
static type const * const vvaraddr_ ## name = \
(void *)(VVAR_ADDRESS + (offset));
+#define VVAR(name) (*vvaraddr_ ## name)
+#endif
+
#define DEFINE_VVAR(type, name) \
type name \
__attribute__((section(".vvar_" #name), aligned(16))) __visible
-#define VVAR(name) (*vvaraddr_ ## name)
-
#endif
/* DECLARE_VVAR(offset, type, name) */
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Introduce VVAR marco for vdso32
2014-02-16 21:52 ` [PATCH v18 07/10] introduce VVAR marco for vdso32 Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 995106bc0373be03295aa6e0e380dd33a3a37ea4
Gitweb: http://git.kernel.org/tip/995106bc0373be03295aa6e0e380dd33a3a37ea4
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:45 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:07:45 -0800
x86, vdso: Introduce VVAR marco for vdso32
This patch revamps vvar.h for introduce the VVAR macro for vdso32.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-8-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/include/asm/vvar.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index 0a534ea..52c79ff 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -26,6 +26,15 @@
#else
+#ifdef BUILD_VDSO32
+
+#define DECLARE_VVAR(offset, type, name) \
+ extern type vvar_ ## name __attribute__((visibility("hidden")));
+
+#define VVAR(name) (vvar_ ## name)
+
+#else
+
extern char __vvar_page;
/* Base address of vvars. This is not ABI. */
@@ -39,12 +48,13 @@ extern char __vvar_page;
static type const * const vvaraddr_ ## name = \
(void *)(VVAR_ADDRESS + (offset));
+#define VVAR(name) (*vvaraddr_ ## name)
+#endif
+
#define DEFINE_VVAR(type, name) \
type name \
__attribute__((section(".vvar_" #name), aligned(16))) __visible
-#define VVAR(name) (*vvaraddr_ ## name)
-
#endif
/* DECLARE_VVAR(offset, type, name) */
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 08/10] Add 32 bit VDSO time support for 32 bit kernel
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (6 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 07/10] introduce VVAR marco for vdso32 Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 32-bit kernel tip-bot for Stefani Seibold
2014-02-16 21:52 ` [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel Stefani Seibold
8 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch add the time support for 32 bit a VDSO to a 32 bit kernel.
For 32 bit programs running on a 32 bit kernel, the same mechanism is
used as for 64 bit programs running on a 64 bit kernel.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/include/asm/vdso.h | 3 ++
arch/x86/include/asm/vdso32.h | 11 ++++++
arch/x86/vdso/Makefile | 8 ++++
arch/x86/vdso/vclock_gettime.c | 74 ++++++++++++++++++++++++++++++++---
arch/x86/vdso/vdso-layout.lds.S | 22 +++++++++++
arch/x86/vdso/vdso32-setup.c | 53 ++++++++++++++++++++++---
arch/x86/vdso/vdso32/vclock_gettime.c | 36 +++++++++++++++++
arch/x86/vdso/vdso32/vdso32.lds.S | 9 +++++
8 files changed, 204 insertions(+), 12 deletions(-)
create mode 100644 arch/x86/include/asm/vdso32.h
create mode 100644 arch/x86/vdso/vdso32/vclock_gettime.c
diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h
index fddb53d..fe3cef9 100644
--- a/arch/x86/include/asm/vdso.h
+++ b/arch/x86/include/asm/vdso.h
@@ -2,6 +2,9 @@
#define _ASM_X86_VDSO_H
#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+
+#include <asm/vdso32.h>
+
extern const char VDSO32_PRELINK[];
/*
diff --git a/arch/x86/include/asm/vdso32.h b/arch/x86/include/asm/vdso32.h
new file mode 100644
index 0000000..7efb701
--- /dev/null
+++ b/arch/x86/include/asm/vdso32.h
@@ -0,0 +1,11 @@
+#ifndef _ASM_X86_VDSO32_H
+#define _ASM_X86_VDSO32_H
+
+#define VDSO_BASE_PAGE 0
+#define VDSO_VVAR_PAGE 1
+#define VDSO_HPET_PAGE 2
+#define VDSO_PAGES 3
+#define VDSO_PREV_PAGES 2
+#define VDSO_OFFSET(x) ((x) * PAGE_SIZE)
+
+#endif
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index fd14be1..92daaa6 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -145,8 +145,16 @@ KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
$(vdso32-images:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
$(vdso32-images:%=$(obj)/%.dbg): asflags-$(CONFIG_X86_64) += -m32
+KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
+KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=3 -freg-struct-return -fpic
+$(vdso32-images:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
+
$(vdso32-images:%=$(obj)/%.dbg): $(obj)/vdso32-%.so.dbg: FORCE \
$(obj)/vdso32/vdso32.lds \
+ $(obj)/vdso32/vclock_gettime.o \
$(obj)/vdso32/note.o \
$(obj)/vdso32/%.o
$(call if_changed,vdso)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 09dae4a..fcbc974 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -4,6 +4,9 @@
*
* Fast user context implementation of clock_gettime, gettimeofday, and time.
*
+ * 32 Bit compat layer by Stefani Seibold <stefani@seibold.net>
+ * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
+ *
* The code should have no internal unresolved relocations.
* Check with readelf after changing.
*/
@@ -12,13 +15,11 @@
#define DISABLE_BRANCH_PROFILING
#include <linux/kernel.h>
-#include <linux/posix-timers.h>
-#include <linux/time.h>
+#include <uapi/linux/time.h>
#include <linux/string.h>
#include <asm/vsyscall.h>
#include <asm/fixmap.h>
#include <asm/vgtod.h>
-#include <asm/timex.h>
#include <asm/hpet.h>
#include <asm/unistd.h>
#include <asm/io.h>
@@ -26,6 +27,12 @@
#define gtod (&VVAR(vsyscall_gtod_data))
+extern int __vdso_clock_gettime(clockid_t clock, struct timespec *ts);
+extern int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
+extern time_t __vdso_time(time_t *t);
+
+#ifndef BUILD_VDSO32
+
static notrace cycle_t vread_hpet(void)
{
return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
@@ -118,6 +125,59 @@ static notrace cycle_t vread_pvclock(int *mode)
}
#endif
+#else
+
+extern u8 hpet_page
+ __attribute__((visibility("hidden")));
+
+#ifdef CONFIG_HPET_TIMER
+static notrace cycle_t vread_hpet(void)
+{
+ return readl((const void __iomem *)(&hpet_page + HPET_COUNTER));
+}
+#endif
+
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+{
+ long ret;
+
+ asm(
+ "mov %%ebx, %%edx \n"
+ "mov %2, %%ebx \n"
+ "call VDSO32_vsyscall \n"
+ "mov %%edx, %%ebx \n"
+ : "=a" (ret)
+ : "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
+ : "memory", "edx");
+ return ret;
+}
+
+notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
+{
+ long ret;
+
+ asm(
+ "mov %%ebx, %%edx \n"
+ "mov %2, %%ebx \n"
+ "call VDSO32_vsyscall \n"
+ "mov %%edx, %%ebx \n"
+ : "=a" (ret)
+ : "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
+ : "memory", "edx");
+ return ret;
+}
+
+#ifdef CONFIG_PARAVIRT_CLOCK
+
+static notrace cycle_t vread_pvclock(int *mode)
+{
+ *mode = VCLOCK_NONE;
+ return 0;
+}
+#endif
+
+#endif
+
notrace static cycle_t vread_tsc(void)
{
cycle_t ret;
@@ -131,7 +191,7 @@ notrace static cycle_t vread_tsc(void)
* but no one has ever seen it happen.
*/
rdtsc_barrier();
- ret = (cycle_t)vget_cycles();
+ ret = (cycle_t)__native_read_tsc();
last = gtod->clock.cycle_last;
@@ -152,12 +212,14 @@ notrace static cycle_t vread_tsc(void)
notrace static inline u64 vgetsns(int *mode)
{
- long v;
+ u64 v;
cycles_t cycles;
if (gtod->clock.vclock_mode == VCLOCK_TSC)
cycles = vread_tsc();
+#ifdef CONFIG_HPET_TIMER
else if (gtod->clock.vclock_mode == VCLOCK_HPET)
cycles = vread_hpet();
+#endif
#ifdef CONFIG_PARAVIRT_CLOCK
else if (gtod->clock.vclock_mode == VCLOCK_PVCLOCK)
cycles = vread_pvclock(mode);
@@ -284,7 +346,7 @@ int gettimeofday(struct timeval *, struct timezone *)
*/
notrace time_t __vdso_time(time_t *t)
{
- /* This is atomic on x86_64 so we don't need any locks. */
+ /* This is atomic on x86 so we don't need any locks. */
time_t result = ACCESS_ONCE(gtod->wall_time_sec);
if (t)
diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 634a2cf..1261437 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -6,6 +6,24 @@
SECTIONS
{
+#ifdef BUILD_VDSO32
+#include <asm/vdso32.h>
+
+ .hpet_sect : {
+ hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE);
+ } :text :hpet_sect
+
+ .vvar_sect : {
+ vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE);
+
+ /* Place all vvars at the offsets in asm/vvar.h. */
+#define EMIT_VVAR(name, offset) vvar_ ## name = vvar + offset;
+#define __VVAR_KERNEL_LDS
+#include <asm/vvar.h>
+#undef __VVAR_KERNEL_LDS
+#undef EMIT_VVAR
+ } :text :vvar_sect
+#endif
. = VDSO_PRELINK + SIZEOF_HEADERS;
.hash : { *(.hash) } :text
@@ -61,4 +79,8 @@ PHDRS
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
note PT_NOTE FLAGS(4); /* PF_R */
eh_frame_hdr PT_GNU_EH_FRAME;
+#ifdef BUILD_VDSO32
+ vvar_sect PT_NULL FLAGS(4); /* PF_R */
+ hpet_sect PT_NULL FLAGS(4); /* PF_R */
+#endif
}
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index d6bfb87..9b57770 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -25,6 +25,9 @@
#include <asm/tlbflush.h>
#include <asm/vdso.h>
#include <asm/proto.h>
+#include <asm/fixmap.h>
+#include <asm/hpet.h>
+#include <asm/vvar.h>
enum {
VDSO_DISABLED = 0,
@@ -193,7 +196,7 @@ static __init void relocate_vdso(Elf32_Ehdr *ehdr)
}
}
-static struct page *vdso32_pages[1];
+static struct page *vdso32_pages[VDSO_PAGES];
#ifdef CONFIG_X86_64
@@ -310,6 +313,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
unsigned long addr;
int ret = 0;
bool compat;
+ struct vm_area_struct *vma;
#ifdef CONFIG_X86_X32_ABI
if (test_thread_flag(TIF_X32))
@@ -330,11 +334,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
if (compat)
addr = VDSO_HIGH_BASE;
else {
- addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
+ addr = get_unmapped_area(NULL, 0, VDSO_OFFSET(VDSO_PAGES), 0, 0);
if (IS_ERR_VALUE(addr)) {
ret = addr;
goto up_fail;
}
+
+ addr += VDSO_OFFSET(VDSO_PREV_PAGES);
}
current->mm->context.vdso = (void *)addr;
@@ -343,13 +349,48 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
/*
* MAYWRITE to allow gdb to COW and set breakpoints
*/
- ret = install_special_mapping(mm, addr, PAGE_SIZE,
- VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
- vdso32_pages);
+ ret = install_special_mapping(mm,
+ addr,
+ VDSO_OFFSET(VDSO_PAGES - VDSO_PREV_PAGES),
+ VM_READ|VM_EXEC|
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
+ vdso32_pages);
if (ret)
goto up_fail;
+
+ vma = _install_special_mapping(mm,
+ addr - VDSO_OFFSET(VDSO_PREV_PAGES),
+ VDSO_OFFSET(VDSO_PREV_PAGES),
+ VM_READ,
+ NULL);
+
+ if (IS_ERR(vma)) {
+ ret = PTR_ERR(vma);
+ goto up_fail;
+ }
+
+ ret = remap_pfn_range(vma,
+ addr - VDSO_OFFSET(VDSO_VVAR_PAGE),
+ __pa_symbol(&__vvar_page) >> PAGE_SHIFT,
+ PAGE_SIZE,
+ PAGE_READONLY);
+
+ if (ret)
+ goto up_fail;
+
+#ifdef CONFIG_HPET_TIMER
+ if (hpet_address) {
+ ret = io_remap_pfn_range(vma,
+ addr - VDSO_OFFSET(VDSO_HPET_PAGE),
+ hpet_address >> PAGE_SHIFT,
+ PAGE_SIZE,
+ pgprot_noncached(PAGE_READONLY));
+
+ if (ret)
+ goto up_fail;
+ }
+#endif
}
current_thread_info()->sysenter_return =
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
new file mode 100644
index 0000000..ffdbdb1
--- /dev/null
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -0,0 +1,36 @@
+#define BUILD_VDSO32
+
+#ifdef CONFIG_X86_64
+
+/*
+ * Due the -m32 compilation, there will be a lot of
+ * "warning: integer constant is too large for 'unsigned long' type",
+ * because an unsigned long is only 32 bit.
+ */
+
+/*
+ * Prevents the include of arch/x86/include/asm/page.h, which will generate
+ * a lot of warnings.
+ */
+#define _ASM_X86_PAGE_H
+
+/*
+ * The unneeded inline function phys_to_virt() in arch/x86/include/asm/io.h
+ * depends on the __va(), which comes from arch/x86/include/asm/page.h.
+ * So add a dummy for this.
+ *
+ * It is save, since this functions not used in arch/x86/vdso/vclock_gettime.c
+ */
+#define __va(x) 0
+
+/*
+ * The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
+ * "warning: integer constant is too large..."
+ */
+#undef CONFIG_ILLEGAL_POINTER_VALUE
+#define CONFIG_ILLEGAL_POINTER_VALUE 0
+
+#endif
+
+#include "../vclock_gettime.c"
+
diff --git a/arch/x86/vdso/vdso32/vdso32.lds.S b/arch/x86/vdso/vdso32/vdso32.lds.S
index 976124b..bc8bf6d 100644
--- a/arch/x86/vdso/vdso32/vdso32.lds.S
+++ b/arch/x86/vdso/vdso32/vdso32.lds.S
@@ -8,6 +8,9 @@
* values visible using the asm-x86/vdso.h macros from the kernel proper.
*/
+#include <asm/page.h>
+
+#define BUILD_VDSO32
#define VDSO_PRELINK 0
#include "../vdso-layout.lds.S"
@@ -24,6 +27,9 @@ VERSION
__kernel_vsyscall;
__kernel_sigreturn;
__kernel_rt_sigreturn;
+ __vdso_clock_gettime;
+ __vdso_gettimeofday;
+ __vdso_time;
local: *;
};
}
@@ -35,3 +41,6 @@ VDSO32_PRELINK = VDSO_PRELINK;
VDSO32_vsyscall = __kernel_vsyscall;
VDSO32_sigreturn = __kernel_sigreturn;
VDSO32_rt_sigreturn = __kernel_rt_sigreturn;
+VDSO32_clock_gettime = clock_gettime;
+VDSO32_gettimeofday = gettimeofday;
+VDSO32_time = time;
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 32-bit kernel
2014-02-16 21:52 ` [PATCH v18 08/10] Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: feea5bae36ba8fcd7095e1b23cc2c537f4d24562
Gitweb: http://git.kernel.org/tip/feea5bae36ba8fcd7095e1b23cc2c537f4d24562
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:46 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:08:18 -0800
x86, vdso: Add 32-bit VDSO time support for the 32-bit kernel
This patch add the time support for the 32-bit VDSO to the 32 bit
kernel.
For 32-bit programs running on a 32-bit kernel, the same mechanism is
used as for 64-bit programs running on a 64-bit kernel.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-9-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/include/asm/vdso.h | 3 ++
arch/x86/include/asm/vdso32.h | 11 ++++++
arch/x86/vdso/Makefile | 8 ++++
arch/x86/vdso/vclock_gettime.c | 74 ++++++++++++++++++++++++++++++++---
arch/x86/vdso/vdso-layout.lds.S | 22 +++++++++++
arch/x86/vdso/vdso32-setup.c | 53 ++++++++++++++++++++++---
arch/x86/vdso/vdso32/vclock_gettime.c | 35 +++++++++++++++++
arch/x86/vdso/vdso32/vdso32.lds.S | 9 +++++
8 files changed, 203 insertions(+), 12 deletions(-)
diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h
index fddb53d..fe3cef9 100644
--- a/arch/x86/include/asm/vdso.h
+++ b/arch/x86/include/asm/vdso.h
@@ -2,6 +2,9 @@
#define _ASM_X86_VDSO_H
#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+
+#include <asm/vdso32.h>
+
extern const char VDSO32_PRELINK[];
/*
diff --git a/arch/x86/include/asm/vdso32.h b/arch/x86/include/asm/vdso32.h
new file mode 100644
index 0000000..7efb701
--- /dev/null
+++ b/arch/x86/include/asm/vdso32.h
@@ -0,0 +1,11 @@
+#ifndef _ASM_X86_VDSO32_H
+#define _ASM_X86_VDSO32_H
+
+#define VDSO_BASE_PAGE 0
+#define VDSO_VVAR_PAGE 1
+#define VDSO_HPET_PAGE 2
+#define VDSO_PAGES 3
+#define VDSO_PREV_PAGES 2
+#define VDSO_OFFSET(x) ((x) * PAGE_SIZE)
+
+#endif
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index fd14be1..92daaa6 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -145,8 +145,16 @@ KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
$(vdso32-images:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
$(vdso32-images:%=$(obj)/%.dbg): asflags-$(CONFIG_X86_64) += -m32
+KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
+KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=3 -freg-struct-return -fpic
+$(vdso32-images:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
+
$(vdso32-images:%=$(obj)/%.dbg): $(obj)/vdso32-%.so.dbg: FORCE \
$(obj)/vdso32/vdso32.lds \
+ $(obj)/vdso32/vclock_gettime.o \
$(obj)/vdso32/note.o \
$(obj)/vdso32/%.o
$(call if_changed,vdso)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 09dae4a..fcbc974 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -4,6 +4,9 @@
*
* Fast user context implementation of clock_gettime, gettimeofday, and time.
*
+ * 32 Bit compat layer by Stefani Seibold <stefani@seibold.net>
+ * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
+ *
* The code should have no internal unresolved relocations.
* Check with readelf after changing.
*/
@@ -12,13 +15,11 @@
#define DISABLE_BRANCH_PROFILING
#include <linux/kernel.h>
-#include <linux/posix-timers.h>
-#include <linux/time.h>
+#include <uapi/linux/time.h>
#include <linux/string.h>
#include <asm/vsyscall.h>
#include <asm/fixmap.h>
#include <asm/vgtod.h>
-#include <asm/timex.h>
#include <asm/hpet.h>
#include <asm/unistd.h>
#include <asm/io.h>
@@ -26,6 +27,12 @@
#define gtod (&VVAR(vsyscall_gtod_data))
+extern int __vdso_clock_gettime(clockid_t clock, struct timespec *ts);
+extern int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
+extern time_t __vdso_time(time_t *t);
+
+#ifndef BUILD_VDSO32
+
static notrace cycle_t vread_hpet(void)
{
return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
@@ -118,6 +125,59 @@ static notrace cycle_t vread_pvclock(int *mode)
}
#endif
+#else
+
+extern u8 hpet_page
+ __attribute__((visibility("hidden")));
+
+#ifdef CONFIG_HPET_TIMER
+static notrace cycle_t vread_hpet(void)
+{
+ return readl((const void __iomem *)(&hpet_page + HPET_COUNTER));
+}
+#endif
+
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+{
+ long ret;
+
+ asm(
+ "mov %%ebx, %%edx \n"
+ "mov %2, %%ebx \n"
+ "call VDSO32_vsyscall \n"
+ "mov %%edx, %%ebx \n"
+ : "=a" (ret)
+ : "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
+ : "memory", "edx");
+ return ret;
+}
+
+notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
+{
+ long ret;
+
+ asm(
+ "mov %%ebx, %%edx \n"
+ "mov %2, %%ebx \n"
+ "call VDSO32_vsyscall \n"
+ "mov %%edx, %%ebx \n"
+ : "=a" (ret)
+ : "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
+ : "memory", "edx");
+ return ret;
+}
+
+#ifdef CONFIG_PARAVIRT_CLOCK
+
+static notrace cycle_t vread_pvclock(int *mode)
+{
+ *mode = VCLOCK_NONE;
+ return 0;
+}
+#endif
+
+#endif
+
notrace static cycle_t vread_tsc(void)
{
cycle_t ret;
@@ -131,7 +191,7 @@ notrace static cycle_t vread_tsc(void)
* but no one has ever seen it happen.
