* Linux 3.2.25
@ 2012-08-02 23:50 Ben Hutchings
2012-08-02 23:53 ` Ben Hutchings
0 siblings, 1 reply; 2+ messages in thread
From: Ben Hutchings @ 2012-08-02 23:50 UTC (permalink / raw)
To: linux-kernel, Andrew Morton, torvalds, stable; +Cc: lwn
[-- Attachment #1: Type: text/plain, Size: 11489 bytes --]
I'm announcing the release of the 3.2.25 kernel.
All users of the 3.2 kernel series should upgrade.
Like 3.0.39, this includes many fixes for mm performance problems,
thanks to Mel Gorman.
The updated 3.2.y git tree can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-3.2.y
and can be browsed at the normal kernel.org git web browser:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git
Ben.
------------
Makefile | 2 +-
arch/powerpc/include/asm/reg.h | 3 +-
arch/powerpc/kernel/ftrace.c | 12 +-
arch/s390/kernel/processor.c | 2 +
arch/s390/kernel/smp.c | 3 -
arch/x86/kernel/microcode_core.c | 31 +++--
arch/x86/pci/fixup.c | 17 +++
block/blk-core.c | 6 +-
block/blk-exec.c | 2 +-
block/blk-sysfs.c | 4 +-
block/blk-throttle.c | 4 +-
block/blk.h | 2 +-
drivers/acpi/ac.c | 4 +-
drivers/gpu/drm/nouveau/nva3_copy.fuc | 4 +-
drivers/gpu/drm/nouveau/nva3_copy.fuc.h | 94 +++++++++++++-
drivers/gpu/drm/nouveau/nvc0_copy.fuc.h | 87 ++++++++++++-
drivers/gpu/drm/radeon/atombios_dp.c | 10 +-
drivers/gpu/drm/radeon/radeon_connectors.c | 35 ++++--
drivers/gpu/drm/radeon/radeon_cursor.c | 8 +-
drivers/gpu/drm/radeon/radeon_object.c | 3 +-
drivers/iommu/amd_iommu.c | 10 +-
drivers/media/video/cx25821/cx25821-core.c | 3 -
drivers/media/video/cx25821/cx25821.h | 2 +-
drivers/mmc/host/sdhci-pci.c | 1 +
drivers/net/ethernet/realtek/r8169.c | 1 +
drivers/net/wireless/mwifiex/cfg80211.c | 4 +-
drivers/net/wireless/rt2x00/rt2800usb.c | 23 +++-
drivers/net/wireless/rtlwifi/rtl8192de/phy.c | 6 +-
drivers/scsi/hosts.c | 7 +-
drivers/scsi/libsas/sas_expander.c | 47 +++----
drivers/scsi/scsi.c | 8 +-
drivers/scsi/scsi_error.c | 14 +++
drivers/scsi/scsi_lib.c | 43 +++----
drivers/scsi/scsi_priv.h | 1 -
drivers/scsi/scsi_scan.c | 3 +
drivers/scsi/scsi_sysfs.c | 46 ++++---
drivers/target/iscsi/iscsi_target.c | 22 +---
drivers/target/iscsi/iscsi_target_core.h | 2 -
drivers/target/iscsi/iscsi_target_login.c | 60 +--------
drivers/target/target_core_cdb.c | 43 +++++--
drivers/target/target_core_transport.c | 10 ++
drivers/usb/core/devio.c | 10 +-
drivers/usb/gadget/u_ether.c | 12 +-
drivers/usb/serial/option.c | 8 +-
fs/btrfs/async-thread.c | 9 +-
fs/btrfs/disk-io.c | 5 +-
fs/cifs/cifssmb.c | 30 +++++
fs/ext4/balloc.c | 3 +-
fs/ext4/bitmap.c | 12 +-
fs/ext4/ext4.h | 6 +-
fs/ext4/ialloc.c | 3 +-
fs/ext4/inode.c | 41 ++++--
fs/ext4/resize.c | 5 +
fs/ext4/super.c | 174 ++++++++++++++++++--------
fs/hugetlbfs/inode.c | 3 +-
fs/locks.c | 6 +-
fs/nfs/internal.h | 2 +-
fs/nfs/write.c | 4 +-
fs/udf/super.c | 2 +-
include/linux/blkdev.h | 1 +
include/linux/cpu.h | 5 +-
include/linux/cpuset.h | 47 +++----
include/linux/fs.h | 11 +-
include/linux/init_task.h | 8 ++
include/linux/migrate.h | 23 +++-
include/linux/mmzone.h | 2 +
include/linux/sched.h | 3 +-
include/target/target_core_base.h | 1 +
kernel/cpuset.c | 43 ++-----
kernel/fork.c | 3 +
kernel/power/hibernate.c | 6 +
kernel/power/suspend.c | 3 +
kernel/sched.c | 86 +++++++++++--
kernel/sched_fair.c | 2 +-
kernel/time/tick-sched.c | 1 +
kernel/workqueue.c | 38 +++++-
mm/compaction.c | 4 +-
mm/filemap.c | 11 +-
mm/hugetlb.c | 13 +-
mm/memory-failure.c | 6 +-
mm/memory_hotplug.c | 2 +-
mm/mempolicy.c | 30 +++--
mm/migrate.c | 171 +++++++++++++++++--------
mm/page_alloc.c | 118 +++++++++++------
mm/slab.c | 13 +-
mm/slub.c | 40 +++---
mm/vmscan.c | 114 ++++++++++++++---
sound/pci/hda/patch_hdmi.c | 12 +-
sound/pci/hda/patch_realtek.c | 1 +
sound/soc/soc-dapm.c | 10 +-
90 files changed, 1263 insertions(+), 589 deletions(-)
Al Viro (1):
iscsi-target: Drop bogus struct file usage for iSCSI/SCTP
Alan Cox (1):
x86: Fix boot on Twinhead H12Y
Albert Pool (1):
rt2800usb: 2001:3c17 is an RT3370 device
Amitkumar Karwar (1):
mwifiex: correction in mcs index check
Andrew Bird (Sphere Systems) (1):
USB: option: Ignore ZTE (Vodafone) K3570/71 net interfaces
Bart Van Assche (2):
Fix device removal NULL pointer dereference
Avoid dangling pointer in scsi_requeue_command()
Ben Hutchings (1):
Linux 3.2.25
Bjørn Mork (1):
USB: option: add ZTE MF821D
Borislav Petkov (1):
x86, microcode: Sanitize per-cpu microcode reloading interface
Brian Foster (1):
ext4: don't let i_reserved_meta_blocks go negative
Chris Mason (1):
Btrfs: call the ordered free operation without any locks held
Dan Williams (4):
fix hot unplug vs async scan race
fix eh wakeup (scsi_schedule_eh vs scsi_restart_operations)
libsas: continue revalidation
libsas: fix sas_discover_devices return code handling
Daniel Drake (1):
mmc: sdhci-pci: CaFe has broken card detection
David Henningsson (1):
ALSA: hda - Add support for Realtek ALC282
Dylan Reid (1):
ALSA: hda - Turn on PIN_OUT from hdmi playback prepare.
Ezequiel Garcia (1):
cx25821: Remove bad strcpy to read-only char*
Forest Bond (1):
rtlwifi: rtl8192de: Fix phy-based version calculation
Hans de Goede (1):
usbdevfs: Correct amount of data copied to user in processcompl_compat
Heiko Carstens (1):
s390/idle: fix sequence handling vs cpu hotplug
Hugh Dickins (1):
mm: test PageSwapBacked in lumpy reclaim
J. Bruce Fields (1):
locks: fix checking of fcntl_setlease argument
Jan Kara (1):
udf: Improve table length check to avoid possible overflow
Jeff Layton (1):
cifs: when CONFIG_HIGHMEM is set, serialize the read/write kmaps
Jerome Glisse (4):
drm/radeon: fix bo creation retry path
drm/radeon: fix non revealent error message
drm/radeon: fix hotplug of DP to DVI|HDMI passive adapters (v2)
drm/radeon: on hotplug force link training to happen (v2)
Joerg Roedel (1):
iommu/amd: Fix hotplug with iommu=pt
Johannes Weiner (1):
mm: vmscan: convert global reclaim to per-memcg LRU lists
Joonsoo Kim (1):
mm: fix wrong argument of migrate_huge_pages() in soft_offline_huge_page()
Kevin Cernekee (1):
usb: gadget: Fix g_ether interface link status
Konstantin Khlebnikov (3):
vmscan: promote shared file mapped pages
vmscan: activate executable pages after first usage
mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma
Lan Tianyu (1):
ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check
Maarten Lankhorst (1):
nouveau: Fix alignment requirements on src and dst addresses
Mark Brown (1):
ASoC: dapm: Fix _PRE and _POST events for DAPM performance improvements
Mark Rustad (1):
Fix NULL dereferences in scsi_cmd_to_driver
Mel Gorman (10):
mm: reduce the amount of work done when updating min_free_kbytes
mm: compaction: allow compaction to isolate dirty pages
mm: compaction: determine if dirty pages can be migrated without blocking within ->migratepage
mm: page allocator: do not call direct reclaim for THP allocations while compaction is deferred
mm: compaction: make isolate_lru_page() filter-aware again
mm: compaction: introduce sync-light migration for use by compaction
mm: vmscan: when reclaiming for compaction, ensure there are sufficient free pages available
mm: vmscan: do not OOM if aborting reclaim to start compaction
mm: vmscan: check if reclaim should really abort even if compaction_ready() is true for one zone
cpuset: mm: reduce large amounts of memory barrier related damage v3
Michel Dänzer (1):
drm/radeon: Try harder to avoid HW cursor ending on a multiple of 128 columns.
Minchan Kim (1):
mm/vmscan.c: consider swap space when deciding whether to continue reclaim
Peter Zijlstra (2):
sched/nohz: Fix rq->cpu_load[] calculations
sched/nohz: Fix rq->cpu_load calculations some more
Roland Dreier (5):
target: Add generation of LOGICAL BLOCK ADDRESS OUT OF RANGE
target: Add range checking to UNMAP emulation
target: Fix reading of data length fields for UNMAP commands
target: Fix possible integer underflow in UNMAP emulation
target: Check number of unmap descriptors against our limit
Shuah Khan (1):
x86, microcode: microcode_core.c simple_strtoul cleanup
Srivatsa S. Bhat (1):
ftrace: Disable function tracing during suspend/resume and hibernation, again
Tejun Heo (2):
workqueue: perform cpu down operations from low priority cpu_notifier()
block: add blk_queue_dead()
Theodore Ts'o (3):
ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr
ext4: fix overhead calculation used by ext4_statfs()
ext4: undo ext4_calc_metadata_amount if we fail to claim space
Tiejun Chen (1):
powerpc: Add "memory" attribute for mfmsr()
Xose Vazquez Perez (2):
wireless: rt2x00: rt2800usb add more devices ids
wireless: rt2x00: rt2800usb more devices were identified
françois romieu (1):
r8169: RxConfig hack for the 8168evl.