*/
rdtsc_barrier();
- ret = (cycle_t)vget_cycles();
+ ret = (cycle_t)__native_read_tsc();
last = gtod->clock.cycle_last;
@@ -152,12 +212,14 @@ notrace static cycle_t vread_tsc(void)
notrace static inline u64 vgetsns(int *mode)
{
- long v;
+ u64 v;
cycles_t cycles;
if (gtod->clock.vclock_mode == VCLOCK_TSC)
cycles = vread_tsc();
+#ifdef CONFIG_HPET_TIMER
else if (gtod->clock.vclock_mode == VCLOCK_HPET)
cycles = vread_hpet();
+#endif
#ifdef CONFIG_PARAVIRT_CLOCK
else if (gtod->clock.vclock_mode == VCLOCK_PVCLOCK)
cycles = vread_pvclock(mode);
@@ -284,7 +346,7 @@ int gettimeofday(struct timeval *, struct timezone *)
*/
notrace time_t __vdso_time(time_t *t)
{
- /* This is atomic on x86_64 so we don't need any locks. */
+ /* This is atomic on x86 so we don't need any locks. */
time_t result = ACCESS_ONCE(gtod->wall_time_sec);
if (t)
diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 634a2cf..1261437 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -6,6 +6,24 @@
SECTIONS
{
+#ifdef BUILD_VDSO32
+#include <asm/vdso32.h>
+
+ .hpet_sect : {
+ hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE);
+ } :text :hpet_sect
+
+ .vvar_sect : {
+ vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE);
+
+ /* Place all vvars at the offsets in asm/vvar.h. */
+#define EMIT_VVAR(name, offset) vvar_ ## name = vvar + offset;
+#define __VVAR_KERNEL_LDS
+#include <asm/vvar.h>
+#undef __VVAR_KERNEL_LDS
+#undef EMIT_VVAR
+ } :text :vvar_sect
+#endif
. = VDSO_PRELINK + SIZEOF_HEADERS;
.hash : { *(.hash) } :text
@@ -61,4 +79,8 @@ PHDRS
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
note PT_NOTE FLAGS(4); /* PF_R */
eh_frame_hdr PT_GNU_EH_FRAME;
+#ifdef BUILD_VDSO32
+ vvar_sect PT_NULL FLAGS(4); /* PF_R */
+ hpet_sect PT_NULL FLAGS(4); /* PF_R */
+#endif
}
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index d6bfb87..9b57770 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -25,6 +25,9 @@
#include <asm/tlbflush.h>
#include <asm/vdso.h>
#include <asm/proto.h>
+#include <asm/fixmap.h>
+#include <asm/hpet.h>
+#include <asm/vvar.h>
enum {
VDSO_DISABLED = 0,
@@ -193,7 +196,7 @@ static __init void relocate_vdso(Elf32_Ehdr *ehdr)
}
}
-static struct page *vdso32_pages[1];
+static struct page *vdso32_pages[VDSO_PAGES];
#ifdef CONFIG_X86_64
@@ -310,6 +313,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
unsigned long addr;
int ret = 0;
bool compat;
+ struct vm_area_struct *vma;
#ifdef CONFIG_X86_X32_ABI
if (test_thread_flag(TIF_X32))
@@ -330,11 +334,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
if (compat)
addr = VDSO_HIGH_BASE;
else {
- addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
+ addr = get_unmapped_area(NULL, 0, VDSO_OFFSET(VDSO_PAGES), 0, 0);
if (IS_ERR_VALUE(addr)) {
ret = addr;
goto up_fail;
}
+
+ addr += VDSO_OFFSET(VDSO_PREV_PAGES);
}
current->mm->context.vdso = (void *)addr;
@@ -343,13 +349,48 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
/*
* MAYWRITE to allow gdb to COW and set breakpoints
*/
- ret = install_special_mapping(mm, addr, PAGE_SIZE,
- VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
- vdso32_pages);
+ ret = install_special_mapping(mm,
+ addr,
+ VDSO_OFFSET(VDSO_PAGES - VDSO_PREV_PAGES),
+ VM_READ|VM_EXEC|
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
+ vdso32_pages);
if (ret)
goto up_fail;
+
+ vma = _install_special_mapping(mm,
+ addr - VDSO_OFFSET(VDSO_PREV_PAGES),
+ VDSO_OFFSET(VDSO_PREV_PAGES),
+ VM_READ,
+ NULL);
+
+ if (IS_ERR(vma)) {
+ ret = PTR_ERR(vma);
+ goto up_fail;
+ }
+
+ ret = remap_pfn_range(vma,
+ addr - VDSO_OFFSET(VDSO_VVAR_PAGE),
+ __pa_symbol(&__vvar_page) >> PAGE_SHIFT,
+ PAGE_SIZE,
+ PAGE_READONLY);
+
+ if (ret)
+ goto up_fail;
+
+#ifdef CONFIG_HPET_TIMER
+ if (hpet_address) {
+ ret = io_remap_pfn_range(vma,
+ addr - VDSO_OFFSET(VDSO_HPET_PAGE),
+ hpet_address >> PAGE_SHIFT,
+ PAGE_SIZE,
+ pgprot_noncached(PAGE_READONLY));
+
+ if (ret)
+ goto up_fail;
+ }
+#endif
}
current_thread_info()->sysenter_return =
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
new file mode 100644
index 0000000..1034dea
--- /dev/null
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -0,0 +1,35 @@
+#define BUILD_VDSO32
+
+#ifdef CONFIG_X86_64
+
+/*
+ * Due the -m32 compilation, there will be a lot of
+ * "warning: integer constant is too large for 'unsigned long' type",
+ * because an unsigned long is only 32 bit.
+ */
+
+/*
+ * Prevents the include of arch/x86/include/asm/page.h, which will generate
+ * a lot of warnings.
+ */
+#define _ASM_X86_PAGE_H
+
+/*
+ * The unneeded inline function phys_to_virt() in arch/x86/include/asm/io.h
+ * depends on the __va(), which comes from arch/x86/include/asm/page.h.
+ * So add a dummy for this.
+ *
+ * It is save, since this functions not used in arch/x86/vdso/vclock_gettime.c
+ */
+#define __va(x) 0
+
+/*
+ * The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
+ * "warning: integer constant is too large..."
+ */
+#undef CONFIG_ILLEGAL_POINTER_VALUE
+#define CONFIG_ILLEGAL_POINTER_VALUE 0
+
+#endif
+
+#include "../vclock_gettime.c"
diff --git a/arch/x86/vdso/vdso32/vdso32.lds.S b/arch/x86/vdso/vdso32/vdso32.lds.S
index 976124b..bc8bf6d 100644
--- a/arch/x86/vdso/vdso32/vdso32.lds.S
+++ b/arch/x86/vdso/vdso32/vdso32.lds.S
@@ -8,6 +8,9 @@
* values visible using the asm-x86/vdso.h macros from the kernel proper.
*/
+#include <asm/page.h>
+
+#define BUILD_VDSO32
#define VDSO_PRELINK 0
#include "../vdso-layout.lds.S"
@@ -24,6 +27,9 @@ VERSION
__kernel_vsyscall;
__kernel_sigreturn;
__kernel_rt_sigreturn;
+ __vdso_clock_gettime;
+ __vdso_gettimeofday;
+ __vdso_time;
local: *;
};
}
@@ -35,3 +41,6 @@ VDSO32_PRELINK = VDSO_PRELINK;
VDSO32_vsyscall = __kernel_vsyscall;
VDSO32_sigreturn = __kernel_sigreturn;
VDSO32_rt_sigreturn = __kernel_rt_sigreturn;
+VDSO32_clock_gettime = clock_gettime;
+VDSO32_gettimeofday = gettimeofday;
+VDSO32_time = time;
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel
2014-02-16 21:52 [PATCH v18 0/10] Add 32 bit VDSO time function support Stefani Seibold
` (7 preceding siblings ...)
2014-02-16 21:52 ` [PATCH v18 08/10] Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
@ 2014-02-16 21:52 ` Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 64-bit kernel tip-bot for Stefani Seibold
` (2 more replies)
8 siblings, 3 replies; 31+ messages in thread
From: Stefani Seibold @ 2014-02-16 21:52 UTC (permalink / raw)
To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
john.stultz, luto, xemul, gorcunov, andriy.shevchenko
Cc: Martin.Runge, Andreas.Brief, Stefani Seibold
This patch add the VDSO time support for the IA32 Emulation Layer.
Due the nature of the kernel headers and the LP64 compiler where the
size of a long and a pointer differs against a 32 bit compiler, there
is some type hacking necessary for optimal performance.
The vsyscall_gtod_data struture must be a rearranged to serve 32- and
64-bit code access at the same time:
- The seqcount_t was replaced by an unsigned, this makes the
vsyscall_gtod_data intedepend of kernel configuration and internal functions.
- All kernel internal structures are replaced by fix size elements
which works for 32- and 64-bit access
- The inner struct clock was removed to pack the whole struct.
The "unsigned seq" would be handled by functions derivated from seqcount_t.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
arch/x86/include/asm/vgtod.h | 69 ++++++++++++++++++++++++++++-------
arch/x86/include/asm/vvar.h | 5 +++
arch/x86/kernel/vsyscall_gtod.c | 33 +++++++++++------
arch/x86/vdso/vclock_gettime.c | 68 +++++++++++++++++-----------------
arch/x86/vdso/vdso32/vclock_gettime.c | 33 +++++++++++++++++
5 files changed, 148 insertions(+), 60 deletions(-)
diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h
index 46e24d3..abb9e45 100644
--- a/arch/x86/include/asm/vgtod.h
+++ b/arch/x86/include/asm/vgtod.h
@@ -4,27 +4,70 @@
#include <asm/vsyscall.h>
#include <linux/clocksource.h>
+#ifdef CONFIG_X86_64
+typedef u64 gtod_long_t;
+#else
+typedef u32 gtod_long_t;
+#endif
+/*
+ * vsyscall_gtod_data will be accessed by 32 and 64 bit code at the same time
+ * so be carefull by modifying this structure.
+ */
struct vsyscall_gtod_data {
- seqcount_t seq;
+ unsigned seq;
- struct { /* extract of a clocksource struct */
- int vclock_mode;
- cycle_t cycle_last;
- cycle_t mask;
- u32 mult;
- u32 shift;
- } clock;
+ int vclock_mode;
+ cycle_t cycle_last;
+ cycle_t mask;
+ u32 mult;
+ u32 shift;
/* open coded 'struct timespec' */
- time_t wall_time_sec;
u64 wall_time_snsec;
+ gtod_long_t wall_time_sec;
+ gtod_long_t monotonic_time_sec;
u64 monotonic_time_snsec;
- time_t monotonic_time_sec;
+ gtod_long_t wall_time_coarse_sec;
+ gtod_long_t wall_time_coarse_nsec;
+ gtod_long_t monotonic_time_coarse_sec;
+ gtod_long_t monotonic_time_coarse_nsec;
- struct timezone sys_tz;
- struct timespec wall_time_coarse;
- struct timespec monotonic_time_coarse;
+ int tz_minuteswest;
+ int tz_dsttime;
};
extern struct vsyscall_gtod_data vsyscall_gtod_data;
+static inline unsigned gtod_read_begin(const struct vsyscall_gtod_data *s)
+{
+ unsigned ret;
+
+repeat:
+ ret = ACCESS_ONCE(s->seq);
+ if (unlikely(ret & 1)) {
+ cpu_relax();
+ goto repeat;
+ }
+ smp_rmb();
+ return ret;
+}
+
+static inline int gtod_read_retry(const struct vsyscall_gtod_data *s,
+ unsigned start)
+{
+ smp_rmb();
+ return unlikely(s->seq != start);
+}
+
+static inline void gtod_write_begin(struct vsyscall_gtod_data *s)
+{
+ ++s->seq;
+ smp_wmb();
+}
+
+static inline void gtod_write_end(struct vsyscall_gtod_data *s)
+{
+ smp_wmb();
+ ++s->seq;
+}
+
#endif /* _ASM_X86_VGTOD_H */
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index 52c79ff..081d909 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -16,6 +16,9 @@
* you mess up, the linker will catch it.)
*/
+#ifndef _ASM_X86_VVAR_H
+#define _ASM_X86_VVAR_H
+
#if defined(__VVAR_KERNEL_LDS)
/* The kernel linker script defines its own magic to put vvars in the
@@ -64,3 +67,5 @@ DECLARE_VVAR(16, int, vgetcpu_mode)
DECLARE_VVAR(128, struct vsyscall_gtod_data, vsyscall_gtod_data)
#undef DECLARE_VVAR
+
+#endif
diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c
index 91862a4..973dcc4 100644
--- a/arch/x86/kernel/vsyscall_gtod.c
+++ b/arch/x86/kernel/vsyscall_gtod.c
@@ -4,6 +4,7 @@
*
* Modified for x86 32 bit architecture by
* Stefani Seibold <stefani@seibold.net>
+ * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
*
* Thanks to hpa@transmeta.com for some useful hint.
* Special thanks to Ingo Molnar for his early experience with
@@ -18,21 +19,22 @@ DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
void update_vsyscall_tz(void)
{
- vsyscall_gtod_data.sys_tz = sys_tz;
+ vsyscall_gtod_data.tz_minuteswest = sys_tz.tz_minuteswest;
+ vsyscall_gtod_data.tz_dsttime = sys_tz.tz_dsttime;
}
void update_vsyscall(struct timekeeper *tk)
{
struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
- write_seqcount_begin(&vdata->seq);
+ gtod_write_begin(vdata);
/* copy vsyscall data */
- vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
- vdata->clock.cycle_last = tk->clock->cycle_last;
- vdata->clock.mask = tk->clock->mask;
- vdata->clock.mult = tk->mult;
- vdata->clock.shift = tk->shift;
+ vdata->vclock_mode = tk->clock->archdata.vclock_mode;
+ vdata->cycle_last = tk->clock->cycle_last;
+ vdata->mask = tk->clock->mask;
+ vdata->mult = tk->mult;
+ vdata->shift = tk->shift;
vdata->wall_time_sec = tk->xtime_sec;
vdata->wall_time_snsec = tk->xtime_nsec;
@@ -49,12 +51,19 @@ void update_vsyscall(struct timekeeper *tk)
vdata->monotonic_time_sec++;
}
- vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
- vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
+ vdata->wall_time_coarse_sec = tk->xtime_sec;
+ vdata->wall_time_coarse_nsec = (long)(tk->xtime_nsec >> tk->shift);
- vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
- tk->wall_to_monotonic);
+ vdata->monotonic_time_coarse_sec =
+ vdata->wall_time_coarse_sec + tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_coarse_nsec =
+ vdata->wall_time_coarse_nsec + tk->wall_to_monotonic.tv_nsec;
- write_seqcount_end(&vdata->seq);
+ while (vdata->monotonic_time_coarse_nsec >= NSEC_PER_SEC) {
+ vdata->monotonic_time_coarse_nsec -= NSEC_PER_SEC;
+ vdata->monotonic_time_coarse_sec++;
+ }
+
+ gtod_write_end(vdata);
}
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index fcbc974..b2c5d39 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -116,7 +116,7 @@ static notrace cycle_t vread_pvclock(int *mode)
*mode = VCLOCK_NONE;
/* refer to tsc.c read_tsc() comment for rationale */
- last = gtod->clock.cycle_last;
+ last = gtod->cycle_last;
if (likely(ret >= last))
return ret;
@@ -147,7 +147,7 @@ notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
"call VDSO32_vsyscall \n"
"mov %%edx, %%ebx \n"
: "=a" (ret)
- : "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
+ : "0" (__NR_ia32_clock_gettime), "g" (clock), "c" (ts)
: "memory", "edx");
return ret;
}
@@ -162,7 +162,7 @@ notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
"call VDSO32_vsyscall \n"
"mov %%edx, %%ebx \n"
: "=a" (ret)
- : "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
+ : "0" (__NR_ia32_gettimeofday), "g" (tv), "c" (tz)
: "memory", "edx");
return ret;
}
@@ -193,7 +193,7 @@ notrace static cycle_t vread_tsc(void)
rdtsc_barrier();
ret = (cycle_t)__native_read_tsc();
- last = gtod->clock.cycle_last;
+ last = gtod->cycle_last;
if (likely(ret >= last))
return ret;
@@ -214,20 +214,20 @@ notrace static inline u64 vgetsns(int *mode)
{
u64 v;
cycles_t cycles;
- if (gtod->clock.vclock_mode == VCLOCK_TSC)
+ if (gtod->vclock_mode == VCLOCK_TSC)
cycles = vread_tsc();
#ifdef CONFIG_HPET_TIMER
- else if (gtod->clock.vclock_mode == VCLOCK_HPET)
+ else if (gtod->vclock_mode == VCLOCK_HPET)
cycles = vread_hpet();
#endif
#ifdef CONFIG_PARAVIRT_CLOCK
- else if (gtod->clock.vclock_mode == VCLOCK_PVCLOCK)
+ else if (gtod->vclock_mode == VCLOCK_PVCLOCK)
cycles = vread_pvclock(mode);
#endif
else
return 0;
- v = (cycles - gtod->clock.cycle_last) & gtod->clock.mask;
- return v * gtod->clock.mult;
+ v = (cycles - gtod->cycle_last) & gtod->mask;
+ return v * gtod->mult;
}
/* Code size doesn't matter (vdso is 4k anyway) and this is faster. */
@@ -237,17 +237,18 @@ notrace static int __always_inline do_realtime(struct timespec *ts)
u64 ns;
int mode;
- ts->tv_nsec = 0;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- mode = gtod->clock.vclock_mode;
+ seq = gtod_read_begin(gtod);
+ mode = gtod->vclock_mode;
ts->tv_sec = gtod->wall_time_sec;
ns = gtod->wall_time_snsec;
ns += vgetsns(&mode);
- ns >>= gtod->clock.shift;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ ns >>= gtod->shift;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
+
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
- timespec_add_ns(ts, ns);
return mode;
}
@@ -257,16 +258,17 @@ notrace static int do_monotonic(struct timespec *ts)
u64 ns;
int mode;
- ts->tv_nsec = 0;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- mode = gtod->clock.vclock_mode;
+ seq = gtod_read_begin(gtod);
+ mode = gtod->vclock_mode;
ts->tv_sec = gtod->monotonic_time_sec;
ns = gtod->monotonic_time_snsec;
ns += vgetsns(&mode);
- ns >>= gtod->clock.shift;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
- timespec_add_ns(ts, ns);
+ ns >>= gtod->shift;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
+
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
return mode;
}
@@ -275,20 +277,20 @@ notrace static void do_realtime_coarse(struct timespec *ts)
{
unsigned long seq;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- ts->tv_sec = gtod->wall_time_coarse.tv_sec;
- ts->tv_nsec = gtod->wall_time_coarse.tv_nsec;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ seq = gtod_read_begin(gtod);
+ ts->tv_sec = gtod->wall_time_coarse_sec;
+ ts->tv_nsec = gtod->wall_time_coarse_nsec;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
}
notrace static void do_monotonic_coarse(struct timespec *ts)
{
unsigned long seq;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- ts->tv_sec = gtod->monotonic_time_coarse.tv_sec;
- ts->tv_nsec = gtod->monotonic_time_coarse.tv_nsec;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ seq = gtod_read_begin(gtod);
+ ts->tv_sec = gtod->monotonic_time_coarse_sec;
+ ts->tv_nsec = gtod->monotonic_time_coarse_nsec;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
}
notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
@@ -322,17 +324,13 @@ int clock_gettime(clockid_t, struct timespec *)
notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
{
if (likely(tv != NULL)) {
- BUILD_BUG_ON(offsetof(struct timeval, tv_usec) !=
- offsetof(struct timespec, tv_nsec) ||
- sizeof(*tv) != sizeof(struct timespec));
if (unlikely(do_realtime((struct timespec *)tv) == VCLOCK_NONE))
return vdso_fallback_gtod(tv, tz);
tv->tv_usec /= 1000;
}
if (unlikely(tz != NULL)) {
- /* Avoid memcpy. Some old compilers fail to inline it */
- tz->tz_minuteswest = gtod->sys_tz.tz_minuteswest;
- tz->tz_dsttime = gtod->sys_tz.tz_dsttime;
+ tz->tz_minuteswest = gtod->tz_minuteswest;
+ tz->tz_dsttime = gtod->tz_dsttime;
}
return 0;
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
index ffdbdb1..a578e44 100644
--- a/arch/x86/vdso/vdso32/vclock_gettime.c
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -2,6 +2,8 @@
#ifdef CONFIG_X86_64
+#include <asm/unistd_32_ia32.h>
+
/*
* Due the -m32 compilation, there will be a lot of
* "warning: integer constant is too large for 'unsigned long' type",
@@ -24,12 +26,43 @@
#define __va(x) 0
/*
+ * function load_cr3() in x86/include/asm/processor.h depends on __pa().
+ * Replace by a dummy is save since not used
+ */
+#define __pa(x) 0
+
+/*
+ * Prevents the include of arch/x86/include/asm/spinlock.h, which will generate
+ * a lot of warnings with make C=1.
+ * It is imposible not to include spinlock.h since most kernel headers does
+ * include it.
+ */
+#define _ASM_X86_SPINLOCK_H
+
+/*
+ * dummys for unneeded arck_spin functions
+ */
+static inline void arch_spin_unlock_wait(void *p)
+{
+}
+
+static inline int arch_spin_is_locked(void *p)
+{
+ return 0;
+}
+
+/*
* The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
* "warning: integer constant is too large..."
*/
#undef CONFIG_ILLEGAL_POINTER_VALUE
#define CONFIG_ILLEGAL_POINTER_VALUE 0
+#else
+
+#define __NR_ia32_clock_gettime __NR_clock_gettime
+#define __NR_ia32_gettimeofday __NR_gettimeofday
+
#endif
#include "../vclock_gettime.c"
--
1.8.5.5
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 64-bit kernel
2014-02-16 21:52 ` [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel Stefani Seibold
@ 2014-02-17 0:53 ` tip-bot for Stefani Seibold
2014-02-17 0:54 ` [tip:x86/vdso] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c tip-bot for H. Peter Anvin
2014-02-17 3:51 ` [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h> tip-bot for H. Peter Anvin
2 siblings, 0 replies; 31+ messages in thread
From: tip-bot for Stefani Seibold @ 2014-02-17 0:53 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 249adfe2c86766eaa739d342525e55a96bf9efa7
Gitweb: http://git.kernel.org/tip/249adfe2c86766eaa739d342525e55a96bf9efa7
Author: Stefani Seibold <stefani@seibold.net>
AuthorDate: Sun, 16 Feb 2014 22:52:47 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 15:08:29 -0800
x86, vdso: Add 32-bit VDSO time support for the 64-bit kernel
This patch add the VDSO time support for the IA32 Emulation Layer.
Due the nature of the kernel headers and the LP64 compiler where the
size of a long and a pointer differs against a 32 bit compiler, there
is some type hacking necessary for optimal performance.
The vsyscall_gtod_data struture must be a rearranged to serve 32- and
64-bit code access at the same time:
- The seqcount_t was replaced by an unsigned, this makes the
vsyscall_gtod_data intedepend of kernel configuration and internal functions.
- All kernel internal structures are replaced by fix size elements
which works for 32- and 64-bit access
- The inner struct clock was removed to pack the whole struct.
The "unsigned seq" would be handled by functions derivated from seqcount_t.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-10-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/include/asm/vgtod.h | 69 ++++++++++++++++++++++++++++-------
arch/x86/include/asm/vvar.h | 5 +++
arch/x86/kernel/vsyscall_gtod.c | 34 +++++++++++------
arch/x86/vdso/vclock_gettime.c | 68 +++++++++++++++++-----------------
arch/x86/vdso/vdso32/vclock_gettime.c | 33 +++++++++++++++++
5 files changed, 149 insertions(+), 60 deletions(-)
diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h
index 46e24d3..abb9e45 100644
--- a/arch/x86/include/asm/vgtod.h
+++ b/arch/x86/include/asm/vgtod.h
@@ -4,27 +4,70 @@
#include <asm/vsyscall.h>
#include <linux/clocksource.h>
+#ifdef CONFIG_X86_64
+typedef u64 gtod_long_t;
+#else
+typedef u32 gtod_long_t;
+#endif
+/*
+ * vsyscall_gtod_data will be accessed by 32 and 64 bit code at the same time
+ * so be carefull by modifying this structure.
+ */
struct vsyscall_gtod_data {
- seqcount_t seq;
+ unsigned seq;
- struct { /* extract of a clocksource struct */
- int vclock_mode;
- cycle_t cycle_last;
- cycle_t mask;
- u32 mult;
- u32 shift;
- } clock;
+ int vclock_mode;
+ cycle_t cycle_last;
+ cycle_t mask;
+ u32 mult;
+ u32 shift;
/* open coded 'struct timespec' */
- time_t wall_time_sec;
u64 wall_time_snsec;
+ gtod_long_t wall_time_sec;
+ gtod_long_t monotonic_time_sec;
u64 monotonic_time_snsec;
- time_t monotonic_time_sec;
+ gtod_long_t wall_time_coarse_sec;
+ gtod_long_t wall_time_coarse_nsec;
+ gtod_long_t monotonic_time_coarse_sec;
+ gtod_long_t monotonic_time_coarse_nsec;
- struct timezone sys_tz;
- struct timespec wall_time_coarse;
- struct timespec monotonic_time_coarse;
+ int tz_minuteswest;
+ int tz_dsttime;
};
extern struct vsyscall_gtod_data vsyscall_gtod_data;
+static inline unsigned gtod_read_begin(const struct vsyscall_gtod_data *s)
+{
+ unsigned ret;
+
+repeat:
+ ret = ACCESS_ONCE(s->seq);
+ if (unlikely(ret & 1)) {
+ cpu_relax();
+ goto repeat;
+ }
+ smp_rmb();
+ return ret;
+}
+
+static inline int gtod_read_retry(const struct vsyscall_gtod_data *s,
+ unsigned start)
+{
+ smp_rmb();
+ return unlikely(s->seq != start);
+}
+
+static inline void gtod_write_begin(struct vsyscall_gtod_data *s)
+{
+ ++s->seq;
+ smp_wmb();
+}
+
+static inline void gtod_write_end(struct vsyscall_gtod_data *s)
+{
+ smp_wmb();
+ ++s->seq;
+}
+
#endif /* _ASM_X86_VGTOD_H */
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
index 52c79ff..081d909 100644
--- a/arch/x86/include/asm/vvar.h
+++ b/arch/x86/include/asm/vvar.h
@@ -16,6 +16,9 @@
* you mess up, the linker will catch it.)
*/
+#ifndef _ASM_X86_VVAR_H
+#define _ASM_X86_VVAR_H
+
#if defined(__VVAR_KERNEL_LDS)
/* The kernel linker script defines its own magic to put vvars in the
@@ -64,3 +67,5 @@ DECLARE_VVAR(16, int, vgetcpu_mode)
DECLARE_VVAR(128, struct vsyscall_gtod_data, vsyscall_gtod_data)
#undef DECLARE_VVAR
+
+#endif
diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c
index b5a943d..973dcc4 100644
--- a/arch/x86/kernel/vsyscall_gtod.c
+++ b/arch/x86/kernel/vsyscall_gtod.c
@@ -4,6 +4,7 @@
*
* Modified for x86 32 bit architecture by
* Stefani Seibold <stefani@seibold.net>
+ * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
*
* Thanks to hpa@transmeta.com for some useful hint.
* Special thanks to Ingo Molnar for his early experience with
@@ -18,21 +19,22 @@ DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data);
void update_vsyscall_tz(void)
{
- vsyscall_gtod_data.sys_tz = sys_tz;
+ vsyscall_gtod_data.tz_minuteswest = sys_tz.tz_minuteswest;
+ vsyscall_gtod_data.tz_dsttime = sys_tz.tz_dsttime;
}
void update_vsyscall(struct timekeeper *tk)
{
struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data;
- write_seqcount_begin(&vdata->seq);
+ gtod_write_begin(vdata);
/* copy vsyscall data */
- vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode;
- vdata->clock.cycle_last = tk->clock->cycle_last;
- vdata->clock.mask = tk->clock->mask;
- vdata->clock.mult = tk->mult;
- vdata->clock.shift = tk->shift;
+ vdata->vclock_mode = tk->clock->archdata.vclock_mode;
+ vdata->cycle_last = tk->clock->cycle_last;
+ vdata->mask = tk->clock->mask;
+ vdata->mult = tk->mult;
+ vdata->shift = tk->shift;
vdata->wall_time_sec = tk->xtime_sec;
vdata->wall_time_snsec = tk->xtime_nsec;
@@ -49,11 +51,19 @@ void update_vsyscall(struct timekeeper *tk)
vdata->monotonic_time_sec++;
}
- vdata->wall_time_coarse.tv_sec = tk->xtime_sec;
- vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift);
+ vdata->wall_time_coarse_sec = tk->xtime_sec;
+ vdata->wall_time_coarse_nsec = (long)(tk->xtime_nsec >> tk->shift);
- vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse,
- tk->wall_to_monotonic);
+ vdata->monotonic_time_coarse_sec =
+ vdata->wall_time_coarse_sec + tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_coarse_nsec =
+ vdata->wall_time_coarse_nsec + tk->wall_to_monotonic.tv_nsec;
- write_seqcount_end(&vdata->seq);
+ while (vdata->monotonic_time_coarse_nsec >= NSEC_PER_SEC) {
+ vdata->monotonic_time_coarse_nsec -= NSEC_PER_SEC;
+ vdata->monotonic_time_coarse_sec++;
+ }
+
+ gtod_write_end(vdata);
}
+
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index fcbc974..b2c5d39 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -116,7 +116,7 @@ static notrace cycle_t vread_pvclock(int *mode)
*mode = VCLOCK_NONE;
/* refer to tsc.c read_tsc() comment for rationale */
- last = gtod->clock.cycle_last;
+ last = gtod->cycle_last;
if (likely(ret >= last))
return ret;
@@ -147,7 +147,7 @@ notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
"call VDSO32_vsyscall \n"
"mov %%edx, %%ebx \n"
: "=a" (ret)
- : "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
+ : "0" (__NR_ia32_clock_gettime), "g" (clock), "c" (ts)
: "memory", "edx");
return ret;
}
@@ -162,7 +162,7 @@ notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
"call VDSO32_vsyscall \n"
"mov %%edx, %%ebx \n"
: "=a" (ret)
- : "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
+ : "0" (__NR_ia32_gettimeofday), "g" (tv), "c" (tz)
: "memory", "edx");
return ret;
}
@@ -193,7 +193,7 @@ notrace static cycle_t vread_tsc(void)
rdtsc_barrier();
ret = (cycle_t)__native_read_tsc();
- last = gtod->clock.cycle_last;
+ last = gtod->cycle_last;
if (likely(ret >= last))
return ret;
@@ -214,20 +214,20 @@ notrace static inline u64 vgetsns(int *mode)
{
u64 v;
cycles_t cycles;
- if (gtod->clock.vclock_mode == VCLOCK_TSC)
+ if (gtod->vclock_mode == VCLOCK_TSC)
cycles = vread_tsc();
#ifdef CONFIG_HPET_TIMER
- else if (gtod->clock.vclock_mode == VCLOCK_HPET)
+ else if (gtod->vclock_mode == VCLOCK_HPET)
cycles = vread_hpet();
#endif
#ifdef CONFIG_PARAVIRT_CLOCK
- else if (gtod->clock.vclock_mode == VCLOCK_PVCLOCK)
+ else if (gtod->vclock_mode == VCLOCK_PVCLOCK)
cycles = vread_pvclock(mode);
#endif
else
return 0;
- v = (cycles - gtod->clock.cycle_last) & gtod->clock.mask;
- return v * gtod->clock.mult;
+ v = (cycles - gtod->cycle_last) & gtod->mask;
+ return v * gtod->mult;
}
/* Code size doesn't matter (vdso is 4k anyway) and this is faster. */
@@ -237,17 +237,18 @@ notrace static int __always_inline do_realtime(struct timespec *ts)
u64 ns;
int mode;
- ts->tv_nsec = 0;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- mode = gtod->clock.vclock_mode;
+ seq = gtod_read_begin(gtod);
+ mode = gtod->vclock_mode;
ts->tv_sec = gtod->wall_time_sec;
ns = gtod->wall_time_snsec;
ns += vgetsns(&mode);
- ns >>= gtod->clock.shift;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ ns >>= gtod->shift;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
+
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
- timespec_add_ns(ts, ns);
return mode;
}
@@ -257,16 +258,17 @@ notrace static int do_monotonic(struct timespec *ts)
u64 ns;
int mode;
- ts->tv_nsec = 0;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- mode = gtod->clock.vclock_mode;
+ seq = gtod_read_begin(gtod);
+ mode = gtod->vclock_mode;
ts->tv_sec = gtod->monotonic_time_sec;
ns = gtod->monotonic_time_snsec;
ns += vgetsns(&mode);
- ns >>= gtod->clock.shift;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
- timespec_add_ns(ts, ns);
+ ns >>= gtod->shift;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
+
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
return mode;
}
@@ -275,20 +277,20 @@ notrace static void do_realtime_coarse(struct timespec *ts)
{
unsigned long seq;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- ts->tv_sec = gtod->wall_time_coarse.tv_sec;
- ts->tv_nsec = gtod->wall_time_coarse.tv_nsec;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ seq = gtod_read_begin(gtod);
+ ts->tv_sec = gtod->wall_time_coarse_sec;
+ ts->tv_nsec = gtod->wall_time_coarse_nsec;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
}
notrace static void do_monotonic_coarse(struct timespec *ts)
{
unsigned long seq;
do {
- seq = raw_read_seqcount_begin(>od->seq);
- ts->tv_sec = gtod->monotonic_time_coarse.tv_sec;
- ts->tv_nsec = gtod->monotonic_time_coarse.tv_nsec;
- } while (unlikely(read_seqcount_retry(>od->seq, seq)));
+ seq = gtod_read_begin(gtod);
+ ts->tv_sec = gtod->monotonic_time_coarse_sec;
+ ts->tv_nsec = gtod->monotonic_time_coarse_nsec;
+ } while (unlikely(gtod_read_retry(gtod, seq)));
}
notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
@@ -322,17 +324,13 @@ int clock_gettime(clockid_t, struct timespec *)
notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
{
if (likely(tv != NULL)) {
- BUILD_BUG_ON(offsetof(struct timeval, tv_usec) !=
- offsetof(struct timespec, tv_nsec) ||
- sizeof(*tv) != sizeof(struct timespec));
if (unlikely(do_realtime((struct timespec *)tv) == VCLOCK_NONE))
return vdso_fallback_gtod(tv, tz);
tv->tv_usec /= 1000;
}
if (unlikely(tz != NULL)) {
- /* Avoid memcpy. Some old compilers fail to inline it */
- tz->tz_minuteswest = gtod->sys_tz.tz_minuteswest;
- tz->tz_dsttime = gtod->sys_tz.tz_dsttime;
+ tz->tz_minuteswest = gtod->tz_minuteswest;
+ tz->tz_dsttime = gtod->tz_dsttime;
}
return 0;
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
index 1034dea..5de5057 100644
--- a/arch/x86/vdso/vdso32/vclock_gettime.c
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -2,6 +2,8 @@
#ifdef CONFIG_X86_64
+#include <asm/unistd_32_ia32.h>
+
/*
* Due the -m32 compilation, there will be a lot of
* "warning: integer constant is too large for 'unsigned long' type",
@@ -24,12 +26,43 @@
#define __va(x) 0
/*
+ * function load_cr3() in x86/include/asm/processor.h depends on __pa().
+ * Replace by a dummy is save since not used
+ */
+#define __pa(x) 0
+
+/*
+ * Prevents the include of arch/x86/include/asm/spinlock.h, which will generate
+ * a lot of warnings with make C=1.
+ * It is imposible not to include spinlock.h since most kernel headers does
+ * include it.
+ */
+#define _ASM_X86_SPINLOCK_H
+
+/*
+ * dummys for unneeded arck_spin functions
+ */
+static inline void arch_spin_unlock_wait(void *p)
+{
+}
+
+static inline int arch_spin_is_locked(void *p)
+{
+ return 0;
+}
+
+/*
* The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
* "warning: integer constant is too large..."
*/
#undef CONFIG_ILLEGAL_POINTER_VALUE
#define CONFIG_ILLEGAL_POINTER_VALUE 0
+#else
+
+#define __NR_ia32_clock_gettime __NR_clock_gettime
+#define __NR_ia32_gettimeofday __NR_gettimeofday
+
#endif
#include "../vclock_gettime.c"
^ permalink raw reply [flat|nested] 31+ messages in thread* [tip:x86/vdso] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
2014-02-16 21:52 ` [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 64-bit kernel tip-bot for Stefani Seibold
@ 2014-02-17 0:54 ` tip-bot for H. Peter Anvin
2014-02-17 1:48 ` H. Peter Anvin
2014-02-17 3:51 ` [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h> tip-bot for H. Peter Anvin
2 siblings, 1 reply; 31+ messages in thread
From: tip-bot for H. Peter Anvin @ 2014-02-17 0:54 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: 4b5e4f908855a66f0957bf35137ce3ee37c05230
Gitweb: http://git.kernel.org/tip/4b5e4f908855a66f0957bf35137ce3ee37c05230
Author: H. Peter Anvin <hpa@linux.intel.com>
AuthorDate: Sun, 16 Feb 2014 16:44:25 -0800
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 16:44:25 -0800
x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
We need a lot more dummy locking functions to build in all possible
configurations.
Cc: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-10-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vdso32/vclock_gettime.c | 58 +++++++++++++++++++++++++++++++++--
1 file changed, 55 insertions(+), 3 deletions(-)
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
index 5de5057..56465ad 100644
--- a/arch/x86/vdso/vdso32/vclock_gettime.c
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -40,17 +40,69 @@
#define _ASM_X86_SPINLOCK_H
/*
- * dummys for unneeded arck_spin functions
+ * dummys for unneeded arch_spin functions
*/
-static inline void arch_spin_unlock_wait(void *p)
+static inline void arch_spin_lock(void *lock)
{
}
-static inline int arch_spin_is_locked(void *p)
+static inline int arch_spin_trylock(void *lock)
{
return 0;
}
+static inline void arch_spin_unlock(void *lock)
+{
+}
+
+static inline void arch_spin_lock_flags(void *lock,
+ unsigned long flags)
+{
+}
+
+static inline void arch_spin_unlock_wait(void *lock)
+{
+}
+
+static inline int arch_spin_is_locked(void *lock)
+{
+ return 0;
+}
+
+static inline int arch_read_trylock(void *lock)
+{
+ return 0;
+}
+
+static inline int arch_write_trylock(void *lock)
+{
+ return 0;
+}
+
+static inline void arch_read_lock(void *rw)
+{
+}
+
+static inline void arch_write_lock(void *rw)
+{
+}
+
+static inline void arch_read_lock_flags(void *rw, unsigned long flags)
+{
+}
+
+static inline void arch_write_lock_flags(void *rw, unsigned long flags)
+{
+}
+
+static inline void arch_read_unlock(void *rw)
+{
+}
+
+static inline void arch_write_unlock(void *rw)
+{
+}
+
/*
* The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
* "warning: integer constant is too large..."