roger blofeld (1):
powerpc/ftrace: Fix assembly trampoline register usage
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 828 bytes --]
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Linux 3.2.25
2012-08-02 23:50 Linux 3.2.25 Ben Hutchings
@ 2012-08-02 23:53 ` Ben Hutchings
0 siblings, 0 replies; 2+ messages in thread
From: Ben Hutchings @ 2012-08-02 23:53 UTC (permalink / raw)
To: linux-kernel; +Cc: Andrew Morton, torvalds, stable, lwn
[-- Attachment #1: Type: text/plain, Size: 142269 bytes --]
diff --git a/Makefile b/Makefile
index 80bb4fd..e13e4e7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 2
-SUBLEVEL = 24
+SUBLEVEL = 25
EXTRAVERSION =
NAME = Saber-toothed Squirrel
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 559da19..578e5a0 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1016,7 +1016,8 @@
/* Macros for setting and retrieving special purpose registers */
#ifndef __ASSEMBLY__
#define mfmsr() ({unsigned long rval; \
- asm volatile("mfmsr %0" : "=r" (rval)); rval;})
+ asm volatile("mfmsr %0" : "=r" (rval) : \
+ : "memory"); rval;})
#ifdef CONFIG_PPC_BOOK3S_64
#define __mtmsrd(v, l) asm volatile("mtmsrd %0," __stringify(l) \
: : "r" (v) : "memory")
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index bf99cfa..6324008 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -245,9 +245,9 @@ __ftrace_make_nop(struct module *mod,
/*
* On PPC32 the trampoline looks like:
- * 0x3d, 0x60, 0x00, 0x00 lis r11,sym@ha
- * 0x39, 0x6b, 0x00, 0x00 addi r11,r11,sym@l
- * 0x7d, 0x69, 0x03, 0xa6 mtctr r11
+ * 0x3d, 0x80, 0x00, 0x00 lis r12,sym@ha
+ * 0x39, 0x8c, 0x00, 0x00 addi r12,r12,sym@l
+ * 0x7d, 0x89, 0x03, 0xa6 mtctr r12
* 0x4e, 0x80, 0x04, 0x20 bctr
*/
@@ -262,9 +262,9 @@ __ftrace_make_nop(struct module *mod,
pr_devel(" %08x %08x ", jmp[0], jmp[1]);
/* verify that this is what we expect it to be */
- if (((jmp[0] & 0xffff0000) != 0x3d600000) ||
- ((jmp[1] & 0xffff0000) != 0x396b0000) ||
- (jmp[2] != 0x7d6903a6) ||
+ if (((jmp[0] & 0xffff0000) != 0x3d800000) ||
+ ((jmp[1] & 0xffff0000) != 0x398c0000) ||
+ (jmp[2] != 0x7d8903a6) ||
(jmp[3] != 0x4e800420)) {
printk(KERN_ERR "Not a trampoline\n");
return -EINVAL;
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 6e0073e..07c7bf4 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -26,12 +26,14 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
void __cpuinit cpu_init(void)
{
struct cpuid *id = &per_cpu(cpu_id, smp_processor_id());
+ struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
get_cpu_id(id);
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
+ memset(idle, 0, sizeof(*idle));
}
/*
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 3ea8728..1df64a8 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1020,14 +1020,11 @@ static int __cpuinit smp_cpu_notify(struct notifier_block *self,
unsigned int cpu = (unsigned int)(long)hcpu;
struct cpu *c = &per_cpu(cpu_devices, cpu);
struct sys_device *s = &c->sysdev;
- struct s390_idle_data *idle;
int err = 0;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
- idle = &per_cpu(s390_idle, cpu);
- memset(idle, 0, sizeof(struct s390_idle_data));
err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
break;
case CPU_DEAD:
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 563a09d..29c95d7 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -297,20 +297,31 @@ static ssize_t reload_store(struct sys_device *dev,
const char *buf, size_t size)
{
unsigned long val;
- int cpu = dev->id;
- int ret = 0;
- char *end;
+ int cpu;
+ ssize_t ret = 0, tmp_ret;
- val = simple_strtoul(buf, &end, 0);
- if (end == buf)
+ /* allow reload only from the BSP */
+ if (boot_cpu_data.cpu_index != dev->id)
return -EINVAL;
- if (val == 1) {
- get_online_cpus();
- if (cpu_online(cpu))
- ret = reload_for_cpu(cpu);
- put_online_cpus();
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ if (val != 1)
+ return size;
+
+ get_online_cpus();
+ for_each_online_cpu(cpu) {
+ tmp_ret = reload_for_cpu(cpu);
+ if (tmp_ret != 0)
+ pr_warn("Error reloading microcode on CPU %d\n", cpu);
+
+ /* save retval of the first encountered reload error */
+ if (!ret)
+ ret = tmp_ret;
}
+ put_online_cpus();
if (!ret)
ret = size;
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 6dd8955..0951b81 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -521,3 +521,20 @@ static void sb600_disable_hpet_bar(struct pci_dev *dev)
}
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, 0x4385, sb600_disable_hpet_bar);
+
+/*
+ * Twinhead H12Y needs us to block out a region otherwise we map devices
+ * there and any access kills the box.
+ *
+ * See: https://bugzilla.kernel.org/show_bug.cgi?id=10231
+ *
+ * Match off the LPC and svid/sdid (older kernels lose the bridge subvendor)
+ */
+static void __devinit twinhead_reserve_killing_zone(struct pci_dev *dev)
+{
+ if (dev->subsystem_vendor == 0x14FF && dev->subsystem_device == 0xA003) {
+ pr_info("Reserving memory on Twinhead H12Y\n");
+ request_mem_region(0xFFB00000, 0x100000, "twinhead");
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x27B9, twinhead_reserve_killing_zone);
diff --git a/block/blk-core.c b/block/blk-core.c
index 15de223..49d9e91 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -607,7 +607,7 @@ EXPORT_SYMBOL(blk_init_allocated_queue);
int blk_get_queue(struct request_queue *q)
{
- if (likely(!test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
+ if (likely(!blk_queue_dead(q))) {
kobject_get(&q->kobj);
return 0;
}
@@ -754,7 +754,7 @@ static struct request *get_request(struct request_queue *q, int rw_flags,
const bool is_sync = rw_is_sync(rw_flags) != 0;
int may_queue;
- if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
+ if (unlikely(blk_queue_dead(q)))
return NULL;
may_queue = elv_may_queue(q, rw_flags);
@@ -874,7 +874,7 @@ static struct request *get_request_wait(struct request_queue *q, int rw_flags,
struct io_context *ioc;
struct request_list *rl = &q->rq;
- if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
+ if (unlikely(blk_queue_dead(q)))
return NULL;
prepare_to_wait_exclusive(&rl->wait[is_sync], &wait,
diff --git a/block/blk-exec.c b/block/blk-exec.c
index a1ebceb..6053285 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -50,7 +50,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
{
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
- if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
+ if (unlikely(blk_queue_dead(q))) {
rq->errors = -ENXIO;
if (rq->end_io)
rq->end_io(rq, rq->errors);
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index e7f9f65..f0b2ca8 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -425,7 +425,7 @@ queue_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
if (!entry->show)
return -EIO;
mutex_lock(&q->sysfs_lock);
- if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)) {
+ if (blk_queue_dead(q)) {
mutex_unlock(&q->sysfs_lock);
return -ENOENT;
}
@@ -447,7 +447,7 @@ queue_attr_store(struct kobject *kobj, struct attribute *attr,
q = container_of(kobj, struct request_queue, kobj);
mutex_lock(&q->sysfs_lock);
- if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)) {
+ if (blk_queue_dead(q)) {
mutex_unlock(&q->sysfs_lock);
return -ENOENT;
}
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 4553245..5eed6a7 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -310,7 +310,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td)
struct request_queue *q = td->queue;
/* no throttling for dead queue */
- if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
+ if (unlikely(blk_queue_dead(q)))
return NULL;
rcu_read_lock();
@@ -335,7 +335,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td)
spin_lock_irq(q->queue_lock);
/* Make sure @q is still alive */
- if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
+ if (unlikely(blk_queue_dead(q))) {
kfree(tg);
return NULL;
}
diff --git a/block/blk.h b/block/blk.h
index 3f6551b..e38691d 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -85,7 +85,7 @@ static inline struct request *__elv_next_request(struct request_queue *q)
q->flush_queue_delayed = 1;
return NULL;
}
- if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags) ||
+ if (unlikely(blk_queue_dead(q)) ||
!q->elevator->ops->elevator_dispatch_fn(q, 0))
return NULL;
}
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 6512b20..d1fcbc0 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -292,7 +292,9 @@ static int acpi_ac_add(struct acpi_device *device)
ac->charger.properties = ac_props;
ac->charger.num_properties = ARRAY_SIZE(ac_props);
ac->charger.get_property = get_ac_property;
- power_supply_register(&ac->device->dev, &ac->charger);
+ result = power_supply_register(&ac->device->dev, &ac->charger);
+ if (result)
+ goto end;
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
diff --git a/drivers/gpu/drm/nouveau/nva3_copy.fuc b/drivers/gpu/drm/nouveau/nva3_copy.fuc
index eaf35f8..d894731 100644
--- a/drivers/gpu/drm/nouveau/nva3_copy.fuc
+++ b/drivers/gpu/drm/nouveau/nva3_copy.fuc
@@ -118,9 +118,9 @@ dispatch_dma:
// mthd 0x030c-0x0340, various stuff
.b16 0xc3 14
.b32 ctx_src_address_high ~0x000000ff
-.b32 ctx_src_address_low ~0xfffffff0
+.b32 ctx_src_address_low ~0xffffffff
.b32 ctx_dst_address_high ~0x000000ff
-.b32 ctx_dst_address_low ~0xfffffff0
+.b32 ctx_dst_address_low ~0xffffffff
.b32 ctx_src_pitch ~0x0007ffff
.b32 ctx_dst_pitch ~0x0007ffff
.b32 ctx_xcnt ~0x0000ffff
diff --git a/drivers/gpu/drm/nouveau/nva3_copy.fuc.h b/drivers/gpu/drm/nouveau/nva3_copy.fuc.h
index 2731de2..e2a0e88 100644
--- a/drivers/gpu/drm/nouveau/nva3_copy.fuc.h
+++ b/drivers/gpu/drm/nouveau/nva3_copy.fuc.h
@@ -1,37 +1,72 @@
-uint32_t nva3_pcopy_data[] = {
+u32 nva3_pcopy_data[] = {
+/* 0x0000: ctx_object */
0x00000000,
+/* 0x0004: ctx_dma */
+/* 0x0004: ctx_dma_query */