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [tip:x86/vdso] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
2014-02-17 0:54 ` [tip:x86/vdso] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c tip-bot for H. Peter Anvin
@ 2014-02-17 1:48 ` H. Peter Anvin
0 siblings, 0 replies; 31+ messages in thread
From: H. Peter Anvin @ 2014-02-17 1:48 UTC (permalink / raw)
To: mingo, hpa, linux-kernel, stefani, tglx, linux-tip-commits
[-- Attachment #1: Type: text/plain, Size: 641 bytes --]
On 02/16/2014 04:54 PM, tip-bot for H. Peter Anvin wrote:
> Commit-ID: 4b5e4f908855a66f0957bf35137ce3ee37c05230
> Gitweb: http://git.kernel.org/tip/4b5e4f908855a66f0957bf35137ce3ee37c05230
> Author: H. Peter Anvin <hpa@linux.intel.com>
> AuthorDate: Sun, 16 Feb 2014 16:44:25 -0800
> Committer: H. Peter Anvin <hpa@linux.intel.com>
> CommitDate: Sun, 16 Feb 2014 16:44:25 -0800
>
> x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
>
> We need a lot more dummy locking functions to build in all possible
> configurations.
>
Sigh... the testbot shows that this is even more complicated than this...
-hpa
[-- Attachment #2: Attached Message --]
[-- Type: message/rfc822, Size: 86410 bytes --]
[-- Attachment #2.1.1: Type: text/plain, Size: 5459 bytes --]
tree: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/vdso
head: 74cd745f0ce8cc8b95722ee8fdf1d97ffb3afe0b
commit: 4b5e4f908855a66f0957bf35137ce3ee37c05230 [10/11] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
config: x86_64-randconfig-x005-0217 (attached as .config)
All error/warnings:
In file included from include/linux/spinlock.h:89:0,
from include/linux/seqlock.h:35,
from arch/x86/include/asm/vsyscall.h:4,
from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:28:20: error: conflicting types for 'arch_spin_lock'
static inline void arch_spin_lock(arch_spinlock_t *lock)
^
arch/x86/vdso/vdso32/vclock_gettime.c:45:20: note: previous definition of 'arch_spin_lock' was here
static inline void arch_spin_lock(void *lock)
^
In file included from include/linux/spinlock.h:89:0,
from include/linux/seqlock.h:35,
from arch/x86/include/asm/vsyscall.h:4,
from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:35:1: error: conflicting types for 'arch_spin_lock_flags'
arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
^
arch/x86/vdso/vdso32/vclock_gettime.c:58:20: note: previous definition of 'arch_spin_lock_flags' was here
static inline void arch_spin_lock_flags(void *lock,
^
In file included from include/linux/spinlock.h:89:0,
from include/linux/seqlock.h:35,
from arch/x86/include/asm/vsyscall.h:4,
from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:42:19: error: conflicting types for 'arch_spin_trylock'
static inline int arch_spin_trylock(arch_spinlock_t *lock)
^
arch/x86/vdso/vdso32/vclock_gettime.c:49:19: note: previous definition of 'arch_spin_trylock' was here
static inline int arch_spin_trylock(void *lock)
^
In file included from include/linux/spinlock.h:89:0,
from include/linux/seqlock.h:35,
from arch/x86/include/asm/vsyscall.h:4,
from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:52:20: error: conflicting types for 'arch_spin_unlock'
static inline void arch_spin_unlock(arch_spinlock_t *lock)
^
arch/x86/vdso/vdso32/vclock_gettime.c:54:20: note: previous definition of 'arch_spin_unlock' was here
static inline void arch_spin_unlock(void *lock)
^
vim +/arch_spin_lock +28 include/linux/spinlock_up.h
386afc91 Linus Torvalds 2013-04-09 22 * into the locked sequence, resulting in non-atomic execution.
fb1c8f93 Ingo Molnar 2005-09-10 23 */
fb1c8f93 Ingo Molnar 2005-09-10 24
fb1c8f93 Ingo Molnar 2005-09-10 25 #ifdef CONFIG_DEBUG_SPINLOCK
0199c4e6 Thomas Gleixner 2009-12-02 26 #define arch_spin_is_locked(x) ((x)->slock == 0)
fb1c8f93 Ingo Molnar 2005-09-10 27
0199c4e6 Thomas Gleixner 2009-12-02 @28 static inline void arch_spin_lock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar 2005-09-10 29 {
fb1c8f93 Ingo Molnar 2005-09-10 30 lock->slock = 0;
386afc91 Linus Torvalds 2013-04-09 31 barrier();
fb1c8f93 Ingo Molnar 2005-09-10 32 }
fb1c8f93 Ingo Molnar 2005-09-10 33
fb1c8f93 Ingo Molnar 2005-09-10 34 static inline void
0199c4e6 Thomas Gleixner 2009-12-02 @35 arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
fb1c8f93 Ingo Molnar 2005-09-10 36 {
fb1c8f93 Ingo Molnar 2005-09-10 37 local_irq_save(flags);
fb1c8f93 Ingo Molnar 2005-09-10 38 lock->slock = 0;
386afc91 Linus Torvalds 2013-04-09 39 barrier();
fb1c8f93 Ingo Molnar 2005-09-10 40 }
fb1c8f93 Ingo Molnar 2005-09-10 41
0199c4e6 Thomas Gleixner 2009-12-02 @42 static inline int arch_spin_trylock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar 2005-09-10 43 {
fb1c8f93 Ingo Molnar 2005-09-10 44 char oldval = lock->slock;
fb1c8f93 Ingo Molnar 2005-09-10 45
fb1c8f93 Ingo Molnar 2005-09-10 46 lock->slock = 0;
386afc91 Linus Torvalds 2013-04-09 47 barrier();
fb1c8f93 Ingo Molnar 2005-09-10 48
fb1c8f93 Ingo Molnar 2005-09-10 49 return oldval > 0;
fb1c8f93 Ingo Molnar 2005-09-10 50 }
fb1c8f93 Ingo Molnar 2005-09-10 51
0199c4e6 Thomas Gleixner 2009-12-02 @52 static inline void arch_spin_unlock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar 2005-09-10 53 {
386afc91 Linus Torvalds 2013-04-09 54 barrier();
fb1c8f93 Ingo Molnar 2005-09-10 55 lock->slock = 1;
:::::: The code at line 28 was first introduced by commit
:::::: 0199c4e68d1f02894bdefe4b5d9e9ee4aedd8d62 locking: Convert __raw_spin* functions to arch_spin*
:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>
---
0-DAY kernel build testing backend Open Source Technology Center
http://lists.01.org/mailman/listinfo/kbuild Intel Corporation
[-- Attachment #2.1.2: .config --]
[-- Type: text/plain, Size: 79158 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 3.14.0-rc3 Kernel Configuration
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_CPU_AUTOPROBE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11"
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
CONFIG_KERNEL_XZ=y
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
# CONFIG_SYSVIPC is not set
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_FHANDLE is not set
# CONFIG_AUDIT is not set
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_NO_HZ=y
# CONFIG_HIGH_RES_TIMERS is not set
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
#
# RCU Subsystem
#
CONFIG_TREE_PREEMPT_RCU=y
CONFIG_PREEMPT_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_FANOUT=64
CONFIG_RCU_FANOUT_LEAF=16
# CONFIG_RCU_FANOUT_EXACT is not set
CONFIG_TREE_RCU_TRACE=y
CONFIG_RCU_BOOST=y
CONFIG_RCU_BOOST_PRIO=1
CONFIG_RCU_BOOST_DELAY=500
CONFIG_RCU_NOCB_CPU=y
CONFIG_RCU_NOCB_CPU_NONE=y
# CONFIG_RCU_NOCB_CPU_ZERO is not set
# CONFIG_RCU_NOCB_CPU_ALL is not set
CONFIG_IKCONFIG=y
# CONFIG_IKCONFIG_PROC is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_ARCH_WANTS_PROT_NUMA_PROT_NONE=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CGROUP_DEVICE is not set
CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
# CONFIG_CGROUP_CPUACCT is not set
CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
# CONFIG_MEMCG_SWAP is not set
CONFIG_CGROUP_HUGETLB=y
# CONFIG_CGROUP_PERF is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_USER_NS=y
# CONFIG_PID_NS is not set
CONFIG_NET_NS=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_MM_OWNER=y
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
CONFIG_RD_LZ4=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
# CONFIG_TIMERFD is not set
CONFIG_EVENTFD=y
# CONFIG_SHMEM is not set
# CONFIG_AIO is not set
CONFIG_PCI_QUIRKS=y
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_COMPAT_BRK=y
# CONFIG_SLAB is not set
# CONFIG_SLUB is not set
CONFIG_SLOB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=m
# CONFIG_OPROFILE_EVENT_MULTIPLEX is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
# CONFIG_KPROBES is not set
# CONFIG_JUMP_LABEL is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
CONFIG_CC_STACKPROTECTOR_REGULAR=y
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y
#
# GCOV-based kernel profiling
#
CONFIG_GCOV_KERNEL=y
# CONFIG_GCOV_PROFILE_ALL is not set
# CONFIG_GCOV_FORMAT_AUTODETECT is not set
# CONFIG_GCOV_FORMAT_3_4 is not set
CONFIG_GCOV_FORMAT_4_7=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_SYSTEM_TRUSTED_KEYRING is not set
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
# CONFIG_MODULE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
CONFIG_MODULE_SRCVERSION_ALL=y
# CONFIG_MODULE_SIG is not set
CONFIG_BLOCK=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_BSGLIB is not set
CONFIG_BLK_DEV_INTEGRITY=y
CONFIG_BLK_DEV_THROTTLING=y
# CONFIG_BLK_CMDLINE_PARSER is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
CONFIG_BLOCK_COMPAT=y
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
# CONFIG_IOSCHED_CFQ is not set
CONFIG_DEFAULT_DEADLINE=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="deadline"
CONFIG_UNINLINE_SPIN_UNLOCK=y
# CONFIG_FREEZER is not set
#
# Processor type and features
#
CONFIG_ZONE_DMA=y
# CONFIG_SMP is not set
CONFIG_X86_MPPARSE=y
# CONFIG_X86_EXTENDED_PLATFORM is not set
# CONFIG_X86_INTEL_LPSS is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
# CONFIG_PARAVIRT_DEBUG is not set
# CONFIG_XEN is not set
# CONFIG_XEN_PRIVILEGED_GUEST is not set
CONFIG_KVM_GUEST=y
# CONFIG_KVM_DEBUG_FS is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
CONFIG_PARAVIRT_CLOCK=y
CONFIG_NO_BOOTMEM=y
CONFIG_MEMTEST=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
# CONFIG_DMI is not set
# CONFIG_GART_IOMMU is not set
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
CONFIG_NR_CPUS=1
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
# CONFIG_X86_MCE_INTEL is not set
# CONFIG_X86_MCE_AMD is not set
CONFIG_X86_MCE_INJECT=m
CONFIG_I8K=y
CONFIG_MICROCODE=y
# CONFIG_MICROCODE_INTEL is not set
# CONFIG_MICROCODE_AMD is not set
CONFIG_MICROCODE_OLD_INTERFACE=y
# CONFIG_MICROCODE_INTEL_EARLY is not set
# CONFIG_MICROCODE_AMD_EARLY is not set
CONFIG_MICROCODE_EARLY=y
CONFIG_X86_MSR=y
# CONFIG_X86_CPUID is not set
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DIRECT_GBPAGES=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_MEMORY_ISOLATION=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
CONFIG_MEMORY_FAILURE=y
CONFIG_HWPOISON_INJECT=m
CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NEED_PER_CPU_KM=y
CONFIG_CLEANCACHE=y
# CONFIG_FRONTSWAP is not set
# CONFIG_CMA is not set
# CONFIG_ZBUD is not set
CONFIG_MEM_SOFT_DIRTY=y
# CONFIG_ZSMALLOC is not set
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
CONFIG_X86_RESERVE_LOW=64
# CONFIG_MTRR is not set
CONFIG_ARCH_RANDOM=y
# CONFIG_X86_SMAP is not set
# CONFIG_EFI is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
# CONFIG_SCHED_HRTICK is not set
CONFIG_KEXEC=y
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x1000000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_COMPAT_VDSO=y
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
#
# Power management and ACPI options
#
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
CONFIG_PM_RUNTIME=y
CONFIG_PM=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ACPI=y
# CONFIG_ACPI_PROCFS is not set
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_FAN=y
# CONFIG_ACPI_DOCK is not set
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
# CONFIG_ACPI_INITRD_TABLE_OVERRIDE is not set
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
# CONFIG_ACPI_CONTAINER is not set
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_CUSTOM_METHOD is not set
# CONFIG_ACPI_APEI is not set
# CONFIG_ACPI_EXTLOG is not set
# CONFIG_SFI is not set
#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_MULTIPLE_DRIVERS is not set
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
# CONFIG_INTEL_IDLE is not set
#
# Memory power savings
#
CONFIG_I7300_IDLE_IOAT_CHANNEL=y
CONFIG_I7300_IDLE=y
#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
# CONFIG_PCI_MMCONFIG is not set
CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
# CONFIG_PCIEPORTBUS is not set
# CONFIG_PCI_MSI is not set
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
# CONFIG_PCI_STUB is not set
CONFIG_HT_IRQ=y
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
# CONFIG_PCI_IOAPIC is not set
CONFIG_PCI_LABEL=y
#
# PCI host controller drivers
#
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
CONFIG_PCCARD=y
CONFIG_PCMCIA=m
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_CARDBUS=y
#
# PC-card bridges
#
# CONFIG_YENTA is not set
# CONFIG_PD6729 is not set
# CONFIG_I82092 is not set
# CONFIG_HOTPLUG_PCI is not set
# CONFIG_RAPIDIO is not set
# CONFIG_X86_SYSFB is not set
#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=y
CONFIG_COREDUMP=y
CONFIG_IA32_EMULATION=y
CONFIG_IA32_AOUT=y
CONFIG_X86_X32=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_KEYS_COMPAT=y
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_NET=y
#
# Networking options
#
# CONFIG_PACKET is not set
CONFIG_UNIX=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_NET_KEY is not set
# CONFIG_INET is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_DNS_RESOLVER is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_MMAP is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_NET_MPLS_GSO is not set
# CONFIG_HSR is not set
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
# CONFIG_BPF_JIT is not set
#
# Network testing
#
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
# CONFIG_LIB80211 is not set
#
# CFG80211 needs to be enabled for MAC80211
#
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_RFKILL_REGULATOR is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_NFC is not set
CONFIG_HAVE_BPF_JIT=y
#
# Device Drivers
#
#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPI=y
CONFIG_REGMAP_MMIO=m
CONFIG_REGMAP_IRQ=y
CONFIG_DMA_SHARED_BUFFER=y
#
# Bus devices
#
# CONFIG_CONNECTOR is not set
CONFIG_MTD=m
# CONFIG_MTD_TESTS is not set
CONFIG_MTD_REDBOOT_PARTS=m
CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
CONFIG_MTD_CMDLINE_PARTS=m
# CONFIG_MTD_AR7_PARTS is not set
#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=m
CONFIG_MTD_BLOCK=m
CONFIG_MTD_BLOCK_RO=m
CONFIG_FTL=m
CONFIG_NFTL=m
# CONFIG_NFTL_RW is not set
CONFIG_INFTL=m
CONFIG_RFD_FTL=m
# CONFIG_SSFDC is not set
CONFIG_SM_FTL=m
# CONFIG_MTD_OOPS is not set
CONFIG_MTD_SWAP=m
#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=m
CONFIG_MTD_JEDECPROBE=m
CONFIG_MTD_GEN_PROBE=m
# CONFIG_MTD_CFI_ADV_OPTIONS is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CFI_AMDSTD=m
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=m
CONFIG_MTD_RAM=m
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
#
# Mapping drivers for chip access
#
CONFIG_MTD_COMPLEX_MAPPINGS=y
CONFIG_MTD_PHYSMAP=m
# CONFIG_MTD_PHYSMAP_COMPAT is not set
CONFIG_MTD_SC520CDP=m
# CONFIG_MTD_NETSC520 is not set
CONFIG_MTD_TS5500=m
# CONFIG_MTD_AMD76XROM is not set
# CONFIG_MTD_ICHXROM is not set
# CONFIG_MTD_ESB2ROM is not set
# CONFIG_MTD_CK804XROM is not set
# CONFIG_MTD_SCB2_FLASH is not set
CONFIG_MTD_NETtel=m
CONFIG_MTD_L440GX=m
# CONFIG_MTD_PCI is not set
CONFIG_MTD_PCMCIA=m
# CONFIG_MTD_PCMCIA_ANONYMOUS is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
CONFIG_MTD_PLATRAM=m
CONFIG_MTD_LATCH_ADDR=m
#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 is not set
CONFIG_MTD_DATAFLASH=m
# CONFIG_MTD_DATAFLASH_WRITE_VERIFY is not set
CONFIG_MTD_DATAFLASH_OTP=y
# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_SST25L is not set
CONFIG_MTD_SLRAM=m
CONFIG_MTD_PHRAM=m
# CONFIG_MTD_MTDRAM is not set
CONFIG_MTD_BLOCK2MTD=m
#
# Disk-On-Chip Device Drivers
#
CONFIG_MTD_DOCG3=m
CONFIG_BCH_CONST_M=14
CONFIG_BCH_CONST_T=4
CONFIG_MTD_NAND_ECC=m
CONFIG_MTD_NAND_ECC_SMC=y
# CONFIG_MTD_NAND is not set
CONFIG_MTD_ONENAND=m
# CONFIG_MTD_ONENAND_VERIFY_WRITE is not set
CONFIG_MTD_ONENAND_GENERIC=m
CONFIG_MTD_ONENAND_OTP=y
CONFIG_MTD_ONENAND_2X_PROGRAM=y
#
# LPDDR flash memory drivers
#
# CONFIG_MTD_LPDDR is not set
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_FASTMAP is not set
CONFIG_MTD_UBI_GLUEBI=m
# CONFIG_PARPORT is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y
#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
# CONFIG_BLK_DEV_LOOP is not set
#
# DRBD disabled because PROC_FS or INET not selected
#
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_BLK_DEV_SKD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_VIRTIO_BLK is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RSXX is not set
#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=m
# CONFIG_AD525X_DPOT is not set
CONFIG_DUMMY_IRQ=m
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
# CONFIG_SGI_IOC4 is not set
# CONFIG_TIFM_CORE is not set
CONFIG_ICS932S401=y
# CONFIG_ATMEL_SSC is not set
CONFIG_ENCLOSURE_SERVICES=m
# CONFIG_HP_ILO is not set
CONFIG_APDS9802ALS=y
CONFIG_ISL29003=y
CONFIG_ISL29020=y
# CONFIG_SENSORS_TSL2550 is not set
CONFIG_SENSORS_BH1780=m
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
CONFIG_HMC6352=m
# CONFIG_DS1682 is not set
CONFIG_TI_DAC7512=y
# CONFIG_VMWARE_BALLOON is not set
CONFIG_BMP085=y
CONFIG_BMP085_I2C=y
CONFIG_BMP085_SPI=y
# CONFIG_PCH_PHUB is not set
CONFIG_USB_SWITCH_FSA9480=m
# CONFIG_LATTICE_ECP3_CONFIG is not set
CONFIG_SRAM=y
CONFIG_C2PORT=m
# CONFIG_C2PORT_DURAMAR_2150 is not set
#
# EEPROM support
#
CONFIG_EEPROM_AT24=y
# CONFIG_EEPROM_AT25 is not set
CONFIG_EEPROM_LEGACY=m
CONFIG_EEPROM_MAX6875=m
CONFIG_EEPROM_93CX6=y
# CONFIG_EEPROM_93XX46 is not set
# CONFIG_CB710_CORE is not set
#
# Texas Instruments shared transport line discipline
#
CONFIG_SENSORS_LIS3_I2C=m
#
# Altera FPGA firmware download module
#
CONFIG_ALTERA_STAPL=m
# CONFIG_INTEL_MEI is not set
# CONFIG_INTEL_MEI_ME is not set
# CONFIG_VMWARE_VMCI is not set
#
# Intel MIC Host Driver
#
# CONFIG_INTEL_MIC_HOST is not set
#
# Intel MIC Card Driver
#
CONFIG_INTEL_MIC_CARD=m
# CONFIG_GENWQE is not set
CONFIG_HAVE_IDE=y
CONFIG_IDE=y
#
# Please see Documentation/ide/ide.txt for help/info on IDE drives
#
CONFIG_IDE_XFER_MODE=y
CONFIG_IDE_TIMINGS=y
CONFIG_IDE_ATAPI=y
CONFIG_BLK_DEV_IDE_SATA=y
# CONFIG_IDE_GD is not set
# CONFIG_BLK_DEV_IDECS is not set
# CONFIG_BLK_DEV_DELKIN is not set
CONFIG_BLK_DEV_IDECD=m
# CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS is not set
CONFIG_BLK_DEV_IDETAPE=m
# CONFIG_BLK_DEV_IDEACPI is not set
CONFIG_IDE_TASK_IOCTL=y
# CONFIG_IDE_PROC_FS is not set
#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_PLATFORM=y
CONFIG_BLK_DEV_CMD640=m
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
# CONFIG_BLK_DEV_IDEPNP is not set
#
# PCI IDE chipsets support
#
# CONFIG_BLK_DEV_GENERIC is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_RZ1000 is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD74XX is not set
# CONFIG_BLK_DEV_ATIIXP is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_TRIFLEX is not set
# CONFIG_BLK_DEV_CS5520 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_JMICRON is not set
# CONFIG_BLK_DEV_SC1200 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_IT8172 is not set
# CONFIG_BLK_DEV_IT8213 is not set
# CONFIG_BLK_DEV_IT821X is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_PDC202XX_OLD is not set
# CONFIG_BLK_DEV_PDC202XX_NEW is not set
# CONFIG_BLK_DEV_SVWKS is not set
# CONFIG_BLK_DEV_SIIMAGE is not set
# CONFIG_BLK_DEV_SIS5513 is not set
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
# CONFIG_BLK_DEV_TC86C001 is not set
# CONFIG_BLK_DEV_IDEDMA is not set
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
CONFIG_RAID_ATTRS=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
# CONFIG_SCSI_PROC_FS is not set
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
# CONFIG_CHR_DEV_ST is not set
CONFIG_CHR_DEV_OSST=y
# CONFIG_BLK_DEV_SR is not set
CONFIG_CHR_DEV_SG=m
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_ENCLOSURE is not set
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=m
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
CONFIG_SCSI_SAS_ATTRS=m
# CONFIG_SCSI_SAS_LIBSAS is not set
CONFIG_SCSI_SRP_ATTRS=m
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_SCSI_LOWLEVEL_PCMCIA=y
CONFIG_PCMCIA_AHA152X=m
CONFIG_PCMCIA_FDOMAIN=m
CONFIG_PCMCIA_QLOGIC=m
CONFIG_PCMCIA_SYM53C500=m
CONFIG_SCSI_DH=y
CONFIG_SCSI_DH_RDAC=m
CONFIG_SCSI_DH_HP_SW=m
CONFIG_SCSI_DH_EMC=y
# CONFIG_SCSI_DH_ALUA is not set
CONFIG_SCSI_OSD_INITIATOR=y
# CONFIG_SCSI_OSD_ULD is not set
CONFIG_SCSI_OSD_DPRINT_SENSE=1
# CONFIG_SCSI_OSD_DEBUG is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
# CONFIG_ATA_VERBOSE_ERROR is not set
CONFIG_ATA_ACPI=y
# CONFIG_SATA_ZPODD is not set
# CONFIG_SATA_PMP is not set
#
# Controllers with non-SFF native interface
#
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_AHCI_PLATFORM is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_SATA_ACARD_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
#
# SFF controllers with custom DMA interface
#
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_SX4 is not set
CONFIG_ATA_BMDMA=y
#
# SATA SFF controllers with BMDMA
#
# CONFIG_ATA_PIIX is not set
CONFIG_SATA_HIGHBANK=y
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_RCAR is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_SVW is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
#
# PATA SFF controllers with BMDMA
#
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SCH is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PCMCIA is not set
CONFIG_PATA_PLATFORM=y
# CONFIG_PATA_RZ1000 is not set
#
# Generic fallback / legacy drivers
#
# CONFIG_PATA_ACPI is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_LEGACY is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=m
CONFIG_MD_LINEAR=m
# CONFIG_MD_RAID0 is not set
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
# CONFIG_MD_MULTIPATH is not set
# CONFIG_MD_FAULTY is not set
# CONFIG_BCACHE is not set
CONFIG_BLK_DEV_DM_BUILTIN=y
CONFIG_BLK_DEV_DM=m
CONFIG_DM_DEBUG=y
CONFIG_DM_BUFIO=m
CONFIG_DM_BIO_PRISON=m
CONFIG_DM_PERSISTENT_DATA=m
CONFIG_DM_CRYPT=m
# CONFIG_DM_SNAPSHOT is not set
CONFIG_DM_THIN_PROVISIONING=m
# CONFIG_DM_DEBUG_BLOCK_STACK_TRACING is not set
CONFIG_DM_CACHE=m
# CONFIG_DM_CACHE_MQ is not set
CONFIG_DM_CACHE_CLEANER=m
CONFIG_DM_MIRROR=m
# CONFIG_DM_LOG_USERSPACE is not set
CONFIG_DM_RAID=m
# CONFIG_DM_ZERO is not set
CONFIG_DM_MULTIPATH=m
# CONFIG_DM_MULTIPATH_QL is not set
CONFIG_DM_MULTIPATH_ST=m
CONFIG_DM_DELAY=m
# CONFIG_DM_UEVENT is not set
CONFIG_DM_FLAKEY=m
CONFIG_DM_VERITY=m
CONFIG_DM_SWITCH=m
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# CONFIG_I2O is not set
CONFIG_MACINTOSH_DRIVERS=y
# CONFIG_NETDEVICES is not set
# CONFIG_VHOST_NET is not set
#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=m
CONFIG_INPUT_POLLDEV=m
CONFIG_INPUT_SPARSEKMAP=m
CONFIG_INPUT_MATRIXKMAP=m
#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=m
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=m
CONFIG_INPUT_EVBUG=m
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TWL4030 is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_INPUT_MOUSE is not set
CONFIG_INPUT_JOYSTICK=y
CONFIG_JOYSTICK_ANALOG=m
# CONFIG_JOYSTICK_A3D is not set
CONFIG_JOYSTICK_ADI=m
CONFIG_JOYSTICK_COBRA=m
CONFIG_JOYSTICK_GF2K=m
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
# CONFIG_JOYSTICK_GUILLEMOT is not set
CONFIG_JOYSTICK_INTERACT=m
CONFIG_JOYSTICK_SIDEWINDER=m
# CONFIG_JOYSTICK_TMDC is not set
CONFIG_JOYSTICK_IFORCE=m
# CONFIG_JOYSTICK_IFORCE_232 is not set
# CONFIG_JOYSTICK_WARRIOR is not set
CONFIG_JOYSTICK_MAGELLAN=m
# CONFIG_JOYSTICK_SPACEORB is not set
CONFIG_JOYSTICK_SPACEBALL=m
CONFIG_JOYSTICK_STINGER=m
# CONFIG_JOYSTICK_TWIDJOY is not set
CONFIG_JOYSTICK_ZHENHUA=m
CONFIG_JOYSTICK_AS5011=m
CONFIG_JOYSTICK_JOYDUMP=m
# CONFIG_JOYSTICK_XPAD is not set
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_HANWANG is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_WACOM is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
CONFIG_INPUT_MISC=y
CONFIG_INPUT_88PM860X_ONKEY=m
CONFIG_INPUT_88PM80X_ONKEY=m
CONFIG_INPUT_AD714X=m
# CONFIG_INPUT_AD714X_I2C is not set
CONFIG_INPUT_AD714X_SPI=m
# CONFIG_INPUT_ARIZONA_HAPTICS is not set
# CONFIG_INPUT_BMA150 is not set
CONFIG_INPUT_PCSPKR=m
CONFIG_INPUT_MC13783_PWRBUTTON=m
CONFIG_INPUT_MMA8450=m
# CONFIG_INPUT_MPU3050 is not set
CONFIG_INPUT_APANEL=m
# CONFIG_INPUT_ATLAS_BTNS is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
CONFIG_INPUT_KXTJ9=m
# CONFIG_INPUT_KXTJ9_POLLED_MODE is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
CONFIG_INPUT_RETU_PWRBUTTON=m
CONFIG_INPUT_TWL4030_PWRBUTTON=m
CONFIG_INPUT_TWL4030_VIBRA=m
CONFIG_INPUT_TWL6040_VIBRA=m
CONFIG_INPUT_UINPUT=m
CONFIG_INPUT_PCF8574=m
CONFIG_INPUT_DA9052_ONKEY=m
CONFIG_INPUT_DA9055_ONKEY=m
CONFIG_INPUT_WM831X_ON=m
CONFIG_INPUT_PCAP=m
# CONFIG_INPUT_ADXL34X is not set
CONFIG_INPUT_CMA3000=m
# CONFIG_INPUT_CMA3000_I2C is not set
CONFIG_INPUT_IDEAPAD_SLIDEBAR=m
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_CT82C710=y
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
# CONFIG_SERIO_ALTERA_PS2 is not set
CONFIG_SERIO_PS2MULT=m
# CONFIG_SERIO_ARC_PS2 is not set
CONFIG_GAMEPORT=y
# CONFIG_GAMEPORT_NS558 is not set
# CONFIG_GAMEPORT_L4 is not set
# CONFIG_GAMEPORT_EMU10K1 is not set
# CONFIG_GAMEPORT_FM801 is not set
#
# Character devices
#
CONFIG_TTY=y
# CONFIG_VT is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
CONFIG_DEVKMEM=y
#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
# CONFIG_SERIAL_8250_CS is not set
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
# CONFIG_SERIAL_MFD_HSU is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_TIMBERDALE is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_PCH_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=m
CONFIG_HW_RANDOM_TIMERIOMEM=m
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=m
CONFIG_HW_RANDOM_VIA=m
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_HW_RANDOM_TPM=m
CONFIG_NVRAM=m
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
CONFIG_CARDMAN_4000=m
CONFIG_CARDMAN_4040=m
# CONFIG_MWAVE is not set
CONFIG_RAW_DRIVER=m
CONFIG_MAX_RAW_DEVS=256
# CONFIG_HPET is not set
CONFIG_HANGCHECK_TIMER=y
CONFIG_TCG_TPM=m
# CONFIG_TCG_TIS is not set
CONFIG_TCG_TIS_I2C_ATMEL=m
CONFIG_TCG_TIS_I2C_INFINEON=m
CONFIG_TCG_TIS_I2C_NUVOTON=m
# CONFIG_TCG_NSC is not set
CONFIG_TCG_ATMEL=m
# CONFIG_TCG_INFINEON is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
# CONFIG_I2C_MUX is not set
# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_I2C_SMBUS=y
#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
CONFIG_I2C_ALGOPCA=m
#
# I2C Hardware Bus support
#
#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_ISMT is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set
#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
CONFIG_I2C_DESIGNWARE_CORE=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
# CONFIG_I2C_DESIGNWARE_PCI is not set
# CONFIG_I2C_EG20T is not set
# CONFIG_I2C_KEMPLD is not set
CONFIG_I2C_OCORES=y
CONFIG_I2C_PCA_PLATFORM=m
# CONFIG_I2C_PXA_PCI is not set
CONFIG_I2C_SIMTEC=m
CONFIG_I2C_XILINX=m
#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_PARPORT_LIGHT=y
# CONFIG_I2C_TAOS_EVM is not set
#
# Other I2C/SMBus bus drivers
#
CONFIG_I2C_STUB=m
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
CONFIG_SPI=y
CONFIG_SPI_DEBUG=y
CONFIG_SPI_MASTER=y
#
# SPI Master Controller Drivers
#
CONFIG_SPI_ALTERA=m
CONFIG_SPI_BITBANG=y
# CONFIG_SPI_PXA2XX is not set
# CONFIG_SPI_PXA2XX_PCI is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_TOPCLIFF_PCH is not set
CONFIG_SPI_XCOMM=m
CONFIG_SPI_XILINX=y
CONFIG_SPI_DESIGNWARE=m
# CONFIG_SPI_DW_PCI is not set
#
# SPI Protocol Masters
#
CONFIG_SPI_SPIDEV=m
CONFIG_SPI_TLE62X0=m
CONFIG_HSI=m
CONFIG_HSI_BOARDINFO=y
#
# HSI clients
#
# CONFIG_HSI_CHAR is not set
#
# PPS support
#
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set
#
# PPS generators support
#
#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
CONFIG_PTP_1588_CLOCK_PCH=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_GPIOLIB is not set
CONFIG_W1=y
#
# 1-wire Bus Masters
#
# CONFIG_W1_MASTER_MATROX is not set
CONFIG_W1_MASTER_DS2482=m
CONFIG_W1_MASTER_DS1WM=y
#
# 1-wire Slaves
#
CONFIG_W1_SLAVE_THERM=y
CONFIG_W1_SLAVE_SMEM=m
CONFIG_W1_SLAVE_DS2408=m
CONFIG_W1_SLAVE_DS2408_READBACK=y
CONFIG_W1_SLAVE_DS2413=y
CONFIG_W1_SLAVE_DS2423=y
CONFIG_W1_SLAVE_DS2431=y
CONFIG_W1_SLAVE_DS2433=m
CONFIG_W1_SLAVE_DS2433_CRC=y
CONFIG_W1_SLAVE_DS2760=m
# CONFIG_W1_SLAVE_DS2780 is not set
CONFIG_W1_SLAVE_DS2781=y
CONFIG_W1_SLAVE_DS28E04=y
# CONFIG_W1_SLAVE_BQ27000 is not set
CONFIG_POWER_SUPPLY=y
CONFIG_POWER_SUPPLY_DEBUG=y
CONFIG_PDA_POWER=m
CONFIG_GENERIC_ADC_BATTERY=m
CONFIG_WM831X_BACKUP=m
CONFIG_WM831X_POWER=y
# CONFIG_TEST_POWER is not set
CONFIG_BATTERY_88PM860X=y
CONFIG_BATTERY_DS2760=m
# CONFIG_BATTERY_DS2780 is not set
CONFIG_BATTERY_DS2781=y
CONFIG_BATTERY_DS2782=m
CONFIG_BATTERY_SBS=m
CONFIG_BATTERY_BQ27x00=m
# CONFIG_BATTERY_BQ27X00_I2C is not set
CONFIG_BATTERY_BQ27X00_PLATFORM=y
CONFIG_BATTERY_DA9030=m
# CONFIG_BATTERY_DA9052 is not set
# CONFIG_BATTERY_MAX17040 is not set
CONFIG_BATTERY_MAX17042=y
CONFIG_BATTERY_TWL4030_MADC=m
CONFIG_CHARGER_88PM860X=y
# CONFIG_BATTERY_RX51 is not set
CONFIG_CHARGER_MAX8903=m
# CONFIG_CHARGER_TWL4030 is not set
CONFIG_CHARGER_LP8727=y
CONFIG_CHARGER_MAX14577=y
# CONFIG_CHARGER_MAX8997 is not set
CONFIG_CHARGER_BQ2415X=m
CONFIG_CHARGER_SMB347=y
# CONFIG_POWER_RESET is not set
CONFIG_POWER_AVS=y
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
CONFIG_HWMON_DEBUG_CHIP=y
#
# Native drivers
#
CONFIG_SENSORS_AD7314=m
CONFIG_SENSORS_AD7414=y
CONFIG_SENSORS_AD7418=y
CONFIG_SENSORS_ADCXX=m
CONFIG_SENSORS_ADM1021=m
CONFIG_SENSORS_ADM1025=m
CONFIG_SENSORS_ADM1026=m
CONFIG_SENSORS_ADM1029=m
CONFIG_SENSORS_ADM1031=m
# CONFIG_SENSORS_ADM9240 is not set
CONFIG_SENSORS_ADT7X10=y
CONFIG_SENSORS_ADT7310=y
# CONFIG_SENSORS_ADT7410 is not set
CONFIG_SENSORS_ADT7411=y
# CONFIG_SENSORS_ADT7462 is not set
CONFIG_SENSORS_ADT7470=y
# CONFIG_SENSORS_ADT7475 is not set
CONFIG_SENSORS_ASC7621=y
# CONFIG_SENSORS_K8TEMP is not set
# CONFIG_SENSORS_K10TEMP is not set
# CONFIG_SENSORS_FAM15H_POWER is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
CONFIG_SENSORS_DA9052_ADC=m
CONFIG_SENSORS_DA9055=m
# CONFIG_SENSORS_I5K_AMB is not set
CONFIG_SENSORS_F71805F=y
CONFIG_SENSORS_F71882FG=m
CONFIG_SENSORS_F75375S=m
CONFIG_SENSORS_FSCHMD=y
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
CONFIG_SENSORS_HIH6130=y
CONFIG_SENSORS_HTU21=y
CONFIG_SENSORS_CORETEMP=y
CONFIG_SENSORS_IIO_HWMON=m
CONFIG_SENSORS_IT87=y
# CONFIG_SENSORS_JC42 is not set
CONFIG_SENSORS_LINEAGE=m
CONFIG_SENSORS_LM63=y
CONFIG_SENSORS_LM70=y
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
CONFIG_SENSORS_LM77=m
# CONFIG_SENSORS_LM78 is not set
CONFIG_SENSORS_LM80=m
# CONFIG_SENSORS_LM83 is not set
CONFIG_SENSORS_LM85=y
CONFIG_SENSORS_LM87=m
CONFIG_SENSORS_LM90=y
CONFIG_SENSORS_LM92=m
CONFIG_SENSORS_LM93=m
# CONFIG_SENSORS_LTC4151 is not set
CONFIG_SENSORS_LTC4215=m
CONFIG_SENSORS_LTC4245=y
CONFIG_SENSORS_LTC4261=y
CONFIG_SENSORS_LM95234=y
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
CONFIG_SENSORS_MAX1111=y
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
CONFIG_SENSORS_MAX1668=m
# CONFIG_SENSORS_MAX197 is not set
CONFIG_SENSORS_MAX6639=y
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
CONFIG_SENSORS_MAX6697=y
CONFIG_SENSORS_MCP3021=y
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NTC_THERMISTOR is not set
CONFIG_SENSORS_PC87360=y
CONFIG_SENSORS_PC87427=m
CONFIG_SENSORS_PCF8591=y
CONFIG_PMBUS=m
CONFIG_SENSORS_PMBUS=m
CONFIG_SENSORS_ADM1275=m
CONFIG_SENSORS_LM25066=m
CONFIG_SENSORS_LTC2978=m
CONFIG_SENSORS_MAX16064=m
CONFIG_SENSORS_MAX34440=m
CONFIG_SENSORS_MAX8688=m
# CONFIG_SENSORS_UCD9000 is not set
# CONFIG_SENSORS_UCD9200 is not set
# CONFIG_SENSORS_ZL6100 is not set
CONFIG_SENSORS_SHT21=m
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_DME1737 is not set
CONFIG_SENSORS_EMC1403=m
CONFIG_SENSORS_EMC2103=m
CONFIG_SENSORS_EMC6W201=m
CONFIG_SENSORS_SMSC47M1=m
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
CONFIG_SENSORS_SCH56XX_COMMON=m
CONFIG_SENSORS_SCH5627=m
# CONFIG_SENSORS_SCH5636 is not set
CONFIG_SENSORS_ADS1015=m
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_ADS7871 is not set
CONFIG_SENSORS_AMC6821=y
CONFIG_SENSORS_INA209=y
# CONFIG_SENSORS_INA2XX is not set
CONFIG_SENSORS_THMC50=m
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_TWL4030_MADC is not set
# CONFIG_SENSORS_VIA_CPUTEMP is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
CONFIG_SENSORS_W83781D=y
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
CONFIG_SENSORS_W83795=y