0x00000000,
+/* 0x0008: ctx_dma_src */
0x00000000,
+/* 0x000c: ctx_dma_dst */
0x00000000,
+/* 0x0010: ctx_query_address_high */
0x00000000,
+/* 0x0014: ctx_query_address_low */
0x00000000,
+/* 0x0018: ctx_query_counter */
0x00000000,
+/* 0x001c: ctx_src_address_high */
0x00000000,
+/* 0x0020: ctx_src_address_low */
0x00000000,
+/* 0x0024: ctx_src_pitch */
0x00000000,
+/* 0x0028: ctx_src_tile_mode */
0x00000000,
+/* 0x002c: ctx_src_xsize */
0x00000000,
+/* 0x0030: ctx_src_ysize */
0x00000000,
+/* 0x0034: ctx_src_zsize */
0x00000000,
+/* 0x0038: ctx_src_zoff */
0x00000000,
+/* 0x003c: ctx_src_xoff */
0x00000000,
+/* 0x0040: ctx_src_yoff */
0x00000000,
+/* 0x0044: ctx_src_cpp */
0x00000000,
+/* 0x0048: ctx_dst_address_high */
0x00000000,
+/* 0x004c: ctx_dst_address_low */
0x00000000,
+/* 0x0050: ctx_dst_pitch */
0x00000000,
+/* 0x0054: ctx_dst_tile_mode */
0x00000000,
+/* 0x0058: ctx_dst_xsize */
0x00000000,
+/* 0x005c: ctx_dst_ysize */
0x00000000,
+/* 0x0060: ctx_dst_zsize */
0x00000000,
+/* 0x0064: ctx_dst_zoff */
0x00000000,
+/* 0x0068: ctx_dst_xoff */
0x00000000,
+/* 0x006c: ctx_dst_yoff */
0x00000000,
+/* 0x0070: ctx_dst_cpp */
0x00000000,
+/* 0x0074: ctx_format */
0x00000000,
+/* 0x0078: ctx_swz_const0 */
0x00000000,
+/* 0x007c: ctx_swz_const1 */
0x00000000,
+/* 0x0080: ctx_xcnt */
0x00000000,
+/* 0x0084: ctx_ycnt */
0x00000000,
0x00000000,
0x00000000,
@@ -63,6 +98,7 @@ uint32_t nva3_pcopy_data[] = {
0x00000000,
0x00000000,
0x00000000,
+/* 0x0100: dispatch_table */
0x00010000,
0x00000000,
0x00000000,
@@ -73,6 +109,7 @@ uint32_t nva3_pcopy_data[] = {
0x00010162,
0x00000000,
0x00030060,
+/* 0x0128: dispatch_dma */
0x00010170,
0x00000000,
0x00010170,
@@ -118,11 +155,11 @@ uint32_t nva3_pcopy_data[] = {
0x0000001c,
0xffffff00,
0x00000020,
- 0x0000000f,
+ 0x00000000,
0x00000048,
0xffffff00,
0x0000004c,
- 0x0000000f,
+ 0x00000000,
0x00000024,
0xfff80000,
0x00000050,
@@ -146,7 +183,8 @@ uint32_t nva3_pcopy_data[] = {
0x00000800,
};
-uint32_t nva3_pcopy_code[] = {
+u32 nva3_pcopy_code[] = {
+/* 0x0000: main */
0x04fe04bd,
0x3517f000,
0xf10010fe,
@@ -158,23 +196,31 @@ uint32_t nva3_pcopy_code[] = {
0x17f11031,
0x27f01200,
0x0012d003,
+/* 0x002f: spin */
0xf40031f4,
0x0ef40028,
+/* 0x0035: ih */
0x8001cffd,
0xf40812c4,
0x21f4060b,
+/* 0x0041: ih_no_chsw */
0x0412c472,
0xf4060bf4,
+/* 0x004a: ih_no_cmd */
0x11c4c321,
0x4001d00c,
+/* 0x0052: swctx */
0x47f101f8,
0x4bfe7700,
0x0007fe00,
0xf00204b9,
0x01f40643,
0x0604fa09,
+/* 0x006b: swctx_load */
0xfa060ef4,
+/* 0x006e: swctx_done */
0x03f80504,
+/* 0x0072: chsw */
0x27f100f8,
0x23cf1400,
0x1e3fc800,
@@ -183,18 +229,22 @@ uint32_t nva3_pcopy_code[] = {
0x1e3af052,
0xf00023d0,
0x24d00147,
+/* 0x0093: chsw_no_unload */
0xcf00f880,
0x3dc84023,
0x220bf41e,
0xf40131f4,
0x57f05221,
0x0367f004,
+/* 0x00a8: chsw_load_ctx_dma */
0xa07856bc,
0xb6018068,
0x87d00884,
0x0162b600,
+/* 0x00bb: chsw_finish_load */
0xf0f018f4,
0x23d00237,
+/* 0x00c3: dispatch */
0xf100f880,
0xcf190037,
0x33cf4032,
@@ -202,6 +252,7 @@ uint32_t nva3_pcopy_code[] = {
0x1024b607,
0x010057f1,
0x74bd64bd,
+/* 0x00dc: dispatch_loop */
0x58005658,
0x50b60157,
0x0446b804,
@@ -211,6 +262,7 @@ uint32_t nva3_pcopy_code[] = {
0xb60276bb,
0x57bb0374,
0xdf0ef400,
+/* 0x0100: dispatch_valid_mthd */
0xb60246bb,
0x45bb0344,
0x01459800,
@@ -220,31 +272,41 @@ uint32_t nva3_pcopy_code[] = {
0xb0014658,
0x1bf40064,
0x00538009,
+/* 0x0127: dispatch_cmd */
0xf4300ef4,
0x55f90132,
0xf40c01f4,
+/* 0x0132: dispatch_invalid_bitfield */
0x25f0250e,
+/* 0x0135: dispatch_illegal_mthd */
0x0125f002,
+/* 0x0138: dispatch_error */
0x100047f1,
0xd00042d0,
0x27f04043,
0x0002d040,
+/* 0x0148: hostirq_wait */
0xf08002cf,
0x24b04024,
0xf71bf400,
+/* 0x0154: dispatch_done */
0x1d0027f1,
0xd00137f0,
0x00f80023,
+/* 0x0160: cmd_nop */
+/* 0x0162: cmd_pm_trigger */
0x27f100f8,
0x34bd2200,
0xd00233f0,
0x00f80023,
+/* 0x0170: cmd_dma */
0x012842b7,
0xf00145b6,
0x43801e39,
0x0040b701,
0x0644b606,
0xf80043d0,
+/* 0x0189: cmd_exec_set_format */
0xf030f400,
0xb00001b0,
0x01b00101,
@@ -256,20 +318,26 @@ uint32_t nva3_pcopy_code[] = {
0x70b63847,
0x0232f401,
0x94bd84bd,
+/* 0x01b4: ncomp_loop */
0xb60f4ac4,
0xb4bd0445,
+/* 0x01bc: bpc_loop */
0xf404a430,
0xa5ff0f18,
0x00cbbbc0,
0xf40231f4,
+/* 0x01ce: cmp_c0 */
0x1bf4220e,
0x10c7f00c,
0xf400cbbb,
+/* 0x01da: cmp_c1 */
0xa430160e,
0x0c18f406,
0xbb14c7f0,
0x0ef400cb,
+/* 0x01e9: cmp_zero */
0x80c7f107,
+/* 0x01ed: bpc_next */
0x01c83800,
0xb60180b6,
0xb5b801b0,
@@ -280,6 +348,7 @@ uint32_t nva3_pcopy_code[] = {
0x98110680,
0x68fd2008,
0x0502f400,
+/* 0x0216: dst_xcnt */
0x75fd64bd,
0x1c078000,
0xf10078fd,
@@ -304,6 +373,7 @@ uint32_t nva3_pcopy_code[] = {
0x980056d0,
0x56d01f06,
0x1030f440,
+/* 0x0276: cmd_exec_set_surface_tiled */
0x579800f8,
0x6879c70a,
0xb66478c7,
@@ -311,9 +381,11 @@ uint32_t nva3_pcopy_code[] = {
0x0e76b060,
0xf0091bf4,
0x0ef40477,
+/* 0x0291: xtile64 */
0x027cf00f,
0xfd1170b6,
0x77f00947,
+/* 0x029d: xtileok */
0x0f5a9806,
0xfd115b98,
0xb7f000ab,
@@ -371,6 +443,7 @@ uint32_t nva3_pcopy_code[] = {
0x67d00600,
0x0060b700,
0x0068d004,
+/* 0x0382: cmd_exec_set_surface_linear */
0x6cf000f8,
0x0260b702,
0x0864b602,
@@ -381,13 +454,16 @@ uint32_t nva3_pcopy_code[] = {
0xb70067d0,
0x98040060,
0x67d00957,
+/* 0x03ab: cmd_exec_wait */
0xf900f800,
0xf110f900,
0xb6080007,
+/* 0x03b6: loop */
0x01cf0604,
0x0114f000,
0xfcfa1bf4,
0xf800fc10,
+/* 0x03c5: cmd_exec_query */
0x0d34c800,
0xf5701bf4,
0xf103ab21,
@@ -417,6 +493,7 @@ uint32_t nva3_pcopy_code[] = {
0x47f10153,
0x44b60800,
0x0045d006,
+/* 0x0438: query_counter */
0x03ab21f5,
0x080c47f1,
0x980644b6,
@@ -439,11 +516,13 @@ uint32_t nva3_pcopy_code[] = {
0x47f10153,
0x44b60800,
0x0045d006,
+/* 0x0492: cmd_exec */
0x21f500f8,
0x3fc803ab,
0x0e0bf400,
0x018921f5,
0x020047f1,
+/* 0x04a7: cmd_exec_no_format */
0xf11e0ef4,
0xb6081067,
0x77f00664,
@@ -451,19 +530,24 @@ uint32_t nva3_pcopy_code[] = {
0x981c0780,
0x67d02007,
0x4067d000,
+/* 0x04c2: cmd_exec_init_src_surface */
0x32f444bd,
0xc854bd02,
0x0bf4043f,
0x8221f50a,
0x0a0ef403,
+/* 0x04d4: src_tiled */
0x027621f5,
+/* 0x04db: cmd_exec_init_dst_surface */
0xf40749f0,
0x57f00231,
0x083fc82c,
0xf50a0bf4,
0xf4038221,
+/* 0x04ee: dst_tiled */
0x21f50a0e,
0x49f00276,
+/* 0x04f5: cmd_exec_kick */
0x0057f108,
0x0654b608,
0xd0210698,
@@ -473,6 +557,8 @@ uint32_t nva3_pcopy_code[] = {
0xc80054d0,
0x0bf40c3f,
0xc521f507,
+/* 0x0519: cmd_exec_done */
+/* 0x051b: cmd_wrcache_flush */
0xf100f803,
0xbd220027,
0x0133f034,
diff --git a/drivers/gpu/drm/nouveau/nvc0_copy.fuc.h b/drivers/gpu/drm/nouveau/nvc0_copy.fuc.h
index 4199038..9e87036 100644
--- a/drivers/gpu/drm/nouveau/nvc0_copy.fuc.h
+++ b/drivers/gpu/drm/nouveau/nvc0_copy.fuc.h
@@ -1,34 +1,65 @@
-uint32_t nvc0_pcopy_data[] = {
+u32 nvc0_pcopy_data[] = {
+/* 0x0000: ctx_object */
0x00000000,
+/* 0x0004: ctx_query_address_high */
0x00000000,
+/* 0x0008: ctx_query_address_low */
0x00000000,
+/* 0x000c: ctx_query_counter */
0x00000000,
+/* 0x0010: ctx_src_address_high */
0x00000000,
+/* 0x0014: ctx_src_address_low */
0x00000000,
+/* 0x0018: ctx_src_pitch */
0x00000000,
+/* 0x001c: ctx_src_tile_mode */
0x00000000,
+/* 0x0020: ctx_src_xsize */
0x00000000,
+/* 0x0024: ctx_src_ysize */
0x00000000,
+/* 0x0028: ctx_src_zsize */
0x00000000,
+/* 0x002c: ctx_src_zoff */
0x00000000,
+/* 0x0030: ctx_src_xoff */
0x00000000,
+/* 0x0034: ctx_src_yoff */
0x00000000,
+/* 0x0038: ctx_src_cpp */
0x00000000,
+/* 0x003c: ctx_dst_address_high */
0x00000000,
+/* 0x0040: ctx_dst_address_low */
0x00000000,
+/* 0x0044: ctx_dst_pitch */
0x00000000,
+/* 0x0048: ctx_dst_tile_mode */
0x00000000,
+/* 0x004c: ctx_dst_xsize */
0x00000000,
+/* 0x0050: ctx_dst_ysize */
0x00000000,
+/* 0x0054: ctx_dst_zsize */
0x00000000,
+/* 0x0058: ctx_dst_zoff */
0x00000000,
+/* 0x005c: ctx_dst_xoff */
0x00000000,
+/* 0x0060: ctx_dst_yoff */
0x00000000,
+/* 0x0064: ctx_dst_cpp */
0x00000000,
+/* 0x0068: ctx_format */
0x00000000,
+/* 0x006c: ctx_swz_const0 */
0x00000000,
+/* 0x0070: ctx_swz_const1 */
0x00000000,
+/* 0x0074: ctx_xcnt */
0x00000000,
+/* 0x0078: ctx_ycnt */
0x00000000,
0x00000000,
0x00000000,
@@ -63,6 +94,7 @@ uint32_t nvc0_pcopy_data[] = {
0x00000000,
0x00000000,
0x00000000,
+/* 0x0100: dispatch_table */
0x00010000,
0x00000000,
0x00000000,
@@ -111,11 +143,11 @@ uint32_t nvc0_pcopy_data[] = {
0x00000010,
0xffffff00,
0x00000014,
- 0x0000000f,
+ 0x00000000,
0x0000003c,
0xffffff00,
0x00000040,
- 0x0000000f,
+ 0x00000000,
0x00000018,
0xfff80000,
0x00000044,
@@ -139,7 +171,8 @@ uint32_t nvc0_pcopy_data[] = {
0x00000800,
};
-uint32_t nvc0_pcopy_code[] = {
+u32 nvc0_pcopy_code[] = {
+/* 0x0000: main */
0x04fe04bd,
0x3517f000,
0xf10010fe,
@@ -151,15 +184,20 @@ uint32_t nvc0_pcopy_code[] = {
0x17f11031,
0x27f01200,
0x0012d003,
+/* 0x002f: spin */
0xf40031f4,
0x0ef40028,
+/* 0x0035: ih */
0x8001cffd,
0xf40812c4,
0x21f4060b,
+/* 0x0041: ih_no_chsw */
0x0412c4ca,
0xf5070bf4,
+/* 0x004b: ih_no_cmd */
0xc4010221,
0x01d00c11,
+/* 0x0053: swctx */
0xf101f840,
0xfe770047,
0x47f1004b,
@@ -188,8 +226,11 @@ uint32_t nvc0_pcopy_code[] = {
0xf00204b9,
0x01f40643,
0x0604fa09,
+/* 0x00c3: swctx_load */
0xfa060ef4,
+/* 0x00c6: swctx_done */
0x03f80504,
+/* 0x00ca: chsw */
0x27f100f8,
0x23cf1400,
0x1e3fc800,
@@ -198,18 +239,22 @@ uint32_t nvc0_pcopy_code[] = {
0x1e3af053,
0xf00023d0,
0x24d00147,
+/* 0x00eb: chsw_no_unload */
0xcf00f880,
0x3dc84023,
0x090bf41e,
0xf40131f4,
+/* 0x00fa: chsw_finish_load */
0x37f05321,
0x8023d002,
+/* 0x0102: dispatch */
0x37f100f8,
0x32cf1900,
0x0033cf40,
0x07ff24e4,
0xf11024b6,
0xbd010057,
+/* 0x011b: dispatch_loop */
0x5874bd64,
0x57580056,
0x0450b601,
@@ -219,6 +264,7 @@ uint32_t nvc0_pcopy_code[] = {
0xbb0f08f4,
0x74b60276,
0x0057bb03,
+/* 0x013f: dispatch_valid_mthd */
0xbbdf0ef4,
0x44b60246,
0x0045bb03,
@@ -229,24 +275,33 @@ uint32_t nvc0_pcopy_code[] = {