CONFIG_SENSORS_W83795_FANCTRL=y
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=m
CONFIG_SENSORS_W83627HF=y
CONFIG_SENSORS_W83627EHF=m
CONFIG_SENSORS_WM831X=y
# CONFIG_SENSORS_APPLESMC is not set
# CONFIG_SENSORS_MC13783_ADC is not set
#
# ACPI drivers
#
# CONFIG_SENSORS_ACPI_POWER is not set
# CONFIG_SENSORS_ATK0110 is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
# CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE is not set
CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE=y
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
CONFIG_THERMAL_GOV_FAIR_SHARE=y
# CONFIG_THERMAL_GOV_STEP_WISE is not set
CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_EMULATION is not set
CONFIG_INTEL_POWERCLAMP=m
# CONFIG_ACPI_INT3403_THERMAL is not set
#
# Texas Instruments thermal drivers
#
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
CONFIG_WATCHDOG_NOWAYOUT=y
#
# Watchdog Device Drivers
#
CONFIG_SOFT_WATCHDOG=m
# CONFIG_DA9052_WATCHDOG is not set
CONFIG_DA9055_WATCHDOG=m
CONFIG_WM831X_WATCHDOG=y
CONFIG_DW_WATCHDOG=m
CONFIG_TWL4030_WATCHDOG=m
# CONFIG_RETU_WATCHDOG is not set
CONFIG_ACQUIRE_WDT=m
CONFIG_ADVANTECH_WDT=y
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
CONFIG_F71808E_WDT=y
# CONFIG_SP5100_TCO is not set
CONFIG_SC520_WDT=y
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
CONFIG_IB700_WDT=m
CONFIG_IBMASR=m
CONFIG_WAFER_WDT=m
# CONFIG_I6300ESB_WDT is not set
# CONFIG_IE6XX_WDT is not set
# CONFIG_ITCO_WDT is not set
CONFIG_IT8712F_WDT=y
CONFIG_IT87_WDT=m
# CONFIG_HP_WATCHDOG is not set
CONFIG_KEMPLD_WDT=m
CONFIG_SC1200_WDT=y
# CONFIG_PC87413_WDT is not set
# CONFIG_NV_TCO is not set
# CONFIG_60XX_WDT is not set
CONFIG_SBC8360_WDT=y
CONFIG_CPU5_WDT=y
CONFIG_SMSC_SCH311X_WDT=m
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_VIA_WDT is not set
CONFIG_W83627HF_WDT=y
CONFIG_W83697HF_WDT=y
# CONFIG_W83697UG_WDT is not set
# CONFIG_W83877F_WDT is not set
CONFIG_W83977F_WDT=y
CONFIG_MACHZ_WDT=y
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set
CONFIG_SSB_POSSIBLE=y
#
# Sonics Silicon Backplane
#
CONFIG_SSB=m
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not set
CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
CONFIG_SSB_PCMCIAHOST=y
CONFIG_SSB_SDIOHOST_POSSIBLE=y
CONFIG_SSB_SDIOHOST=y
# CONFIG_SSB_SILENT is not set
CONFIG_SSB_DEBUG=y
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
# CONFIG_SSB_DRIVER_PCICORE is not set
CONFIG_BCMA_POSSIBLE=y
#
# Broadcom specific AMBA
#
CONFIG_BCMA=y
CONFIG_BCMA_HOST_PCI_POSSIBLE=y
CONFIG_BCMA_HOST_PCI=y
CONFIG_BCMA_HOST_SOC=y
# CONFIG_BCMA_DRIVER_GMAC_CMN is not set
# CONFIG_BCMA_DEBUG is not set
#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_CS5535 is not set
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_CROS_EC is not set
CONFIG_PMIC_DA903X=y
CONFIG_PMIC_DA9052=y
CONFIG_MFD_DA9052_SPI=y
CONFIG_MFD_DA9052_I2C=y
CONFIG_MFD_DA9055=y
CONFIG_MFD_DA9063=y
CONFIG_MFD_MC13XXX=m
CONFIG_MFD_MC13XXX_SPI=m
CONFIG_MFD_MC13XXX_I2C=m
CONFIG_HTC_PASIC3=y
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_JANZ_CMODIO is not set
CONFIG_MFD_KEMPLD=y
CONFIG_MFD_88PM800=m
# CONFIG_MFD_88PM805 is not set
CONFIG_MFD_88PM860X=y
CONFIG_MFD_MAX14577=y
CONFIG_MFD_MAX77686=y
CONFIG_MFD_MAX77693=y
CONFIG_MFD_MAX8907=y
# CONFIG_MFD_MAX8925 is not set
CONFIG_MFD_MAX8997=y
# CONFIG_MFD_MAX8998 is not set
CONFIG_EZX_PCAP=y
CONFIG_MFD_RETU=y
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_RTSX_PCI is not set
CONFIG_MFD_RC5T583=y
# CONFIG_MFD_SEC_CORE is not set
CONFIG_MFD_SI476X_CORE=y
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_STMPE is not set
# CONFIG_MFD_SYSCON is not set
CONFIG_MFD_TI_AM335X_TSCADC=m
CONFIG_MFD_LP3943=m
CONFIG_MFD_LP8788=y
# CONFIG_MFD_PALMAS is not set
CONFIG_TPS6105X=y
CONFIG_TPS6507X=y
# CONFIG_MFD_TPS65090 is not set
CONFIG_MFD_TPS65217=y
CONFIG_MFD_TPS6586X=y
CONFIG_MFD_TPS80031=y
CONFIG_TWL4030_CORE=y
CONFIG_TWL4030_MADC=m
CONFIG_MFD_TWL4030_AUDIO=y
CONFIG_TWL6040_CORE=y
CONFIG_MFD_WL1273_CORE=m
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TC3589X is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_VX855 is not set
CONFIG_MFD_ARIZONA=y
CONFIG_MFD_ARIZONA_I2C=y
CONFIG_MFD_ARIZONA_SPI=m
CONFIG_MFD_WM5102=y
CONFIG_MFD_WM5110=y
CONFIG_MFD_WM8997=y
CONFIG_MFD_WM8400=y
CONFIG_MFD_WM831X=y
CONFIG_MFD_WM831X_I2C=y
CONFIG_MFD_WM831X_SPI=y
# CONFIG_MFD_WM8350_I2C is not set
CONFIG_MFD_WM8994=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=m
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_88PM800 is not set
CONFIG_REGULATOR_88PM8607=m
# CONFIG_REGULATOR_ACT8865 is not set
# CONFIG_REGULATOR_AD5398 is not set
CONFIG_REGULATOR_ARIZONA=m
CONFIG_REGULATOR_DA903X=m
# CONFIG_REGULATOR_DA9052 is not set
# CONFIG_REGULATOR_DA9055 is not set
# CONFIG_REGULATOR_DA9063 is not set
CONFIG_REGULATOR_DA9210=y
# CONFIG_REGULATOR_FAN53555 is not set
CONFIG_REGULATOR_ISL6271A=y
CONFIG_REGULATOR_LP3971=y
# CONFIG_REGULATOR_LP3972 is not set
CONFIG_REGULATOR_LP872X=m
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_LP8788 is not set
CONFIG_REGULATOR_MAX14577=m
# CONFIG_REGULATOR_MAX1586 is not set
CONFIG_REGULATOR_MAX8649=y
CONFIG_REGULATOR_MAX8660=m
# CONFIG_REGULATOR_MAX8907 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX8973 is not set
CONFIG_REGULATOR_MAX8997=y
# CONFIG_REGULATOR_MAX77686 is not set
CONFIG_REGULATOR_MAX77693=y
CONFIG_REGULATOR_MC13XXX_CORE=m
CONFIG_REGULATOR_MC13783=m
CONFIG_REGULATOR_MC13892=m
CONFIG_REGULATOR_PCAP=m
# CONFIG_REGULATOR_PFUZE100 is not set
CONFIG_REGULATOR_RC5T583=m
CONFIG_REGULATOR_TPS51632=y
CONFIG_REGULATOR_TPS6105X=m
CONFIG_REGULATOR_TPS62360=m
# CONFIG_REGULATOR_TPS65023 is not set
CONFIG_REGULATOR_TPS6507X=m
CONFIG_REGULATOR_TPS65217=m
# CONFIG_REGULATOR_TPS6524X is not set
CONFIG_REGULATOR_TPS6586X=m
CONFIG_REGULATOR_TPS80031=m
CONFIG_REGULATOR_TWL4030=y
CONFIG_REGULATOR_WM831X=y
CONFIG_REGULATOR_WM8400=y
# CONFIG_REGULATOR_WM8994 is not set
CONFIG_MEDIA_SUPPORT=m
#
# Multimedia core support
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
# CONFIG_MEDIA_DIGITAL_TV_SUPPORT is not set
CONFIG_MEDIA_RADIO_SUPPORT=y
# CONFIG_MEDIA_RC_SUPPORT is not set
CONFIG_MEDIA_CONTROLLER=y
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_VIDEO_V4L2=m
CONFIG_VIDEO_ADV_DEBUG=y
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
# CONFIG_TTPCI_EEPROM is not set
#
# Media drivers
#
# CONFIG_MEDIA_PCI_SUPPORT is not set
# CONFIG_V4L_PLATFORM_DRIVERS is not set
# CONFIG_V4L_MEM2MEM_DRIVERS is not set
# CONFIG_V4L_TEST_DRIVERS is not set
#
# Supported MMC/SDIO adapters
#
# CONFIG_RADIO_ADAPTERS is not set
#
# Media ancillary drivers (tuners, sensors, i2c, frontends)
#
# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
CONFIG_MEDIA_ATTACH=y
#
# Encoders, decoders, sensors and other helper chips
#
#
# Audio decoders, processors and mixers
#
# CONFIG_VIDEO_TVAUDIO is not set
# CONFIG_VIDEO_TDA7432 is not set
CONFIG_VIDEO_TDA9840=m
# CONFIG_VIDEO_TEA6415C is not set
CONFIG_VIDEO_TEA6420=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
# CONFIG_VIDEO_TLV320AIC23B is not set
CONFIG_VIDEO_UDA1342=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m
CONFIG_VIDEO_SONY_BTF_MPX=m
#
# RDS decoders
#
CONFIG_VIDEO_SAA6588=m
#
# Video decoders
#
CONFIG_VIDEO_ADV7180=m
CONFIG_VIDEO_ADV7183=m
# CONFIG_VIDEO_ADV7604 is not set
CONFIG_VIDEO_ADV7842=m
CONFIG_VIDEO_BT819=m
# CONFIG_VIDEO_BT856 is not set
CONFIG_VIDEO_BT866=m
# CONFIG_VIDEO_KS0127 is not set
CONFIG_VIDEO_ML86V7667=m
CONFIG_VIDEO_SAA7110=m
CONFIG_VIDEO_SAA711X=m
CONFIG_VIDEO_SAA7191=m
# CONFIG_VIDEO_TVP514X is not set
CONFIG_VIDEO_TVP5150=m
CONFIG_VIDEO_TVP7002=m
# CONFIG_VIDEO_TW2804 is not set
# CONFIG_VIDEO_TW9903 is not set
# CONFIG_VIDEO_TW9906 is not set
CONFIG_VIDEO_VPX3220=m
#
# Video and audio decoders
#
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_CX25840=m
#
# Video encoders
#
# CONFIG_VIDEO_SAA7127 is not set
CONFIG_VIDEO_SAA7185=m
CONFIG_VIDEO_ADV7170=m
CONFIG_VIDEO_ADV7175=m
CONFIG_VIDEO_ADV7343=m
CONFIG_VIDEO_ADV7393=m
CONFIG_VIDEO_ADV7511=m
CONFIG_VIDEO_AD9389B=m
# CONFIG_VIDEO_AK881X is not set
# CONFIG_VIDEO_THS8200 is not set
#
# Camera sensor devices
#
CONFIG_VIDEO_APTINA_PLL=m
CONFIG_VIDEO_OV7640=m
CONFIG_VIDEO_OV7670=m
# CONFIG_VIDEO_OV9650 is not set
# CONFIG_VIDEO_VS6624 is not set
CONFIG_VIDEO_MT9M032=m
CONFIG_VIDEO_MT9P031=m
CONFIG_VIDEO_MT9T001=m
# CONFIG_VIDEO_MT9V011 is not set
# CONFIG_VIDEO_MT9V032 is not set
CONFIG_VIDEO_SR030PC30=m
CONFIG_VIDEO_NOON010PC30=m
CONFIG_VIDEO_M5MOLS=m
CONFIG_VIDEO_S5K6AA=m
CONFIG_VIDEO_S5K4ECGX=m
CONFIG_VIDEO_S5K5BAF=m
# CONFIG_VIDEO_S5C73M3 is not set
#
# Flash devices
#
# CONFIG_VIDEO_ADP1653 is not set
# CONFIG_VIDEO_AS3645A is not set
CONFIG_VIDEO_LM3560=m
#
# Video improvement chips
#
# CONFIG_VIDEO_UPD64031A is not set
CONFIG_VIDEO_UPD64083=m
#
# Audio/Video compression chips
#
# CONFIG_VIDEO_SAA6752HS is not set
#
# Miscellaneous helper chips
#
CONFIG_VIDEO_THS7303=m
CONFIG_VIDEO_M52790=m
#
# Sensors used on soc_camera driver
#
CONFIG_MEDIA_TUNER=m
#
# Customize TV tuners
#
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_MT2060=m
CONFIG_MEDIA_TUNER_MT2063=m
CONFIG_MEDIA_TUNER_MT2266=m
# CONFIG_MEDIA_TUNER_MT2131 is not set
CONFIG_MEDIA_TUNER_QT1010=m
CONFIG_MEDIA_TUNER_XC2028=m
# CONFIG_MEDIA_TUNER_XC5000 is not set
CONFIG_MEDIA_TUNER_XC4000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
# CONFIG_MEDIA_TUNER_MXL5007T is not set
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_MEDIA_TUNER_MAX2165=m
CONFIG_MEDIA_TUNER_TDA18218=m
CONFIG_MEDIA_TUNER_FC0011=m
CONFIG_MEDIA_TUNER_FC0012=m
# CONFIG_MEDIA_TUNER_FC0013 is not set
CONFIG_MEDIA_TUNER_TDA18212=m
# CONFIG_MEDIA_TUNER_E4000 is not set
# CONFIG_MEDIA_TUNER_FC2580 is not set
CONFIG_MEDIA_TUNER_M88TS2022=m
CONFIG_MEDIA_TUNER_TUA9001=m
CONFIG_MEDIA_TUNER_IT913X=m
# CONFIG_MEDIA_TUNER_R820T is not set
#
# Customise DVB Frontends
#
CONFIG_DVB_AU8522=m
CONFIG_DVB_AU8522_V4L=m
CONFIG_DVB_TUNER_DIB0070=m
CONFIG_DVB_TUNER_DIB0090=m
#
# Tools to develop new frontends
#
CONFIG_DVB_DUMMY_FE=m
#
# Graphics support
#
# CONFIG_AGP is not set
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_NOUVEAU is not set
# CONFIG_DRM_I915 is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
# CONFIG_DRM_VMWGFX is not set
# CONFIG_DRM_GMA500 is not set
# CONFIG_DRM_UDL is not set
# CONFIG_DRM_AST is not set
# CONFIG_DRM_MGAG200 is not set
# CONFIG_DRM_CIRRUS_QEMU is not set
# CONFIG_DRM_QXL is not set
# CONFIG_DRM_BOCHS is not set
# CONFIG_VGASTATE is not set
CONFIG_VIDEO_OUTPUT_CONTROL=y
CONFIG_HDMI=y
CONFIG_FB=m
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=m
CONFIG_FB_CFB_COPYAREA=m
CONFIG_FB_CFB_IMAGEBLIT=m
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=m
CONFIG_FB_SYS_COPYAREA=m
CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=m
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_HECUBA=m
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set
#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
CONFIG_FB_ARC=m
# CONFIG_FB_VGA16 is not set
CONFIG_FB_N411=m
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_TMIO is not set
CONFIG_FB_GOLDFISH=m
# CONFIG_FB_VIRTUAL is not set
CONFIG_FB_METRONOME=m
# CONFIG_FB_MB862XX is not set
CONFIG_FB_BROADSHEET=m
# CONFIG_FB_AUO_K190X is not set
# CONFIG_EXYNOS_VIDEO is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# CONFIG_LOGO is not set
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_COMPRESS_OFFLOAD=m
CONFIG_SND_JACK=y
# CONFIG_SND_SEQUENCER is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
# CONFIG_SND_PCM_OSS_PLUGINS is not set
# CONFIG_SND_DYNAMIC_MINORS is not set
# CONFIG_SND_SUPPORT_OLD_API is not set
CONFIG_SND_VERBOSE_PROCFS=y
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
CONFIG_SND_DEBUG_VERBOSE=y
# CONFIG_SND_PCM_XRUN_DEBUG is not set
CONFIG_SND_DMA_SGBUF=y
# CONFIG_SND_RAWMIDI_SEQ is not set
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
CONFIG_SND_MPU401_UART=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_DUMMY=m
CONFIG_SND_ALOOP=m
# CONFIG_SND_MTPAV is not set
CONFIG_SND_SERIAL_U16550=m
CONFIG_SND_MPU401=m
CONFIG_SND_PCI=y
# CONFIG_SND_AD1889 is not set
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ASIHPI is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_OXYGEN is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CS5530 is not set
# CONFIG_SND_CS5535AUDIO is not set
# CONFIG_SND_CTXFI is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_INDIGOIOX is not set
# CONFIG_SND_INDIGODJX is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
# CONFIG_SND_HDA_INTEL is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_LOLA is not set
# CONFIG_SND_LX6464ES is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
# CONFIG_SND_VIA82XX is not set
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VIRTUOSO is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
CONFIG_SND_SPI=y
CONFIG_SND_PCMCIA=y
CONFIG_SND_VXPOCKET=m
CONFIG_SND_PDAUDIOCF=m
CONFIG_SND_SOC=m
CONFIG_SND_ATMEL_SOC=m
CONFIG_SND_SOC_I2C_AND_SPI=m
CONFIG_SND_SIMPLE_CARD=m
CONFIG_SOUND_PRIME=m
# CONFIG_SOUND_OSS is not set
#
# HID support
#
CONFIG_HID=m
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=m
#
# Special HID drivers
#
CONFIG_HID_A4TECH=m
# CONFIG_HID_ACRUX is not set
# CONFIG_HID_APPLE is not set
CONFIG_HID_AUREAL=m
# CONFIG_HID_BELKIN is not set
CONFIG_HID_CHERRY=m
CONFIG_HID_CHICONY=m
# CONFIG_HID_PRODIKEYS is not set
# CONFIG_HID_CYPRESS is not set
CONFIG_HID_DRAGONRISE=m
CONFIG_DRAGONRISE_FF=y
CONFIG_HID_EMS_FF=m
CONFIG_HID_ELECOM=m
CONFIG_HID_EZKEY=m
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_UCLOGIC is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_GYRATION is not set
CONFIG_HID_ICADE=m
CONFIG_HID_TWINHAN=m
CONFIG_HID_KENSINGTON=m
CONFIG_HID_LCPOWER=m
CONFIG_HID_LENOVO_TPKBD=m
CONFIG_HID_LOGITECH=m
CONFIG_LOGITECH_FF=y
CONFIG_LOGIRUMBLEPAD2_FF=y
# CONFIG_LOGIG940_FF is not set
# CONFIG_LOGIWHEELS_FF is not set
CONFIG_HID_MAGICMOUSE=m
CONFIG_HID_MICROSOFT=m
CONFIG_HID_MONTEREY=m
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_ORTEK is not set
CONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
CONFIG_HID_PETALYNX=m
# CONFIG_HID_PICOLCD is not set
CONFIG_HID_PRIMAX=m
CONFIG_HID_SAITEK=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SPEEDLINK=m
CONFIG_HID_STEELSERIES=m
CONFIG_HID_SUNPLUS=m
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
CONFIG_HID_TIVO=m
CONFIG_HID_TOPSEED=m
CONFIG_HID_THINGM=m
CONFIG_HID_THRUSTMASTER=m
CONFIG_THRUSTMASTER_FF=y
# CONFIG_HID_WACOM is not set
CONFIG_HID_WIIMOTE=m
CONFIG_HID_XINMO=m
CONFIG_HID_ZEROPLUS=m
CONFIG_ZEROPLUS_FF=y
CONFIG_HID_ZYDACRON=m
# CONFIG_HID_SENSOR_HUB is not set
#
# I2C HID support
#
CONFIG_I2C_HID=m
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
# CONFIG_USB is not set
#
# USB port drivers
#
#
# USB Physical Layer drivers
#
# CONFIG_USB_PHY is not set
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_SAMSUNG_USB2PHY is not set
# CONFIG_SAMSUNG_USB3PHY is not set
# CONFIG_USB_GADGET is not set
# CONFIG_UWB is not set
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
CONFIG_MMC_UNSAFE_RESUME=y
# CONFIG_MMC_CLKGATE is not set
#
# MMC/SD/SDIO Card Drivers
#
# CONFIG_MMC_BLOCK is not set
# CONFIG_SDIO_UART is not set
CONFIG_MMC_TEST=m
#
# MMC/SD/SDIO Host Controller Drivers
#
# CONFIG_MMC_SDHCI is not set
CONFIG_MMC_WBSD=m
# CONFIG_MMC_TIFM_SD is not set
CONFIG_MMC_SPI=m
# CONFIG_MMC_SDRICOH_CS is not set
# CONFIG_MMC_CB710 is not set
# CONFIG_MMC_VIA_SDMMC is not set
CONFIG_MEMSTICK=y
# CONFIG_MEMSTICK_DEBUG is not set
#
# MemoryStick drivers
#
CONFIG_MEMSTICK_UNSAFE_RESUME=y
# CONFIG_MSPRO_BLOCK is not set
# CONFIG_MS_BLOCK is not set
#
# MemoryStick Host Controller Drivers
#
# CONFIG_MEMSTICK_TIFM_MS is not set
# CONFIG_MEMSTICK_JMICRON_38X is not set
# CONFIG_MEMSTICK_R592 is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m
#
# LED drivers
#
CONFIG_LEDS_88PM860X=m
# CONFIG_LEDS_LM3530 is not set
# CONFIG_LEDS_LM3642 is not set
CONFIG_LEDS_PCA9532=m
# CONFIG_LEDS_LP3944 is not set
CONFIG_LEDS_LP55XX_COMMON=m
CONFIG_LEDS_LP5521=m
CONFIG_LEDS_LP5523=m
CONFIG_LEDS_LP5562=m
CONFIG_LEDS_LP8501=m
CONFIG_LEDS_LP8788=m
CONFIG_LEDS_PCA955X=m
CONFIG_LEDS_PCA963X=m
CONFIG_LEDS_PCA9685=m
CONFIG_LEDS_WM831X_STATUS=m
CONFIG_LEDS_DA903X=m
# CONFIG_LEDS_DA9052 is not set
CONFIG_LEDS_DAC124S085=m
CONFIG_LEDS_PWM=m
CONFIG_LEDS_REGULATOR=m
CONFIG_LEDS_BD2802=m
# CONFIG_LEDS_MC13783 is not set
CONFIG_LEDS_TCA6507=m
# CONFIG_LEDS_MAX8997 is not set
# CONFIG_LEDS_LM355x is not set
# CONFIG_LEDS_OT200 is not set
CONFIG_LEDS_BLINKM=m
#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
# CONFIG_LEDS_TRIGGER_ONESHOT is not set
CONFIG_LEDS_TRIGGER_HEARTBEAT=m
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
#
# iptables trigger is under Netfilter config (LED target)
#
CONFIG_LEDS_TRIGGER_TRANSIENT=m
CONFIG_LEDS_TRIGGER_CAMERA=m
CONFIG_ACCESSIBILITY=y
CONFIG_EDAC=y
# CONFIG_EDAC_LEGACY_SYSFS is not set
# CONFIG_EDAC_DEBUG is not set
CONFIG_EDAC_MM_EDAC=y
# CONFIG_EDAC_E752X is not set
# CONFIG_EDAC_I82975X is not set
# CONFIG_EDAC_I3000 is not set
# CONFIG_EDAC_I3200 is not set
# CONFIG_EDAC_X38 is not set
# CONFIG_EDAC_I5400 is not set
# CONFIG_EDAC_I5000 is not set
# CONFIG_EDAC_I5100 is not set
# CONFIG_EDAC_I7300 is not set
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set
CONFIG_AUXDISPLAY=y
CONFIG_UIO=y
# CONFIG_UIO_CIF is not set
CONFIG_UIO_PDRV_GENIRQ=y
CONFIG_UIO_DMEM_GENIRQ=y
# CONFIG_UIO_AEC is not set
# CONFIG_UIO_SERCOS3 is not set
# CONFIG_UIO_PCI_GENERIC is not set
# CONFIG_UIO_NETX is not set
# CONFIG_UIO_MF624 is not set
CONFIG_VIRT_DRIVERS=y
CONFIG_VIRTIO=m
#
# Virtio drivers
#
# CONFIG_VIRTIO_PCI is not set
# CONFIG_VIRTIO_BALLOON is not set
CONFIG_VIRTIO_MMIO=m
CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
#
# Microsoft Hyper-V guest support
#
# CONFIG_HYPERV is not set
# CONFIG_STAGING is not set
CONFIG_X86_PLATFORM_DEVICES=y
# CONFIG_ACERHDF is not set
# CONFIG_ASUS_LAPTOP is not set
# CONFIG_FUJITSU_TABLET is not set
# CONFIG_HP_ACCEL is not set
# CONFIG_HP_WIRELESS is not set
# CONFIG_THINKPAD_ACPI is not set
CONFIG_SENSORS_HDAPS=m
# CONFIG_INTEL_MENLOW is not set
# CONFIG_ACPI_WMI is not set
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_TOSHIBA_BT_RFKILL is not set
# CONFIG_ACPI_CMPC is not set
# CONFIG_INTEL_IPS is not set
# CONFIG_IBM_RTL is not set
# CONFIG_XO15_EBOOK is not set
# CONFIG_SAMSUNG_Q10 is not set
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not set
# CONFIG_PVPANIC is not set
# CONFIG_CHROME_PLATFORMS is not set
#
# Hardware Spinlock drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
CONFIG_MAILBOX=y
# CONFIG_IOMMU_SUPPORT is not set
#
# Remoteproc drivers
#
# CONFIG_STE_MODEM_RPROC is not set
#
# Rpmsg drivers
#
CONFIG_PM_DEVFREQ=y
#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
CONFIG_DEVFREQ_GOV_USERSPACE=m
#
# DEVFREQ Drivers
#
# CONFIG_EXTCON is not set
CONFIG_MEMORY=y
CONFIG_IIO=m
CONFIG_IIO_BUFFER=y
# CONFIG_IIO_BUFFER_CB is not set
CONFIG_IIO_KFIFO_BUF=m
CONFIG_IIO_TRIGGERED_BUFFER=m
CONFIG_IIO_TRIGGER=y
CONFIG_IIO_CONSUMERS_PER_TRIGGER=2
#
# Accelerometers
#
CONFIG_BMA180=m
# CONFIG_IIO_ST_ACCEL_3AXIS is not set
CONFIG_KXSD9=m
#
# Analog to digital converters
#
CONFIG_AD_SIGMA_DELTA=m
CONFIG_AD7266=m
CONFIG_AD7298=m
CONFIG_AD7476=m
CONFIG_AD7791=m
CONFIG_AD7793=m
# CONFIG_AD7887 is not set
# CONFIG_AD7923 is not set
# CONFIG_LP8788_ADC is not set
CONFIG_MAX1363=m
CONFIG_MCP320X=m
# CONFIG_MCP3422 is not set
CONFIG_NAU7802=m
CONFIG_TI_ADC081C=m
# CONFIG_TI_AM335X_ADC is not set
# CONFIG_TWL6030_GPADC is not set
#
# Amplifiers
#
# CONFIG_AD8366 is not set
#
# Hid Sensor IIO Common
#
CONFIG_IIO_ST_SENSORS_I2C=m
CONFIG_IIO_ST_SENSORS_SPI=m
CONFIG_IIO_ST_SENSORS_CORE=m
#
# Digital to analog converters
#
CONFIG_AD5064=m
# CONFIG_AD5360 is not set
CONFIG_AD5380=m
CONFIG_AD5421=m
CONFIG_AD5446=m
CONFIG_AD5449=m
CONFIG_AD5504=m
CONFIG_AD5624R_SPI=m
CONFIG_AD5686=m
CONFIG_AD5755=m
CONFIG_AD5764=m
CONFIG_AD5791=m
CONFIG_AD7303=m
CONFIG_MAX517=m
CONFIG_MCP4725=m
#
# Frequency Synthesizers DDS/PLL
#
#
# Clock Generator/Distribution
#
# CONFIG_AD9523 is not set
#
# Phase-Locked Loop (PLL) frequency synthesizers
#
CONFIG_ADF4350=m
#
# Digital gyroscope sensors
#
# CONFIG_ADIS16080 is not set
CONFIG_ADIS16130=m
# CONFIG_ADIS16136 is not set
# CONFIG_ADIS16260 is not set
# CONFIG_ADXRS450 is not set
CONFIG_IIO_ST_GYRO_3AXIS=m
CONFIG_IIO_ST_GYRO_I2C_3AXIS=m
CONFIG_IIO_ST_GYRO_SPI_3AXIS=m
# CONFIG_ITG3200 is not set
#
# Humidity sensors
#
#
# Inertial measurement units
#
CONFIG_ADIS16400=m
CONFIG_ADIS16480=m
CONFIG_IIO_ADIS_LIB=m
CONFIG_IIO_ADIS_LIB_BUFFER=y
CONFIG_INV_MPU6050_IIO=m
#
# Light sensors
#
# CONFIG_ADJD_S311 is not set
# CONFIG_APDS9300 is not set
CONFIG_CM32181=m
# CONFIG_CM36651 is not set
# CONFIG_GP2AP020A00F is not set
CONFIG_TCS3472=m
# CONFIG_SENSORS_TSL2563 is not set
CONFIG_TSL4531=m
CONFIG_VCNL4000=m
#
# Magnetometer sensors
#
CONFIG_MAG3110=m
CONFIG_IIO_ST_MAGN_3AXIS=m
CONFIG_IIO_ST_MAGN_I2C_3AXIS=m
CONFIG_IIO_ST_MAGN_SPI_3AXIS=m
#
# Inclinometer sensors
#
#
# Triggers - standalone
#
CONFIG_IIO_INTERRUPT_TRIGGER=m
# CONFIG_IIO_SYSFS_TRIGGER is not set
#
# Pressure sensors
#
# CONFIG_MPL3115 is not set
CONFIG_IIO_ST_PRESS=m
CONFIG_IIO_ST_PRESS_I2C=m
CONFIG_IIO_ST_PRESS_SPI=m
#
# Temperature sensors
#
CONFIG_TMP006=m
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
# CONFIG_PWM_LP3943 is not set
CONFIG_PWM_TWL=m
CONFIG_PWM_TWL_LED=y
CONFIG_IPACK_BUS=m
# CONFIG_BOARD_TPCI200 is not set
# CONFIG_SERIAL_IPOCTAL is not set
CONFIG_RESET_CONTROLLER=y
CONFIG_FMC=m
CONFIG_FMC_FAKEDEV=m
CONFIG_FMC_TRIVIAL=m
CONFIG_FMC_WRITE_EEPROM=m
# CONFIG_FMC_CHARDEV is not set
#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
CONFIG_PHY_EXYNOS_MIPI_VIDEO=y
CONFIG_BCM_KONA_USB2_PHY=y
CONFIG_POWERCAP=y
CONFIG_INTEL_RAPL=y
#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DELL_RBU=m
# CONFIG_DCDBAS is not set
# CONFIG_ISCSI_IBFT_FIND is not set
CONFIG_GOOGLE_FIRMWARE=y
#
# Google Firmware Drivers
#
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_EXT2_FS=m
CONFIG_EXT2_FS_XATTR=y
# CONFIG_EXT2_FS_POSIX_ACL is not set
CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT2_FS_XIP=y
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=m
# CONFIG_EXT4_USE_FOR_EXT23 is not set
# CONFIG_EXT4_FS_POSIX_ACL is not set
# CONFIG_EXT4_FS_SECURITY is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_FS_XIP=y
CONFIG_JBD2=m
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=m
# CONFIG_REISERFS_FS is not set
CONFIG_JFS_FS=y
CONFIG_JFS_POSIX_ACL=y
CONFIG_JFS_SECURITY=y
# CONFIG_JFS_DEBUG is not set
CONFIG_JFS_STATISTICS=y
CONFIG_XFS_FS=m
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
# CONFIG_XFS_RT is not set
CONFIG_XFS_WARN=y
# CONFIG_XFS_DEBUG is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_BTRFS_FS=y
# CONFIG_BTRFS_FS_POSIX_ACL is not set
# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
CONFIG_BTRFS_FS_RUN_SANITY_TESTS=y
# CONFIG_BTRFS_DEBUG is not set
CONFIG_BTRFS_ASSERT=y
# CONFIG_NILFS2_FS is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=m
# CONFIG_FILE_LOCKING is not set
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QUOTA_DEBUG is not set
CONFIG_QFMT_V1=y
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
CONFIG_QUOTACTL_COMPAT=y
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y
#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
CONFIG_NTFS_FS=y
CONFIG_NTFS_DEBUG=y
# CONFIG_NTFS_RW is not set
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
# CONFIG_PROC_SYSCTL is not set
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_CODEPAGE_437 is not set
CONFIG_NLS_CODEPAGE_737=m
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
CONFIG_NLS_CODEPAGE_852=y
CONFIG_NLS_CODEPAGE_855=y
CONFIG_NLS_CODEPAGE_857=y
# CONFIG_NLS_CODEPAGE_860 is not set
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
CONFIG_NLS_CODEPAGE_866=m
# CONFIG_NLS_CODEPAGE_869 is not set
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=y
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=y
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=y
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=y
CONFIG_NLS_ISO8859_6=y
CONFIG_NLS_ISO8859_7=y
CONFIG_NLS_ISO8859_9=y
CONFIG_NLS_ISO8859_13=y
CONFIG_NLS_ISO8859_14=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_KOI8_R=m
CONFIG_NLS_KOI8_U=m
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
CONFIG_NLS_MAC_CROATIAN=m
CONFIG_NLS_MAC_CYRILLIC=y
# CONFIG_NLS_MAC_GAELIC is not set
CONFIG_NLS_MAC_GREEK=m
CONFIG_NLS_MAC_ICELAND=y
CONFIG_NLS_MAC_INUIT=m
CONFIG_NLS_MAC_ROMANIAN=y
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
#
# Compile-time checks and compiler options
#
# CONFIG_DEBUG_INFO is not set
CONFIG_ENABLE_WARN_DEPRECATED=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=2048
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_MAGIC_SYSRQ is not set
CONFIG_DEBUG_KERNEL=y
#
# Memory Debugging
#
CONFIG_DEBUG_PAGEALLOC=y
CONFIG_WANT_PAGE_DEBUG_FLAGS=y
CONFIG_PAGE_GUARD=y
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACKOVERFLOW is not set
CONFIG_HAVE_ARCH_KMEMCHECK=y
# CONFIG_DEBUG_SHIRQ is not set
#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_HARDLOCKUP_DETECTOR=y
# CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=0
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
CONFIG_SCHED_DEBUG=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_PREEMPT=y
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_DEBUG_RT_MUTEXES is not set
CONFIG_RT_MUTEX_TESTER=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LOCKING_API_SELFTESTS=y
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_WRITECOUNT is not set
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
#
# RCU Debugging
#
CONFIG_PROVE_RCU_DELAY=y
CONFIG_SPARSE_RCU_POINTER=y
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
# CONFIG_RCU_CPU_STALL_VERBOSE is not set
# CONFIG_RCU_CPU_STALL_INFO is not set
CONFIG_RCU_TRACE=y
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
CONFIG_NOTIFIER_ERROR_INJECTION=y
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
# CONFIG_FAULT_INJECTION is not set
CONFIG_LATENCYTOP=y
CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS=y
# CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
#
# Runtime Testing
#
CONFIG_LKDTM=y
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
CONFIG_RBTREE_TEST=y
CONFIG_INTERVAL_TREE_TEST=m
CONFIG_PERCPU_TEST=m
# CONFIG_ATOMIC64_SELFTEST is not set
CONFIG_ASYNC_RAID6_TEST=m
# CONFIG_TEST_STRING_HELPERS is not set
CONFIG_TEST_KSTRTOX=y
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
CONFIG_DMA_API_DEBUG=y
# CONFIG_TEST_MODULE is not set
# CONFIG_TEST_USER_COPY is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_STRICT_DEVMEM is not set
CONFIG_X86_VERBOSE_BOOTUP=y
# CONFIG_EARLY_PRINTK is not set
# CONFIG_X86_PTDUMP is not set
# CONFIG_DEBUG_RODATA is not set
CONFIG_DEBUG_SET_MODULE_RONX=y
# CONFIG_DEBUG_NX_TEST is not set
# CONFIG_DOUBLEFAULT is not set
CONFIG_DEBUG_TLBFLUSH=y
CONFIG_IOMMU_STRESS=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
# CONFIG_IO_DELAY_0X80 is not set
CONFIG_IO_DELAY_0XED=y
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=1
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
CONFIG_DEBUG_NMI_SELFTEST=y
CONFIG_X86_DEBUG_STATIC_CPU_HAS=y
#
# Security options
#
CONFIG_KEYS=y
CONFIG_PERSISTENT_KEYRINGS=y
CONFIG_TRUSTED_KEYS=m
# CONFIG_ENCRYPTED_KEYS is not set
CONFIG_KEYS_DEBUG_PROC_KEYS=y
CONFIG_SECURITY_DMESG_RESTRICT=y
# CONFIG_SECURITY is not set
CONFIG_SECURITYFS=y
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_XOR_BLOCKS=y
CONFIG_ASYNC_CORE=m
CONFIG_ASYNC_MEMCPY=m
CONFIG_ASYNC_XOR=m
CONFIG_ASYNC_PQ=m
CONFIG_ASYNC_RAID6_RECOV=m
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP=m
CONFIG_CRYPTO_PCOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_GF128MUL=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CRYPTO_CRYPTD=y
# CONFIG_CRYPTO_AUTHENC is not set
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_ABLK_HELPER=m
CONFIG_CRYPTO_GLUE_HELPER_X86=y
#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=y
# CONFIG_CRYPTO_GCM is not set
CONFIG_CRYPTO_SEQIV=y
#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=y
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=y
#
# Hash modes
#
CONFIG_CRYPTO_CMAC=m
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
CONFIG_CRYPTO_VMAC=y
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=m
CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_CRC32_PCLMUL=y
CONFIG_CRYPTO_CRCT10DIF=y
CONFIG_CRYPTO_CRCT10DIF_PCLMUL=y
# CONFIG_CRYPTO_GHASH is not set
CONFIG_CRYPTO_MD4=y
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_RMD256=m
CONFIG_CRYPTO_RMD320=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA1_SSSE3=m
CONFIG_CRYPTO_SHA256_SSSE3=m
# CONFIG_CRYPTO_SHA512_SSSE3 is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=y
#
# Ciphers
#
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_AES_X86_64=y
CONFIG_CRYPTO_AES_NI_INTEL=m
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_BLOWFISH_COMMON=m
# CONFIG_CRYPTO_BLOWFISH_X86_64 is not set
CONFIG_CRYPTO_CAMELLIA=y
CONFIG_CRYPTO_CAMELLIA_X86_64=y
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=m
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=m
CONFIG_CRYPTO_CAST_COMMON=y
CONFIG_CRYPTO_CAST5=y
# CONFIG_CRYPTO_CAST5_AVX_X86_64 is not set
CONFIG_CRYPTO_CAST6=y
CONFIG_CRYPTO_CAST6_AVX_X86_64=m
CONFIG_CRYPTO_DES=m
# CONFIG_CRYPTO_FCRYPT is not set
CONFIG_CRYPTO_KHAZAD=y
# CONFIG_CRYPTO_SALSA20 is not set
CONFIG_CRYPTO_SALSA20_X86_64=m
CONFIG_CRYPTO_SEED=y
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
# CONFIG_CRYPTO_SERPENT_AVX_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set
CONFIG_CRYPTO_TEA=y
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_X86_64=m
# CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
# CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set
#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
CONFIG_CRYPTO_ZLIB=m
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=y
#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
CONFIG_CRYPTO_HW=y
CONFIG_CRYPTO_DEV_PADLOCK=y
# CONFIG_CRYPTO_DEV_PADLOCK_AES is not set
CONFIG_CRYPTO_DEV_PADLOCK_SHA=y
# CONFIG_CRYPTO_DEV_CCP is not set
# CONFIG_ASYMMETRIC_KEY_TYPE is not set
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
# CONFIG_BINARY_PRINTF is not set
#
# Library routines
#
CONFIG_RAID6_PQ=y
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_CRC_CCITT=m
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
# CONFIG_CRC32_SLICEBY8 is not set
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
CONFIG_CRC32_BIT=y
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
# CONFIG_CRC8 is not set
CONFIG_RANDOM32_SELFTEST=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_COMPRESS=m
CONFIG_LZ4HC_COMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_XZ_DEC=y
# CONFIG_XZ_DEC_X86 is not set
CONFIG_XZ_DEC_POWERPC=y
# CONFIG_XZ_DEC_IA64 is not set
# CONFIG_XZ_DEC_ARM is not set
# CONFIG_XZ_DEC_ARMTHUMB is not set
CONFIG_XZ_DEC_SPARC=y
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_BCH=m
CONFIG_BCH_CONST_PARAMS=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_CHECK_SIGNATURE=y
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
CONFIG_AVERAGE=y
CONFIG_CORDIC=m
CONFIG_DDR=y
^ permalink raw reply [flat|nested] 31+ messages in thread
* [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-16 21:52 ` [PATCH v18 09/10] Add 32 bit VDSO time support for 64 bit kernel Stefani Seibold
2014-02-17 0:53 ` [tip:x86/vdso] x86, vdso: Add 32-bit VDSO time support for the 64-bit kernel tip-bot for Stefani Seibold
2014-02-17 0:54 ` [tip:x86/vdso] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c tip-bot for H. Peter Anvin
@ 2014-02-17 3:51 ` tip-bot for H. Peter Anvin
2014-02-17 4:06 ` H. Peter Anvin
2 siblings, 1 reply; 31+ messages in thread
From: tip-bot for H. Peter Anvin @ 2014-02-17 3:51 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, stefani, tglx, hpa
Commit-ID: bd9ee7fd99f127ee1306289415141d45792c97f3
Gitweb: http://git.kernel.org/tip/bd9ee7fd99f127ee1306289415141d45792c97f3
Author: H. Peter Anvin <hpa@linux.intel.com>
AuthorDate: Sun, 16 Feb 2014 19:47:01 -0800
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sun, 16 Feb 2014 19:47:01 -0800
x86, vdso: Instead of dummy functions, include <linux/spinlock_up.h>
The list of dummy functions is insufficient. However, instead of
having a full list of dummy functions we can include
<linux/spinlock_up.h> which contains the (trivial) implementations
that we use on uniprocessor.