0x64b00146,
0x091bf400,
0xf4005380,
+/* 0x0166: dispatch_cmd */
0x32f4300e,
0xf455f901,
0x0ef40c01,
+/* 0x0171: dispatch_invalid_bitfield */
0x0225f025,
+/* 0x0174: dispatch_illegal_mthd */
+/* 0x0177: dispatch_error */
0xf10125f0,
0xd0100047,
0x43d00042,
0x4027f040,
+/* 0x0187: hostirq_wait */
0xcf0002d0,
0x24f08002,
0x0024b040,
+/* 0x0193: dispatch_done */
0xf1f71bf4,
0xf01d0027,
0x23d00137,
+/* 0x019f: cmd_nop */
0xf800f800,
+/* 0x01a1: cmd_pm_trigger */
0x0027f100,
0xf034bd22,
0x23d00233,
+/* 0x01af: cmd_exec_set_format */
0xf400f800,
0x01b0f030,
0x0101b000,
@@ -258,20 +313,26 @@ uint32_t nvc0_pcopy_code[] = {
0x3847c701,
0xf40170b6,
0x84bd0232,
+/* 0x01da: ncomp_loop */
0x4ac494bd,
0x0445b60f,
+/* 0x01e2: bpc_loop */
0xa430b4bd,
0x0f18f404,
0xbbc0a5ff,
0x31f400cb,
0x220ef402,
+/* 0x01f4: cmp_c0 */
0xf00c1bf4,
0xcbbb10c7,
0x160ef400,
+/* 0x0200: cmp_c1 */
0xf406a430,
0xc7f00c18,
0x00cbbb14,
+/* 0x020f: cmp_zero */
0xf1070ef4,
+/* 0x0213: bpc_next */
0x380080c7,
0x80b601c8,
0x01b0b601,
@@ -283,6 +344,7 @@ uint32_t nvc0_pcopy_code[] = {
0x1d08980e,
0xf40068fd,
0x64bd0502,
+/* 0x023c: dst_xcnt */
0x800075fd,
0x78fd1907,
0x1057f100,
@@ -307,15 +369,18 @@ uint32_t nvc0_pcopy_code[] = {
0x1c069800,
0xf44056d0,
0x00f81030,
+/* 0x029c: cmd_exec_set_surface_tiled */
0xc7075798,
0x78c76879,
0x0380b664,
0xb06077c7,
0x1bf40e76,
0x0477f009,
+/* 0x02b7: xtile64 */
0xf00f0ef4,
0x70b6027c,
0x0947fd11,
+/* 0x02c3: xtileok */
0x980677f0,
0x5b980c5a,
0x00abfd0e,
@@ -374,6 +439,7 @@ uint32_t nvc0_pcopy_code[] = {
0xb70067d0,
0xd0040060,
0x00f80068,
+/* 0x03a8: cmd_exec_set_surface_linear */
0xb7026cf0,
0xb6020260,
0x57980864,
@@ -384,12 +450,15 @@ uint32_t nvc0_pcopy_code[] = {
0x0060b700,
0x06579804,
0xf80067d0,
+/* 0x03d1: cmd_exec_wait */
0xf900f900,
0x0007f110,
0x0604b608,
+/* 0x03dc: loop */
0xf00001cf,
0x1bf40114,
0xfc10fcfa,
+/* 0x03eb: cmd_exec_query */
0xc800f800,
0x1bf40d34,
0xd121f570,
@@ -419,6 +488,7 @@ uint32_t nvc0_pcopy_code[] = {
0x0153f026,
0x080047f1,
0xd00644b6,
+/* 0x045e: query_counter */
0x21f50045,
0x47f103d1,
0x44b6080c,
@@ -442,11 +512,13 @@ uint32_t nvc0_pcopy_code[] = {
0x080047f1,
0xd00644b6,
0x00f80045,
+/* 0x04b8: cmd_exec */
0x03d121f5,
0xf4003fc8,
0x21f50e0b,
0x47f101af,
0x0ef40200,
+/* 0x04cd: cmd_exec_no_format */
0x1067f11e,
0x0664b608,
0x800177f0,
@@ -454,18 +526,23 @@ uint32_t nvc0_pcopy_code[] = {
0x1d079819,
0xd00067d0,
0x44bd4067,
+/* 0x04e8: cmd_exec_init_src_surface */
0xbd0232f4,
0x043fc854,
0xf50a0bf4,
0xf403a821,
+/* 0x04fa: src_tiled */
0x21f50a0e,
0x49f0029c,
+/* 0x0501: cmd_exec_init_dst_surface */
0x0231f407,
0xc82c57f0,
0x0bf4083f,
0xa821f50a,
0x0a0ef403,
+/* 0x0514: dst_tiled */
0x029c21f5,
+/* 0x051b: cmd_exec_kick */
0xf10849f0,
0xb6080057,
0x06980654,
@@ -475,7 +552,9 @@ uint32_t nvc0_pcopy_code[] = {
0x54d00546,
0x0c3fc800,
0xf5070bf4,
+/* 0x053f: cmd_exec_done */
0xf803eb21,
+/* 0x0541: cmd_wrcache_flush */
0x0027f100,
0xf034bd22,
0x23d00133,
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 552b436..3254d51 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -22,6 +22,7 @@
*
* Authors: Dave Airlie
* Alex Deucher
+ * Jerome Glisse
*/
#include "drmP.h"
#include "radeon_drm.h"
@@ -634,7 +635,6 @@ static bool radeon_dp_get_link_status(struct radeon_connector *radeon_connector,
ret = radeon_dp_aux_native_read(radeon_connector, DP_LANE0_1_STATUS,
link_status, DP_LINK_STATUS_SIZE, 100);
if (ret <= 0) {
- DRM_ERROR("displayport link status failed\n");
return false;
}
@@ -812,8 +812,10 @@ static int radeon_dp_link_train_cr(struct radeon_dp_link_train_info *dp_info)
else
mdelay(dp_info->rd_interval * 4);
- if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status))
+ if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status)) {
+ DRM_ERROR("displayport link status failed\n");
break;
+ }
if (dp_clock_recovery_ok(dp_info->link_status, dp_info->dp_lane_count)) {
clock_recovery = true;
@@ -875,8 +877,10 @@ static int radeon_dp_link_train_ce(struct radeon_dp_link_train_info *dp_info)
else
mdelay(dp_info->rd_interval * 4);
- if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status))
+ if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status)) {
+ DRM_ERROR("displayport link status failed\n");
break;
+ }
if (dp_channel_eq_ok(dp_info->link_status, dp_info->dp_lane_count)) {
channel_eq = true;
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 4a4493f..87d494d 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -64,14 +64,33 @@ void radeon_connector_hotplug(struct drm_connector *connector)
/* just deal with DP (not eDP) here. */
if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
- int saved_dpms = connector->dpms;
-
- /* Only turn off the display it it's physically disconnected */
- if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
- else if (radeon_dp_needs_link_train(radeon_connector))
- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
- connector->dpms = saved_dpms;
+ struct radeon_connector_atom_dig *dig_connector =
+ radeon_connector->con_priv;
+
+ /* if existing sink type was not DP no need to retrain */
+ if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT)
+ return;
+
+ /* first get sink type as it may be reset after (un)plug */
+ dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector);
+ /* don't do anything if sink is not display port, i.e.,
+ * passive dp->(dvi|hdmi) adaptor
+ */
+ if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
+ int saved_dpms = connector->dpms;
+ /* Only turn off the display if it's physically disconnected */
+ if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ } else if (radeon_dp_needs_link_train(radeon_connector)) {
+ /* set it to OFF so that drm_helper_connector_dpms()
+ * won't return immediately since the current state
+ * is ON at this point.
+ */
+ connector->dpms = DRM_MODE_DPMS_OFF;
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+ }
+ connector->dpms = saved_dpms;
+ }
}
}
diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
index 986d608..2132109 100644
--- a/drivers/gpu/drm/radeon/radeon_cursor.c
+++ b/drivers/gpu/drm/radeon/radeon_cursor.c
@@ -257,8 +257,14 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc,
if (!(cursor_end & 0x7f))
w--;
}
- if (w <= 0)
+ if (w <= 0) {
w = 1;
+ cursor_end = x - xorigin + w;
+ if (!(cursor_end & 0x7f)) {
+ x--;
+ WARN_ON_ONCE(x < 0);
+ }
+ }
}
}
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index f3ae607..39497c7 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -117,7 +117,6 @@ int radeon_bo_create(struct radeon_device *rdev,
return -ENOMEM;
}
-retry:
bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
if (bo == NULL)
return -ENOMEM;
@@ -130,6 +129,8 @@ retry:
bo->gem_base.driver_private = NULL;
bo->surface_reg = -1;
INIT_LIST_HEAD(&bo->list);
+
+retry:
radeon_ttm_placement_from_domain(bo, domain);
/* Kernel allocation are uninterruptible */
mutex_lock(&rdev->vram_mutex);
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index a1b8caa..0f074e0 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1865,6 +1865,11 @@ static int device_change_notifier(struct notifier_block *nb,
iommu_init_device(dev);
+ if (iommu_pass_through) {
+ attach_device(dev, pt_domain);
+ break;
+ }
+
domain = domain_for_device(dev);
/* allocate a protection domain if a device is added */
@@ -1880,10 +1885,7 @@ static int device_change_notifier(struct notifier_block *nb,
list_add_tail(&dma_domain->list, &iommu_pd_list);
spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
- if (!iommu_pass_through)
- dev->archdata.dma_ops = &amd_iommu_dma_ops;
- else
- dev->archdata.dma_ops = &nommu_dma_ops;
+ dev->archdata.dma_ops = &amd_iommu_dma_ops;
break;
case BUS_NOTIFY_DEL_DEVICE:
diff --git a/drivers/media/video/cx25821/cx25821-core.c b/drivers/media/video/cx25821/cx25821-core.c
index a7fa38f..e572ce5 100644
--- a/drivers/media/video/cx25821/cx25821-core.c
+++ b/drivers/media/video/cx25821/cx25821-core.c
@@ -914,9 +914,6 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
list_add_tail(&dev->devlist, &cx25821_devlist);
mutex_unlock(&cx25821_devlist_mutex);
- strcpy(cx25821_boards[UNKNOWN_BOARD].name, "unknown");
- strcpy(cx25821_boards[CX25821_BOARD].name, "cx25821");
-
if (dev->pci->device != 0x8210) {
pr_info("%s(): Exiting. Incorrect Hardware device = 0x%02x\n",
__func__, dev->pci->device);
diff --git a/drivers/media/video/cx25821/cx25821.h b/drivers/media/video/cx25821/cx25821.h
index 2d2d009..bf54360 100644
--- a/drivers/media/video/cx25821/cx25821.h
+++ b/drivers/media/video/cx25821/cx25821.h
@@ -187,7 +187,7 @@ enum port {
};
struct cx25821_board {
- char *name;
+ const char *name;
enum port porta;
enum port portb;
enum port portc;
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 6878a94..83b51b5 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -148,6 +148,7 @@ static const struct sdhci_pci_fixes sdhci_ene_714 = {
static const struct sdhci_pci_fixes sdhci_cafe = {
.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
SDHCI_QUIRK_NO_BUSY_IRQ |
+ SDHCI_QUIRK_BROKEN_CARD_DETECTION |
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
};
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 9e61d6b..ed1be8a 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -3770,6 +3770,7 @@ static void rtl_init_rxcfg(struct rtl8169_private *tp)
case RTL_GIGA_MAC_VER_22:
case RTL_GIGA_MAC_VER_23:
case RTL_GIGA_MAC_VER_24:
+ case RTL_GIGA_MAC_VER_34:
RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
break;
default:
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 01dcb1a..727c129 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -545,9 +545,9 @@ mwifiex_dump_station_info(struct mwifiex_private *priv,
/*
* Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
- * MCS index values for us are 0 to 7.
+ * MCS index values for us are 0 to 15.
*/
- if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
+ if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
sinfo->txrate.mcs = priv->tx_rate;
sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
/* 40MHz rate */
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 0ffa111..bdf960b 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -876,6 +876,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x1482, 0x3c09) },
/* AirTies */
{ USB_DEVICE(0x1eda, 0x2012) },
+ { USB_DEVICE(0x1eda, 0x2210) },
{ USB_DEVICE(0x1eda, 0x2310) },
/* Allwin */
{ USB_DEVICE(0x8516, 0x2070) },
@@ -945,6 +946,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
/* DVICO */
{ USB_DEVICE(0x0fe9, 0xb307) },
/* Edimax */
+ { USB_DEVICE(0x7392, 0x4085) },
{ USB_DEVICE(0x7392, 0x7711) },
{ USB_DEVICE(0x7392, 0x7717) },
{ USB_DEVICE(0x7392, 0x7718) },
@@ -1020,6 +1022,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
/* Philips */
{ USB_DEVICE(0x0471, 0x200f) },
/* Planex */
+ { USB_DEVICE(0x2019, 0x5201) },
{ USB_DEVICE(0x2019, 0xab25) },
{ USB_DEVICE(0x2019, 0xed06) },
/* Quanta */
@@ -1088,6 +1091,12 @@ static struct usb_device_id rt2800usb_device_table[] = {
#ifdef CONFIG_RT2800USB_RT33XX
/* Belkin */
{ USB_DEVICE(0x050d, 0x945b) },
+ /* D-Link */
+ { USB_DEVICE(0x2001, 0x3c17) },
+ /* Panasonic */
+ { USB_DEVICE(0x083a, 0xb511) },
+ /* Philips */
+ { USB_DEVICE(0x0471, 0x20dd) },
/* Ralink */
{ USB_DEVICE(0x148f, 0x3370) },
{ USB_DEVICE(0x148f, 0x8070) },
@@ -1099,6 +1108,8 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x8516, 0x3572) },
/* Askey */
{ USB_DEVICE(0x1690, 0x0744) },
+ { USB_DEVICE(0x1690, 0x0761) },
+ { USB_DEVICE(0x1690, 0x0764) },
/* Cisco */
{ USB_DEVICE(0x167b, 0x4001) },
/* EnGenius */
@@ -1113,6 +1124,9 @@ static struct usb_device_id rt2800usb_device_table[] = {
/* Sitecom */
{ USB_DEVICE(0x0df6, 0x0041) },
{ USB_DEVICE(0x0df6, 0x0062) },
+ { USB_DEVICE(0x0df6, 0x0065) },
+ { USB_DEVICE(0x0df6, 0x0066) },
+ { USB_DEVICE(0x0df6, 0x0068) },
/* Toshiba */
{ USB_DEVICE(0x0930, 0x0a07) },
/* Zinwell */
@@ -1122,6 +1136,9 @@ static struct usb_device_id rt2800usb_device_table[] = {
/* Azurewave */
{ USB_DEVICE(0x13d3, 0x3329) },
{ USB_DEVICE(0x13d3, 0x3365) },
+ /* D-Link */
+ { USB_DEVICE(0x2001, 0x3c1c) },
+ { USB_DEVICE(0x2001, 0x3c1d) },
/* Ralink */
{ USB_DEVICE(0x148f, 0x5370) },
{ USB_DEVICE(0x148f, 0x5372) },
@@ -1163,13 +1180,8 @@ static struct usb_device_id rt2800usb_device_table[] = {
/* D-Link */
{ USB_DEVICE(0x07d1, 0x3c0b) },
{ USB_DEVICE(0x07d1, 0x3c17) },
- { USB_DEVICE(0x2001, 0x3c17) },
- /* Edimax */
- { USB_DEVICE(0x7392, 0x4085) },
/* Encore */
{ USB_DEVICE(0x203d, 0x14a1) },
- /* Fujitsu Stylistic 550 */
- { USB_DEVICE(0x1690, 0x0761) },
/* Gemtek */
{ USB_DEVICE(0x15a9, 0x0010) },
/* Gigabyte */
@@ -1190,7 +1202,6 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x05a6, 0x0101) },
{ USB_DEVICE(0x1d4d, 0x0010) },
/* Planex */
- { USB_DEVICE(0x2019, 0x5201) },
{ USB_DEVICE(0x2019, 0xab24) },
/* Qcom */
{ USB_DEVICE(0x18e8, 0x6259) },
diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/rtlwifi/rtl8192de/phy.c
index 2cf4c5f..de9faa9 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192de/phy.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192de/phy.c
@@ -3462,21 +3462,21 @@ void rtl92d_phy_config_macphymode_info(struct ieee80211_hw *hw)
switch (rtlhal->macphymode) {
case DUALMAC_SINGLEPHY:
rtlphy->rf_type = RF_2T2R;
- rtlhal->version |= CHIP_92D_SINGLEPHY;
+ rtlhal->version |= RF_TYPE_2T2R;
rtlhal->bandset = BAND_ON_BOTH;
rtlhal->current_bandtype = BAND_ON_2_4G;
break;
case SINGLEMAC_SINGLEPHY:
rtlphy->rf_type = RF_2T2R;
- rtlhal->version |= CHIP_92D_SINGLEPHY;
+ rtlhal->version |= RF_TYPE_2T2R;
rtlhal->bandset = BAND_ON_BOTH;
rtlhal->current_bandtype = BAND_ON_2_4G;
break;
case DUALMAC_DUALPHY:
rtlphy->rf_type = RF_1T1R;
- rtlhal->version &= (~CHIP_92D_SINGLEPHY);
+ rtlhal->version &= RF_TYPE_1T1R;
/* Now we let MAC0 run on 5G band. */
if (rtlhal->interfaceindex == 0) {
rtlhal->bandset = BAND_ON_5G;
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 351dc0b..ee77a58 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -287,6 +287,7 @@ static void scsi_host_dev_release(struct device *dev)
struct Scsi_Host *shost = dev_to_shost(dev);
struct device *parent = dev->parent;
struct request_queue *q;
+ void *queuedata;
scsi_proc_hostdir_rm(shost->hostt);
@@ -296,9 +297,9 @@ static void scsi_host_dev_release(struct device *dev)
destroy_workqueue(shost->work_q);
q = shost->uspace_req_q;
if (q) {
- kfree(q->queuedata);
- q->queuedata = NULL;
- scsi_free_queue(q);
+ queuedata = q->queuedata;
+ blk_cleanup_queue(q);
+ kfree(queuedata);
}
scsi_destroy_command_freelist(shost);
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index e48ba4b..dbe3568 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -774,7 +774,7 @@ static struct domain_device *sas_ex_discover_end_dev(
}
/* See if this phy is part of a wide port */
-static int sas_ex_join_wide_port(struct domain_device *parent, int phy_id)
+static bool sas_ex_join_wide_port(struct domain_device *parent, int phy_id)
{
struct ex_phy *phy = &parent->ex_dev.ex_phy[phy_id];
int i;
@@ -790,11 +790,11 @@ static int sas_ex_join_wide_port(struct domain_device *parent, int phy_id)
sas_port_add_phy(ephy->port, phy->phy);
phy->port = ephy->port;
phy->phy_state = PHY_DEVICE_DISCOVERED;
- return 0;
+ return true;
}
}
- return -ENODEV;
+ return false;
}
static struct domain_device *sas_ex_discover_expander(
@@ -932,8 +932,7 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
return res;
}
- res = sas_ex_join_wide_port(dev, phy_id);
- if (!res) {
+ if (sas_ex_join_wide_port(dev, phy_id)) {
SAS_DPRINTK("Attaching ex phy%d to wide port %016llx\n",
phy_id, SAS_ADDR(ex_phy->attached_sas_addr));
return res;
@@ -978,8 +977,7 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
if (SAS_ADDR(ex->ex_phy[i].attached_sas_addr) ==
SAS_ADDR(child->sas_addr)) {
ex->ex_phy[i].phy_state= PHY_DEVICE_DISCOVERED;
- res = sas_ex_join_wide_port(dev, i);
- if (!res)
+ if (sas_ex_join_wide_port(dev, i))
SAS_DPRINTK("Attaching ex phy%d to wide port %016llx\n",
i, SAS_ADDR(ex->ex_phy[i].attached_sas_addr));
@@ -1849,32 +1847,20 @@ static int sas_discover_new(struct domain_device *dev, int phy_id)
{
struct ex_phy *ex_phy = &dev->ex_dev.ex_phy[phy_id];
struct domain_device *child;
- bool found = false;
- int res, i;
+ int res;
SAS_DPRINTK("ex %016llx phy%d new device attached\n",
SAS_ADDR(dev->sas_addr), phy_id);
res = sas_ex_phy_discover(dev, phy_id);
if (res)
- goto out;
- /* to support the wide port inserted */
- for (i = 0; i < dev->ex_dev.num_phys; i++) {
- struct ex_phy *ex_phy_temp = &dev->ex_dev.ex_phy[i];
- if (i == phy_id)
- continue;
- if (SAS_ADDR(ex_phy_temp->attached_sas_addr) ==
- SAS_ADDR(ex_phy->attached_sas_addr)) {
- found = true;
- break;
- }
- }
- if (found) {
- sas_ex_join_wide_port(dev, phy_id);
+ return res;
+
+ if (sas_ex_join_wide_port(dev, phy_id))
return 0;
- }
+
res = sas_ex_discover_devices(dev, phy_id);
- if (!res)
- goto out;
+ if (res)
+ return res;
list_for_each_entry(child, &dev->ex_dev.children, siblings) {
if (SAS_ADDR(child->sas_addr) ==
SAS_ADDR(ex_phy->attached_sas_addr)) {
@@ -1884,7 +1870,6 @@ static int sas_discover_new(struct domain_device *dev, int phy_id)
break;
}
}
-out:
return res;
}
@@ -1983,9 +1968,7 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
struct domain_device *dev = NULL;
res = sas_find_bcast_dev(port_dev, &dev);
- if (res)
- goto out;
- if (dev) {
+ while (res == 0 && dev) {
struct expander_device *ex = &dev->ex_dev;
int i = 0, phy_id;
@@ -1997,8 +1980,10 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
res = sas_rediscover(dev, phy_id);
i = phy_id + 1;
} while (i < ex->num_phys);
+
+ dev = NULL;
+ res = sas_find_bcast_dev(port_dev, &dev);
}
-out:
return res;
}
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 2aeb2e9..831db24 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -785,7 +785,13 @@ static void scsi_done(struct scsi_cmnd *cmd)
/* Move this to a header if it becomes more generally useful */
static struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
{
- return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
+ struct scsi_driver **sdp;
+
+ sdp = (struct scsi_driver **)cmd->request->rq_disk->private_data;
+ if (!sdp)
+ return NULL;
+
+ return *sdp;
}
/**
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index dc6131e..456b131 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1673,6 +1673,20 @@ static void scsi_restart_operations(struct Scsi_Host *shost)
* requests are started.