There aren't supposed to be any spinlocks at all in the VDSO, of
course.
Cc: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1392587568-7325-10-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/vdso/vdso32/vclock_gettime.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
index 5de5057..2335f26 100644
--- a/arch/x86/vdso/vdso32/vclock_gettime.c
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -36,20 +36,12 @@
* a lot of warnings with make C=1.
* It is imposible not to include spinlock.h since most kernel headers does
* include it.
+ *
+ * <linux/spinlock_up.h> includes the minimal functions which are used
+ * on UP; include it instead.
*/
#define _ASM_X86_SPINLOCK_H
-
-/*
- * dummys for unneeded arck_spin functions
- */
-static inline void arch_spin_unlock_wait(void *p)
-{
-}
-
-static inline int arch_spin_is_locked(void *p)
-{
- return 0;
-}
+#include <linux/spinlock_up.h>
/*
* The define of CONFIG_ILLEGAL_POINTER_VALUE is also to prevent the
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 3:51 ` [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h> tip-bot for H. Peter Anvin
@ 2014-02-17 4:06 ` H. Peter Anvin
2014-02-17 7:42 ` Stefani Seibold
0 siblings, 1 reply; 31+ messages in thread
From: H. Peter Anvin @ 2014-02-17 4:06 UTC (permalink / raw)
To: mingo, linux-kernel, stefani, tglx, hpa, linux-tip-commits
On 02/16/2014 07:51 PM, tip-bot for H. Peter Anvin wrote:
> Commit-ID: bd9ee7fd99f127ee1306289415141d45792c97f3
> Gitweb: http://git.kernel.org/tip/bd9ee7fd99f127ee1306289415141d45792c97f3
> Author: H. Peter Anvin <hpa@linux.intel.com>
> AuthorDate: Sun, 16 Feb 2014 19:47:01 -0800
> Committer: H. Peter Anvin <hpa@linux.intel.com>
> CommitDate: Sun, 16 Feb 2014 19:47:01 -0800
>
> x86, vdso: Instead of dummy functions, include <linux/spinlock_up.h>
>
> The list of dummy functions is insufficient. However, instead of
> having a full list of dummy functions we can include
> <linux/spinlock_up.h> which contains the (trivial) implementations
> that we use on uniprocessor.
>
> There aren't supposed to be any spinlocks at all in the VDSO, of
> course.
>
That didn't work either. I thought I was clever, but it didn't work at
all. Multiple build failures across numerous configurations. This is
turning into a total headache.
The "right" way to fix this is presumably to refactor a bunch of header
files so that the vdso code doesn't have to include a bunch of kernel
internal headers, but that is a lot of work.
-hpa
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 4:06 ` H. Peter Anvin
@ 2014-02-17 7:42 ` Stefani Seibold
2014-02-17 9:27 ` H. Peter Anvin
0 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-17 7:42 UTC (permalink / raw)
To: H. Peter Anvin
Cc: mingo, linux-kernel, tglx, hpa, linux-tip-commits, Andy Lutomirski
Hi Peter,
Am Sonntag, den 16.02.2014, 20:06 -0800 schrieb H. Peter Anvin:
> On 02/16/2014 07:51 PM, tip-bot for H. Peter Anvin wrote:
> > Commit-ID: bd9ee7fd99f127ee1306289415141d45792c97f3
> > Gitweb: http://git.kernel.org/tip/bd9ee7fd99f127ee1306289415141d45792c97f3
> > Author: H. Peter Anvin <hpa@linux.intel.com>
> > AuthorDate: Sun, 16 Feb 2014 19:47:01 -0800
> > Committer: H. Peter Anvin <hpa@linux.intel.com>
> > CommitDate: Sun, 16 Feb 2014 19:47:01 -0800
> >
> > x86, vdso: Instead of dummy functions, include <linux/spinlock_up.h>
> >
> > The list of dummy functions is insufficient. However, instead of
> > having a full list of dummy functions we can include
> > <linux/spinlock_up.h> which contains the (trivial) implementations
> > that we use on uniprocessor.
> >
> > There aren't supposed to be any spinlocks at all in the VDSO, of
> > course.
> >
>
> That didn't work either. I thought I was clever, but it didn't work at
> all. Multiple build failures across numerous configurations. This is
> turning into a total headache.
>
> The "right" way to fix this is presumably to refactor a bunch of header
> files so that the vdso code doesn't have to include a bunch of kernel
> internal headers, but that is a lot of work.
>
I think for the first time it will be okay to kick out the
_ASM_X86_SPINLOCK_H hack and accept the C=1 warnings.
At next step it is necessary to make the whole BUILD_VDSO32 path in
vclock_gettime.c independent from the kernel headers, only uapi/ should
be included.
The use of cycle_t must be replaced with u64.
We need a own copy of __native_read_tsc(), __iter_div_u64_rem, smp_rmb()
and cpu_relax().
For the non BUILD_VDSO32 path we must only move the #includes inside
this #ifndef BUILD_VDSO32
- Stefani
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 7:42 ` Stefani Seibold
@ 2014-02-17 9:27 ` H. Peter Anvin
2014-02-17 9:46 ` Stefani Seibold
0 siblings, 1 reply; 31+ messages in thread
From: H. Peter Anvin @ 2014-02-17 9:27 UTC (permalink / raw)
To: Stefani Seibold
Cc: mingo, linux-kernel, tglx, hpa, linux-tip-commits, Andy Lutomirski
On 02/16/2014 11:42 PM, Stefani Seibold wrote:
> I think for the first time it will be okay to kick out the
> _ASM_X86_SPINLOCK_H hack and accept the C=1 warnings.
>
> At next step it is necessary to make the whole BUILD_VDSO32 path in
> vclock_gettime.c independent from the kernel headers, only uapi/ should
> be included.
>
> The use of cycle_t must be replaced with u64.
>
> We need a own copy of __native_read_tsc(), __iter_div_u64_rem, smp_rmb()
> and cpu_relax().
All of which are quite trivial.
> For the non BUILD_VDSO32 path we must only move the #includes inside
> this #ifndef BUILD_VDSO32
Sorry, didn't quite follow that.
-hpa
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 9:27 ` H. Peter Anvin
@ 2014-02-17 9:46 ` Stefani Seibold
2014-02-17 9:50 ` H. Peter Anvin
0 siblings, 1 reply; 31+ messages in thread
From: Stefani Seibold @ 2014-02-17 9:46 UTC (permalink / raw)
To: H. Peter Anvin
Cc: mingo, linux-kernel, tglx, hpa, linux-tip-commits, Andy Lutomirski
Am Montag, den 17.02.2014, 01:27 -0800 schrieb H. Peter Anvin:
> On 02/16/2014 11:42 PM, Stefani Seibold wrote:
> > I think for the first time it will be okay to kick out the
> > _ASM_X86_SPINLOCK_H hack and accept the C=1 warnings.
> >
> > At next step it is necessary to make the whole BUILD_VDSO32 path in
> > vclock_gettime.c independent from the kernel headers, only uapi/ should
> > be included.
> >
> > The use of cycle_t must be replaced with u64.
> >
> > We need a own copy of __native_read_tsc(), __iter_div_u64_rem, smp_rmb()
> > and cpu_relax().
>
> All of which are quite trivial.
>
> > For the non BUILD_VDSO32 path we must only move the #includes inside
> > this #ifndef BUILD_VDSO32
>
> Sorry, didn't quite follow that.
>
The solution is quite simple: In case of a 32 bit VDSO for a 64 bit
kernel fake a 32 bit kernel configuration. Than everything is fine and
all kernel headers will compile without warnings or errors, also make
C=1 will give no complains.
The arch/x86/vdso/vdso32/vclock_gettime.c will now look like:
#define BUILD_VDSO32
#ifdef CONFIG_X86_64
/*
* in case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
* configuration
*/
#undef CONFIG_64BIT
#undef CONFIG_X86_64
#undef CONFIG_ILLEGAL_POINTER_VALUE
#define CONFIG_X86_32 1
#define CONFIG_PAGE_OFFSET 0
#define CONFIG_ILLEGAL_POINTER_VALUE 0
#define BUILD_VDSO32_64
#endif
#include "../vclock_gettime.c"
and the following modifications for arch/x86/include/asm/vgtod.h:
#ifdef BUILD_VDSO32_64
typedef u64 gtod_long_t;
#else
typedef unsigned long gtod_long_t;
#endif
I tested it and i see no side effects. What do you think?
- Stefani
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 9:46 ` Stefani Seibold
@ 2014-02-17 9:50 ` H. Peter Anvin
2014-02-17 10:07 ` Stefani Seibold
0 siblings, 1 reply; 31+ messages in thread
From: H. Peter Anvin @ 2014-02-17 9:50 UTC (permalink / raw)
To: Stefani Seibold
Cc: mingo, linux-kernel, tglx, hpa, linux-tip-commits, Andy Lutomirski
On 02/17/2014 01:46 AM, Stefani Seibold wrote:
> Am Montag, den 17.02.2014, 01:27 -0800 schrieb H. Peter Anvin:
>> On 02/16/2014 11:42 PM, Stefani Seibold wrote:
>>> I think for the first time it will be okay to kick out the
>>> _ASM_X86_SPINLOCK_H hack and accept the C=1 warnings.
>>>
>>> At next step it is necessary to make the whole BUILD_VDSO32 path in
>>> vclock_gettime.c independent from the kernel headers, only uapi/ should
>>> be included.
>>>
>>> The use of cycle_t must be replaced with u64.
>>>
>>> We need a own copy of __native_read_tsc(), __iter_div_u64_rem, smp_rmb()
>>> and cpu_relax().
>>
>> All of which are quite trivial.
>>
>>> For the non BUILD_VDSO32 path we must only move the #includes inside
>>> this #ifndef BUILD_VDSO32
>>
>> Sorry, didn't quite follow that.
>>
>
> The solution is quite simple: In case of a 32 bit VDSO for a 64 bit
> kernel fake a 32 bit kernel configuration. Than everything is fine and
> all kernel headers will compile without warnings or errors, also make
> C=1 will give no complains.
>
> The arch/x86/vdso/vdso32/vclock_gettime.c will now look like:
>
> #define BUILD_VDSO32
>
> #ifdef CONFIG_X86_64
>
> /*
> * in case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
> * configuration
> */
> #undef CONFIG_64BIT
> #undef CONFIG_X86_64
> #undef CONFIG_ILLEGAL_POINTER_VALUE
>
> #define CONFIG_X86_32 1
> #define CONFIG_PAGE_OFFSET 0
> #define CONFIG_ILLEGAL_POINTER_VALUE 0
>
> #define BUILD_VDSO32_64
>
> #endif
>
> #include "../vclock_gettime.c"
>
> and the following modifications for arch/x86/include/asm/vgtod.h:
>
> #ifdef BUILD_VDSO32_64
> typedef u64 gtod_long_t;
> #else
> typedef unsigned long gtod_long_t;
> #endif
>
> I tested it and i see no side effects. What do you think?
>
Clever. It is still a hack of course, and it would be better to getting
to the point where we don't include random kernel headers but only uapi
headers plus special headers sanitized specifically for the vdso, but
the above looks like a good intermediate hack.
-hpa
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [tip:x86/vdso] x86, vdso: Instead of dummy functions, include < linux/spinlock_up.h>
2014-02-17 9:50 ` H. Peter Anvin
@ 2014-02-17 10:07 ` Stefani Seibold
0 siblings, 0 replies; 31+ messages in thread
From: Stefani Seibold @ 2014-02-17 10:07 UTC (permalink / raw)
To: H. Peter Anvin
Cc: mingo, linux-kernel, tglx, hpa, linux-tip-commits,
Andy Lutomirski, Andreas Brief, Martin Runge
Am Montag, den 17.02.2014, 01:50 -0800 schrieb H. Peter Anvin:
> On 02/17/2014 01:46 AM, Stefani Seibold wrote:
> > Am Montag, den 17.02.2014, 01:27 -0800 schrieb H. Peter Anvin:
> >> On 02/16/2014 11:42 PM, Stefani Seibold wrote:
> >>> I think for the first time it will be okay to kick out the
> >>> _ASM_X86_SPINLOCK_H hack and accept the C=1 warnings.
> >>>
> >>> At next step it is necessary to make the whole BUILD_VDSO32 path in
> >>> vclock_gettime.c independent from the kernel headers, only uapi/ should
> >>> be included.
> >>>
> >>> The use of cycle_t must be replaced with u64.
> >>>
> >>> We need a own copy of __native_read_tsc(), __iter_div_u64_rem, smp_rmb()
> >>> and cpu_relax().
> >>
> >> All of which are quite trivial.
> >>
> >>> For the non BUILD_VDSO32 path we must only move the #includes inside
> >>> this #ifndef BUILD_VDSO32
> >>
> >> Sorry, didn't quite follow that.
> >>
> >
> > The solution is quite simple: In case of a 32 bit VDSO for a 64 bit
> > kernel fake a 32 bit kernel configuration. Than everything is fine and
> > all kernel headers will compile without warnings or errors, also make
> > C=1 will give no complains.
> >
> > The arch/x86/vdso/vdso32/vclock_gettime.c will now look like:
> >
> > #define BUILD_VDSO32
> >
> > #ifdef CONFIG_X86_64
> >
> > /*
> > * in case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
> > * configuration
> > */
> > #undef CONFIG_64BIT
> > #undef CONFIG_X86_64
> > #undef CONFIG_ILLEGAL_POINTER_VALUE
> >
> > #define CONFIG_X86_32 1
> > #define CONFIG_PAGE_OFFSET 0
> > #define CONFIG_ILLEGAL_POINTER_VALUE 0
> >
> > #define BUILD_VDSO32_64
> >
> > #endif
> >
> > #include "../vclock_gettime.c"
> >
> > and the following modifications for arch/x86/include/asm/vgtod.h:
> >
> > #ifdef BUILD_VDSO32_64
> > typedef u64 gtod_long_t;
> > #else
> > typedef unsigned long gtod_long_t;
> > #endif
> >
> > I tested it and i see no side effects. What do you think?
> >
>
> Clever. It is still a hack of course, and it would be better to getting
> to the point where we don't include random kernel headers but only uapi
> headers plus special headers sanitized specifically for the vdso, but
> the above looks like a good intermediate hack.
>
Yes, but i think this is nearly impossible, because there must be
modified a lot of headers and nobody can predict the side effects.
- Stefani
^ permalink raw reply [flat|nested] 31+ messages in thread