*/
scsi_run_host_queues(shost);
+
+ /*
+ * if eh is active and host_eh_scheduled is pending we need to re-run
+ * recovery. we do this check after scsi_run_host_queues() to allow
+ * everything pent up since the last eh run a chance to make forward
+ * progress before we sync again. Either we'll immediately re-run
+ * recovery or scsi_device_unbusy() will wake us again when these
+ * pending commands complete.
+ */
+ spin_lock_irqsave(shost->host_lock, flags);
+ if (shost->host_eh_scheduled)
+ if (scsi_host_set_state(shost, SHOST_RECOVERY))
+ WARN_ON(scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY));
+ spin_unlock_irqrestore(shost->host_lock, flags);
}
/**
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index f0ab58e..6c4b620 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -406,10 +406,6 @@ static void scsi_run_queue(struct request_queue *q)
LIST_HEAD(starved_list);
unsigned long flags;
- /* if the device is dead, sdev will be NULL, so no queue to run */
- if (!sdev)
- return;
-
shost = sdev->host;
if (scsi_target(sdev)->single_lun)
scsi_single_lun_run(sdev);
@@ -483,15 +479,26 @@ void scsi_requeue_run_queue(struct work_struct *work)
*/
static void scsi_requeue_command(struct request_queue *q, struct scsi_cmnd *cmd)
{
+ struct scsi_device *sdev = cmd->device;
struct request *req = cmd->request;
unsigned long flags;
+ /*
+ * We need to hold a reference on the device to avoid the queue being
+ * killed after the unlock and before scsi_run_queue is invoked which
+ * may happen because scsi_unprep_request() puts the command which
+ * releases its reference on the device.
+ */
+ get_device(&sdev->sdev_gendev);
+
spin_lock_irqsave(q->queue_lock, flags);
scsi_unprep_request(req);
blk_requeue_request(q, req);
spin_unlock_irqrestore(q->queue_lock, flags);
scsi_run_queue(q);
+
+ put_device(&sdev->sdev_gendev);
}
void scsi_next_command(struct scsi_cmnd *cmd)
@@ -1374,16 +1381,16 @@ static inline int scsi_host_queue_ready(struct request_queue *q,
* may be changed after request stacking drivers call the function,
* regardless of taking lock or not.
*
- * When scsi can't dispatch I/Os anymore and needs to kill I/Os
- * (e.g. !sdev), scsi needs to return 'not busy'.
- * Otherwise, request stacking drivers may hold requests forever.
+ * When scsi can't dispatch I/Os anymore and needs to kill I/Os scsi
+ * needs to return 'not busy'. Otherwise, request stacking drivers
+ * may hold requests forever.
*/
static int scsi_lld_busy(struct request_queue *q)
{
struct scsi_device *sdev = q->queuedata;
struct Scsi_Host *shost;
- if (!sdev)
+ if (blk_queue_dead(q))
return 0;
shost = sdev->host;
@@ -1494,12 +1501,6 @@ static void scsi_request_fn(struct request_queue *q)
struct scsi_cmnd *cmd;
struct request *req;
- if (!sdev) {
- while ((req = blk_peek_request(q)) != NULL)
- scsi_kill_request(req, q);
- return;
- }
-
if(!get_device(&sdev->sdev_gendev))
/* We must be tearing the block queue down already */
return;
@@ -1701,20 +1702,6 @@ struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
return q;
}
-void scsi_free_queue(struct request_queue *q)
-{
- unsigned long flags;
-
- WARN_ON(q->queuedata);
-
- /* cause scsi_request_fn() to kill all non-finished requests */
- spin_lock_irqsave(q->queue_lock, flags);
- q->request_fn(q);
- spin_unlock_irqrestore(q->queue_lock, flags);
-
- blk_cleanup_queue(q);
-}
-
/*
* Function: scsi_block_requests()
*
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 5b475d0..d58adca 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -85,7 +85,6 @@ extern void scsi_next_command(struct scsi_cmnd *cmd);
extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
extern void scsi_run_host_queues(struct Scsi_Host *shost);
extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
-extern void scsi_free_queue(struct request_queue *q);
extern int scsi_init_queue(void);
extern void scsi_exit_queue(void);
struct request_queue;
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 6e7ea4a..a48b59c 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1710,6 +1710,9 @@ static void scsi_sysfs_add_devices(struct Scsi_Host *shost)
{
struct scsi_device *sdev;
shost_for_each_device(sdev, shost) {
+ /* target removed before the device could be added */
+ if (sdev->sdev_state == SDEV_DEL)
+ continue;
if (!scsi_host_scan_allowed(shost) ||
scsi_sysfs_add_sdev(sdev) != 0)
__scsi_remove_device(sdev);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 04c2a27..bb7c482 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -971,11 +971,8 @@ void __scsi_remove_device(struct scsi_device *sdev)
sdev->host->hostt->slave_destroy(sdev);
transport_destroy_device(dev);
- /* cause the request function to reject all I/O requests */
- sdev->request_queue->queuedata = NULL;
-
/* Freeing the queue signals to block that we're done */
- scsi_free_queue(sdev->request_queue);
+ blk_cleanup_queue(sdev->request_queue);
put_device(dev);
}
@@ -1000,7 +997,6 @@ static void __scsi_remove_target(struct scsi_target *starget)
struct scsi_device *sdev;
spin_lock_irqsave(shost->host_lock, flags);
- starget->reap_ref++;
restart:
list_for_each_entry(sdev, &shost->__devices, siblings) {
if (sdev->channel != starget->channel ||
@@ -1014,14 +1010,6 @@ static void __scsi_remove_target(struct scsi_target *starget)
goto restart;
}
spin_unlock_irqrestore(shost->host_lock, flags);
- scsi_target_reap(starget);
-}
-
-static int __remove_child (struct device * dev, void * data)
-{
- if (scsi_is_target_device(dev))
- __scsi_remove_target(to_scsi_target(dev));
- return 0;
}
/**
@@ -1034,14 +1022,34 @@ static int __remove_child (struct device * dev, void * data)
*/
void scsi_remove_target(struct device *dev)
{
- if (scsi_is_target_device(dev)) {
- __scsi_remove_target(to_scsi_target(dev));
- return;
+ struct Scsi_Host *shost = dev_to_shost(dev->parent);
+ struct scsi_target *starget, *found;
+ unsigned long flags;
+
+ restart:
+ found = NULL;
+ spin_lock_irqsave(shost->host_lock, flags);
+ list_for_each_entry(starget, &shost->__targets, siblings) {
+ if (starget->state == STARGET_DEL)
+ continue;
+ if (starget->dev.parent == dev || &starget->dev == dev) {
+ found = starget;
+ found->reap_ref++;
+ break;
+ }
}
+ spin_unlock_irqrestore(shost->host_lock, flags);
- get_device(dev);
- device_for_each_child(dev, NULL, __remove_child);
- put_device(dev);
+ if (found) {
+ __scsi_remove_target(found);
+ scsi_target_reap(found);
+ /* in the case where @dev has multiple starget children,
+ * continue removing.
+ *
+ * FIXME: does such a case exist?
+ */
+ goto restart;
+ }
}
EXPORT_SYMBOL(scsi_remove_target);
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 0842cc7..2ff1255 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -427,19 +427,8 @@ int iscsit_reset_np_thread(
int iscsit_del_np_comm(struct iscsi_np *np)
{
- if (!np->np_socket)
- return 0;
-
- /*
- * Some network transports allocate their own struct sock->file,
- * see if we need to free any additional allocated resources.
- */
- if (np->np_flags & NPF_SCTP_STRUCT_FILE) {
- kfree(np->np_socket->file);
- np->np_socket->file = NULL;
- }
-
- sock_release(np->np_socket);
+ if (np->np_socket)
+ sock_release(np->np_socket);
return 0;
}
@@ -4105,13 +4094,8 @@ int iscsit_close_connection(
kfree(conn->conn_ops);
conn->conn_ops = NULL;
- if (conn->sock) {
- if (conn->conn_flags & CONNFLAG_SCTP_STRUCT_FILE) {
- kfree(conn->sock->file);
- conn->sock->file = NULL;
- }
+ if (conn->sock)
sock_release(conn->sock);
- }
conn->thread_set = NULL;
pr_debug("Moving to TARG_CONN_STATE_FREE.\n");
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index 7da2d6a..0f68197 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -224,7 +224,6 @@ enum iscsi_timer_flags_table {
/* Used for struct iscsi_np->np_flags */
enum np_flags_table {
NPF_IP_NETWORK = 0x00,
- NPF_SCTP_STRUCT_FILE = 0x01 /* Bugfix */
};
/* Used for struct iscsi_np->np_thread_state */
@@ -511,7 +510,6 @@ struct iscsi_conn {
u16 local_port;
int net_size;
u32 auth_id;
-#define CONNFLAG_SCTP_STRUCT_FILE 0x01
u32 conn_flags;
/* Used for iscsi_tx_login_rsp() */
u32 login_itt;
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index bd2adec..2ec5339 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -793,22 +793,6 @@ int iscsi_target_setup_login_socket(
}
np->np_socket = sock;
/*
- * The SCTP stack needs struct socket->file.
- */
- if ((np->np_network_transport == ISCSI_SCTP_TCP) ||
- (np->np_network_transport == ISCSI_SCTP_UDP)) {
- if (!sock->file) {
- sock->file = kzalloc(sizeof(struct file), GFP_KERNEL);
- if (!sock->file) {
- pr_err("Unable to allocate struct"
- " file for SCTP\n");
- ret = -ENOMEM;
- goto fail;
- }
- np->np_flags |= NPF_SCTP_STRUCT_FILE;
- }
- }
- /*
* Setup the np->np_sockaddr from the passed sockaddr setup
* in iscsi_target_configfs.c code..
*/
@@ -857,21 +841,15 @@ int iscsi_target_setup_login_socket(
fail:
np->np_socket = NULL;
- if (sock) {
- if (np->np_flags & NPF_SCTP_STRUCT_FILE) {
- kfree(sock->file);
- sock->file = NULL;
- }
-
+ if (sock)
sock_release(sock);
- }
return ret;
}
static int __iscsi_target_login_thread(struct iscsi_np *np)
{
u8 buffer[ISCSI_HDR_LEN], iscsi_opcode, zero_tsih = 0;
- int err, ret = 0, ip_proto, sock_type, set_sctp_conn_flag, stop;
+ int err, ret = 0, ip_proto, sock_type, stop;
struct iscsi_conn *conn = NULL;
struct iscsi_login *login;
struct iscsi_portal_group *tpg = NULL;
@@ -882,7 +860,6 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
struct sockaddr_in6 sock_in6;
flush_signals(current);
- set_sctp_conn_flag = 0;
sock = np->np_socket;
ip_proto = np->np_ip_proto;
sock_type = np->np_sock_type;
@@ -907,35 +884,12 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
spin_unlock_bh(&np->np_thread_lock);
goto out;
}
- /*
- * The SCTP stack needs struct socket->file.
- */
- if ((np->np_network_transport == ISCSI_SCTP_TCP) ||
- (np->np_network_transport == ISCSI_SCTP_UDP)) {
- if (!new_sock->file) {
- new_sock->file = kzalloc(
- sizeof(struct file), GFP_KERNEL);
- if (!new_sock->file) {
- pr_err("Unable to allocate struct"
- " file for SCTP\n");
- sock_release(new_sock);
- /* Get another socket */
- return 1;
- }
- set_sctp_conn_flag = 1;
- }
- }
-
iscsi_start_login_thread_timer(np);
conn = kzalloc(sizeof(struct iscsi_conn), GFP_KERNEL);
if (!conn) {
pr_err("Could not allocate memory for"
" new connection\n");
- if (set_sctp_conn_flag) {
- kfree(new_sock->file);
- new_sock->file = NULL;
- }
sock_release(new_sock);
/* Get another socket */
return 1;
@@ -945,9 +899,6 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
conn->conn_state = TARG_CONN_STATE_FREE;
conn->sock = new_sock;
- if (set_sctp_conn_flag)
- conn->conn_flags |= CONNFLAG_SCTP_STRUCT_FILE;
-
pr_debug("Moving to TARG_CONN_STATE_XPT_UP.\n");
conn->conn_state = TARG_CONN_STATE_XPT_UP;
@@ -1195,13 +1146,8 @@ old_sess_out:
iscsi_release_param_list(conn->param_list);
conn->param_list = NULL;
}
- if (conn->sock) {
- if (conn->conn_flags & CONNFLAG_SCTP_STRUCT_FILE) {
- kfree(conn->sock->file);
- conn->sock->file = NULL;
- }
+ if (conn->sock)
sock_release(conn->sock);
- }
kfree(conn);
if (tpg) {
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 93b9406..717a8d4 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -1114,11 +1114,11 @@ int target_emulate_unmap(struct se_task *task)
struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
unsigned char *buf, *ptr = NULL;
- unsigned char *cdb = &cmd->t_task_cdb[0];
sector_t lba;
- unsigned int size = cmd->data_length, range;
- int ret = 0, offset;
- unsigned short dl, bd_dl;
+ int size = cmd->data_length;
+ u32 range;
+ int ret = 0;
+ int dl, bd_dl;
if (!dev->transport->do_discard) {
pr_err("UNMAP emulation not supported for: %s\n",
@@ -1127,24 +1127,41 @@ int target_emulate_unmap(struct se_task *task)
return -ENOSYS;
}
- /* First UNMAP block descriptor starts at 8 byte offset */
- offset = 8;
- size -= 8;
- dl = get_unaligned_be16(&cdb[0]);
- bd_dl = get_unaligned_be16(&cdb[2]);
-
buf = transport_kmap_data_sg(cmd);
- ptr = &buf[offset];
- pr_debug("UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu"
+ dl = get_unaligned_be16(&buf[0]);
+ bd_dl = get_unaligned_be16(&buf[2]);
+
+ size = min(size - 8, bd_dl);
+ if (size / 16 > dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
+ cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* First UNMAP block descriptor starts at 8 byte offset */
+ ptr = &buf[8];
+ pr_debug("UNMAP: Sub: %s Using dl: %u bd_dl: %u size: %u"
" ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr);
- while (size) {
+ while (size >= 16) {
lba = get_unaligned_be64(&ptr[0]);
range = get_unaligned_be32(&ptr[8]);
pr_debug("UNMAP: Using lba: %llu and range: %u\n",
(unsigned long long)lba, range);
+ if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) {
+ cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (lba + range > dev->transport->get_blocks(dev) + 1) {
+ cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE;
+ ret = -EINVAL;
+ goto err;
+ }
+
ret = dev->transport->do_discard(dev, lba, range);
if (ret < 0) {
pr_err("blkdev_issue_discard() failed: %d\n",
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 5660916..94c03d2 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1820,6 +1820,7 @@ static void transport_generic_request_failure(struct se_cmd *cmd)
case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
case TCM_UNKNOWN_MODE_PAGE:
case TCM_WRITE_PROTECTED:
+ case TCM_ADDRESS_OUT_OF_RANGE:
case TCM_CHECK_CONDITION_ABORT_CMD:
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
case TCM_CHECK_CONDITION_NOT_READY:
@@ -4496,6 +4497,15 @@ int transport_send_check_condition_and_sense(
/* WRITE PROTECTED */
buffer[offset+SPC_ASC_KEY_OFFSET] = 0x27;
break;
+ case TCM_ADDRESS_OUT_OF_RANGE:
+ /* CURRENT ERROR */
+ buffer[offset] = 0x70;
+ buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
+ /* ILLEGAL REQUEST */
+ buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
+ /* LOGICAL BLOCK ADDRESS OUT OF RANGE */
+ buffer[offset+SPC_ASC_KEY_OFFSET] = 0x21;
+ break;
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
/* CURRENT ERROR */
buffer[offset] = 0x70;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index f6ff837..a9df218 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1555,10 +1555,14 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
void __user *addr = as->userurb;
unsigned int i;
- if (as->userbuffer && urb->actual_length)
- if (copy_to_user(as->userbuffer, urb->transfer_buffer,
- urb->actual_length))
+ if (as->userbuffer && urb->actual_length) {
+ if (urb->number_of_packets > 0) /* Isochronous */
+ i = urb->transfer_buffer_length;
+ else /* Non-Isoc */
+ i = urb->actual_length;
+ if (copy_to_user(as->userbuffer, urb->transfer_buffer, i))
return -EFAULT;
+ }
if (put_user(as->status, &userurb->status))
return -EFAULT;
if (put_user(urb->actual_length, &userurb->actual_length))
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 29c854b..4e1f0aa 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -796,12 +796,6 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN])
SET_ETHTOOL_OPS(net, &ops);
- /* two kinds of host-initiated state changes:
- * - iff DATA transfer is active, carrier is "on"
- * - tx queueing enabled if open *and* carrier is "on"
- */
- netif_carrier_off(net);
-
dev->gadget = g;
SET_NETDEV_DEV(net, &g->dev);
SET_NETDEV_DEVTYPE(net, &gadget_type);
@@ -815,6 +809,12 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN])
INFO(dev, "HOST MAC %pM\n", dev->host_mac);
the_dev = dev;
+
+ /* two kinds of host-initiated state changes:
+ * - iff DATA transfer is active, carrier is "on"
+ * - tx queueing enabled if open *and* carrier is "on"
+ */
+ netif_carrier_off(net);
}
return status;
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 5971c95..d89aac1 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -932,8 +932,12 @@ static const struct usb_device_id option_ids[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0165, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0167, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)&net_intf4_blacklist },
- { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff) },
- { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0326, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1012, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1057, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1058, 0xff, 0xff, 0xff) },
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 0b39458..03321e5 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -206,10 +206,17 @@ static noinline int run_ordered_completions(struct btrfs_workers *workers,
work->ordered_func(work);
- /* now take the lock again and call the freeing code */
+ /* now take the lock again and drop our item from the list */
spin_lock(&workers->order_lock);
list_del(&work->order_list);
+ spin_unlock(&workers->order_lock);
+
+ /*
+ * we don't want to call the ordered free functions
+ * with the lock held though
+ */
work->ordered_free(work);
+ spin_lock(&workers->order_lock);
}
spin_unlock(&workers->order_lock);
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f44b392..6b2a724 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -872,7 +872,8 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
#ifdef CONFIG_MIGRATION
static int btree_migratepage(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page,
+ enum migrate_mode mode)
{
/*
* we can't safely write a btree page from here,
@@ -887,7 +888,7 @@ static int btree_migratepage(struct address_space *mapping,
if (page_has_private(page) &&
!try_to_release_page(page, GFP_KERNEL))
return -EAGAIN;
- return migrate_page(mapping, newpage, page);
+ return migrate_page(mapping, newpage, page, mode);
}
#endif
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 6aa7457..c858a29 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -89,6 +89,32 @@ static struct {
/* Forward declarations */
static void cifs_readv_complete(struct work_struct *work);
+#ifdef CONFIG_HIGHMEM
+/*
+ * On arches that have high memory, kmap address space is limited. By
+ * serializing the kmap operations on those arches, we ensure that we don't
+ * end up with a bunch of threads in writeback with partially mapped page
+ * arrays, stuck waiting for kmap to come back. That situation prevents
+ * progress and can deadlock.
+ */
+static DEFINE_MUTEX(cifs_kmap_mutex);
+
+static inline void
+cifs_kmap_lock(void)
+{
+ mutex_lock(&cifs_kmap_mutex);
+}
+
+static inline void
+cifs_kmap_unlock(void)
+{
+ mutex_unlock(&cifs_kmap_mutex);
+}
+#else /* !CONFIG_HIGHMEM */
+#define cifs_kmap_lock() do { ; } while(0)
+#define cifs_kmap_unlock() do { ; } while(0)
+#endif /* CONFIG_HIGHMEM */
+
/* Mark as invalid, all open files on tree connections since they
were closed when session to server was lost */
static void mark_open_files_invalid(struct cifs_tcon *pTcon)
@@ -1540,6 +1566,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0;
cFYI(1, "eof=%llu eof_index=%lu", eof, eof_index);
+ cifs_kmap_lock();
list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
if (remaining >= PAGE_CACHE_SIZE) {
/* enough data to fill the page */
@@ -1589,6 +1616,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
page_cache_release(page);
}
}
+ cifs_kmap_unlock();
/* issue the read if we have any iovecs left to fill */
if (rdata->nr_iov > 1) {
@@ -2171,6 +2199,7 @@ cifs_async_writev(struct cifs_writedata *wdata)
iov[0].iov_base = smb;
/* marshal up the pages into iov array */
+ cifs_kmap_lock();
wdata->bytes = 0;
for (i = 0; i < wdata->nr_pages; i++) {
iov[i + 1].iov_len = min(inode->i_size -
@@ -2179,6 +2208,7 @@ cifs_async_writev(struct cifs_writedata *wdata)
iov[i + 1].iov_base = kmap(wdata->pages[i]);
wdata->bytes += iov[i + 1].iov_len;
}
+ cifs_kmap_unlock();
cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes);
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 914bf9e..d6970f7 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -557,7 +557,8 @@ ext4_fsblk_t ext4_count_free_clusters(struct super_block *sb)
if (bitmap_bh == NULL)
continue;
- x = ext4_count_free(bitmap_bh, sb->s_blocksize);
+ x = ext4_count_free(bitmap_bh->b_data,
+ EXT4_BLOCKS_PER_GROUP(sb) / 8);
printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n",
i, ext4_free_group_clusters(sb, gdp), x);
bitmap_count += x;
diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c
index fa3af81..bbde5d5 100644
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -11,21 +11,15 @@
#include <linux/jbd2.h>
#include "ext4.h"
-#ifdef EXT4FS_DEBUG
-
static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
-unsigned int ext4_count_free(struct buffer_head *map, unsigned int numchars)
+unsigned int ext4_count_free(char *bitmap, unsigned int numchars)
{
unsigned int i, sum = 0;
- if (!map)
- return 0;
for (i = 0; i < numchars; i++)
- sum += nibblemap[map->b_data[i] & 0xf] +
- nibblemap[(map->b_data[i] >> 4) & 0xf];
+ sum += nibblemap[bitmap[i] & 0xf] +
+ nibblemap[(bitmap[i] >> 4) & 0xf];
return sum;
}
-#endif /* EXT4FS_DEBUG */
-
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7b1cd5c..8cb184c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1123,8 +1123,7 @@ struct ext4_sb_info {
unsigned long s_desc_per_block; /* Number of group descriptors per block */
ext4_group_t s_groups_count; /* Number of groups in the fs */
ext4_group_t s_blockfile_groups;/* Groups acceptable for non-extent files */
- unsigned long s_overhead_last; /* Last calculated overhead */
- unsigned long s_blocks_last; /* Last seen block count */
+ unsigned long s_overhead; /* # of fs overhead clusters */
unsigned int s_cluster_ratio; /* Number of blocks per cluster */
unsigned int s_cluster_bits; /* log2 of s_cluster_ratio */
loff_t s_bitmap_maxbytes; /* max bytes for bitmap files */
@@ -1757,7 +1756,7 @@ struct mmpd_data {
# define NORET_AND noreturn,
/* bitmap.c */
-extern unsigned int ext4_count_free(struct buffer_head *, unsigned);
+extern unsigned int ext4_count_free(char *bitmap, unsigned numchars);
/* balloc.c */
extern unsigned int ext4_block_group(struct super_block *sb,
@@ -1925,6 +1924,7 @@ extern int ext4_group_extend(struct super_block *sb,
ext4_fsblk_t n_blocks_count);
/* super.c */
+extern int ext4_calculate_overhead(struct super_block *sb);
extern void *ext4_kvmalloc(size_t size, gfp_t flags);
extern void *ext4_kvzalloc(size_t size, gfp_t flags);
extern void ext4_kvfree(void *ptr);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 8fb6844..6266799 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1057,7 +1057,8 @@ unsigned long ext4_count_free_inodes(struct super_block *sb)
if (!bitmap_bh)
continue;
- x = ext4_count_free(bitmap_bh, EXT4_INODES_PER_GROUP(sb) / 8);
+ x = ext4_count_free(bitmap_bh->b_data,
+ EXT4_INODES_PER_GROUP(sb) / 8);
printk(KERN_DEBUG "group %lu: stored = %d, counted = %lu\n",
(unsigned long) i, ext4_free_inodes_count(sb, gdp), x);
bitmap_count += x;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 3ce7613..8b01f9f 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -277,6 +277,15 @@ void ext4_da_update_reserve_space(struct inode *inode,
used = ei->i_reserved_data_blocks;
}
+ if (unlikely(ei->i_allocated_meta_blocks > ei->i_reserved_meta_blocks)) {
+ ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, allocated %d "
+ "with only %d reserved metadata blocks\n", __func__,
+ inode->i_ino, ei->i_allocated_meta_blocks,
+ ei->i_reserved_meta_blocks);
+ WARN_ON(1);
+ ei->i_allocated_meta_blocks = ei->i_reserved_meta_blocks;
+ }
+
/* Update per-inode reservations */
ei->i_reserved_data_blocks -= used;
ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;
@@ -1102,6 +1111,17 @@ static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock)
struct ext4_inode_info *ei = EXT4_I(inode);
unsigned int md_needed;
int ret;
+ ext4_lblk_t save_last_lblock;
+ int save_len;
+
+ /*
+ * We will charge metadata quota at writeout time; this saves
+ * us from metadata over-estimation, though we may go over by
+ * a small amount in the end. Here we just reserve for data.
+ */
+ ret = dquot_reserve_block(inode, EXT4_C2B(sbi, 1));
+ if (ret)
+ return ret;
/*
* recalculate the amount of metadata blocks to reserve
@@ -1110,32 +1130,31 @@ static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock)
*/
repeat:
spin_lock(&ei->i_block_reservation_lock);
+ /*
+ * ext4_calc_metadata_amount() has side effects, which we have
+ * to be prepared undo if we fail to claim space.
+ */
+ save_len = ei->i_da_metadata_calc_len;
+ save_last_lblock = ei->i_da_metadata_calc_last_lblock;
md_needed = EXT4_NUM_B2C(sbi,
ext4_calc_metadata_amount(inode, lblock));
trace_ext4_da_reserve_space(inode, md_needed);
- spin_unlock(&ei->i_block_reservation_lock);
/*
- * We will charge metadata quota at writeout time; this saves
- * us from metadata over-estimation, though we may go over by
- * a small amount in the end. Here we just reserve for data.
- */
- ret = dquot_reserve_block(inode, EXT4_C2B(sbi, 1));
- if (ret)
- return ret;
- /*
* We do still charge estimated metadata to the sb though;
* we cannot afford to run out of free blocks.
*/
if (ext4_claim_free_clusters(sbi, md_needed + 1, 0)) {
- dquot_release_reservation_block(inode, EXT4_C2B(sbi, 1));
+ ei->i_da_metadata_calc_len = save_len;
+ ei->i_da_metadata_calc_last_lblock = save_last_lblock;
+ spin_unlock(&ei->i_block_reservation_lock);
if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
yield();
goto repeat;
}
+ dquot_release_reservation_block(inode, EXT4_C2B(sbi, 1));
return -ENOSPC;
}
- spin_lock(&ei->i_block_reservation_lock);
ei->i_reserved_data_blocks++;
ei->i_reserved_meta_blocks += md_needed;
spin_unlock(&ei->i_block_reservation_lock);
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 996780a..4eac337 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -952,6 +952,11 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
&sbi->s_flex_groups[flex_group].free_inodes);
}
+ /*
+ * Update the fs overhead information
+ */
+ ext4_calculate_overhead(sb);
+
ext4_handle_dirty_super(handle, sb);
exit_journal:
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a93486e..a071348 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3083,6 +3083,114 @@ static void ext4_destroy_lazyinit_thread(void)
kthread_stop(ext4_lazyinit_task);
}
+/*
+ * Note: calculating the overhead so we can be compatible with
+ * historical BSD practice is quite difficult in the face of
+ * clusters/bigalloc. This is because multiple metadata blocks from
+ * different block group can end up in the same allocation cluster.
+ * Calculating the exact overhead in the face of clustered allocation
+ * requires either O(all block bitmaps) in memory or O(number of block
+ * groups**2) in time. We will still calculate the superblock for
+ * older file systems --- and if we come across with a bigalloc file
+ * system with zero in s_overhead_clusters the estimate will be close to
+ * correct especially for very large cluster sizes --- but for newer
+ * file systems, it's better to calculate this figure once at mkfs
+ * time, and store it in the superblock. If the superblock value is
+ * present (even for non-bigalloc file systems), we will use it.
+ */
+static int count_overhead(struct super_block *sb, ext4_group_t grp,
+ char *buf)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_group_desc *gdp;
+ ext4_fsblk_t first_block, last_block, b;
+ ext4_group_t i, ngroups = ext4_get_groups_count(sb);
+ int s, j, count = 0;
+
+ first_block = le32_to_cpu(sbi->s_es->s_first_data_block) +
+ (grp * EXT4_BLOCKS_PER_GROUP(sb));
+ last_block = first_block + EXT4_BLOCKS_PER_GROUP(sb) - 1;
+ for (i = 0; i < ngroups; i++) {
+ gdp = ext4_get_group_desc(sb, i, NULL);
+ b = ext4_block_bitmap(sb, gdp);
+ if (b >= first_block && b <= last_block) {
+ ext4_set_bit(EXT4_B2C(sbi, b - first_block), buf);
+ count++;
+ }
+ b = ext4_inode_bitmap(sb, gdp);
+ if (b >= first_block && b <= last_block) {
+ ext4_set_bit(EXT4_B2C(sbi, b - first_block), buf);
+ count++;
+ }
+ b = ext4_inode_table(sb, gdp);
+ if (b >= first_block && b + sbi->s_itb_per_group <= last_block)
+ for (j = 0; j < sbi->s_itb_per_group; j++, b++) {
+ int c = EXT4_B2C(sbi, b - first_block);
+ ext4_set_bit(c, buf);
+ count++;
+ }
+ if (i != grp)
+ continue;
+ s = 0;
+ if (ext4_bg_has_super(sb, grp)) {
+ ext4_set_bit(s++, buf);
+ count++;
+ }
+ for (j = ext4_bg_num_gdb(sb, grp); j > 0; j--) {
+ ext4_set_bit(EXT4_B2C(sbi, s++), buf);
+ count++;
+ }
+ }
+ if (!count)
+ return 0;
+ return EXT4_CLUSTERS_PER_GROUP(sb) -
+ ext4_count_free(buf, EXT4_CLUSTERS_PER_GROUP(sb) / 8);
+}
+
+/*
+ * Compute the overhead and stash it in sbi->s_overhead
+ */
+int ext4_calculate_overhead(struct super_block *sb)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
+ ext4_group_t i, ngroups = ext4_get_groups_count(sb);
+ ext4_fsblk_t overhead = 0;
+ char *buf = (char *) get_zeroed_page(GFP_KERNEL);
+
+ memset(buf, 0, PAGE_SIZE);
+ if (!buf)
+ return -ENOMEM;
+
+ /*
+ * Compute the overhead (FS structures). This is constant
+ * for a given filesystem unless the number of block groups
+ * changes so we cache the previous value until it does.
+ */
+
+ /*
+ * All of the blocks before first_data_block are overhead
+ */
+ overhead = EXT4_B2C(sbi, le32_to_cpu(es->s_first_data_block));
+
+ /*
+ * Add the overhead found in each block group
+ */
+ for (i = 0; i < ngroups; i++) {
+ int blks;
+
+ blks = count_overhead(sb, i, buf);
+ overhead += blks;
+ if (blks)
+ memset(buf, 0, PAGE_SIZE);
+ cond_resched();
+ }
+ sbi->s_overhead = overhead;
+ smp_wmb();
+ free_page((unsigned long) buf);
+ return 0;
+}
+
static int ext4_fill_super(struct super_block *sb, void *data, int silent)
{
char *orig_data = kstrdup(data, GFP_KERNEL);
@@ -3695,6 +3803,18 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
no_journal:
/*
+ * Get the # of file system overhead blocks from the
+ * superblock if present.
+ */
+ if (es->s_overhead_clusters)
+ sbi->s_overhead = le32_to_cpu(es->s_overhead_clusters);
+ else {
+ ret = ext4_calculate_overhead(sb);
+ if (ret)
+ goto failed_mount_wq;
+ }
+
+ /*
* The maximum number of concurrent works can be high and
* concurrency isn't really necessary. Limit it to 1.
*/
@@ -4568,67 +4688,21 @@ restore_opts:
return err;
}
-/*
- * Note: calculating the overhead so we can be compatible with
- * historical BSD practice is quite difficult in the face of
- * clusters/bigalloc. This is because multiple metadata blocks from
- * different block group can end up in the same allocation cluster.
- * Calculating the exact overhead in the face of clustered allocation
- * requires either O(all block bitmaps) in memory or O(number of block
- * groups**2) in time. We will still calculate the superblock for
- * older file systems --- and if we come across with a bigalloc file
- * system with zero in s_overhead_clusters the estimate will be close to
- * correct especially for very large cluster sizes --- but for newer
- * file systems, it's better to calculate this figure once at mkfs
- * time, and store it in the superblock. If the superblock value is
- * present (even for non-bigalloc file systems), we will use it.
- */
static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- struct ext4_group_desc *gdp;
+ ext4_fsblk_t overhead = 0;
u64 fsid;
s64 bfree;
- if (test_opt(sb, MINIX_DF)) {
- sbi->s_overhead_last = 0;
- } else if (es->s_overhead_clusters) {
- sbi->s_overhead_last = le32_to_cpu(es->s_overhead_clusters);
- } else if (sbi->s_blocks_last != ext4_blocks_count(es)) {
- ext4_group_t i, ngroups = ext4_get_groups_count(sb);
- ext4_fsblk_t overhead = 0;
-
- /*
- * Compute the overhead (FS structures). This is constant
- * for a given filesystem unless the number of block groups
- * changes so we cache the previous value until it does.
- */
-
- /*
- * All of the blocks before first_data_block are
- * overhead
- */
- overhead = EXT4_B2C(sbi, le32_to_cpu(es->s_first_data_block));
-
- /*
- * Add the overhead found in each block group
- */
- for (i = 0; i < ngroups; i++) {
- gdp = ext4_get_group_desc(sb, i, NULL);
- overhead += ext4_num_overhead_clusters(sb, i, gdp);
- cond_resched();
- }
- sbi->s_overhead_last = overhead;
- smp_wmb();
- sbi->s_blocks_last = ext4_blocks_count(es);
- }
+ if (!test_opt(sb, MINIX_DF))
+ overhead = sbi->s_overhead;
buf->f_type = EXT4_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
- buf->f_blocks = (ext4_blocks_count(es) -
- EXT4_C2B(sbi, sbi->s_overhead_last));
+ buf->f_blocks = ext4_blocks_count(es) - EXT4_C2B(sbi, sbi->s_overhead);
bfree = percpu_counter_sum_positive(&sbi->s_freeclusters_counter) -
percpu_counter_sum_positive(&sbi->s_dirtyclusters_counter);
/* prevent underflow in case that few free space is available */
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index ebc2f4d..0aa424a 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -569,7 +569,8 @@ static int hugetlbfs_set_page_dirty(struct page *page)
}
static int hugetlbfs_migrate_page(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page,
+ enum migrate_mode mode)
{
int rc;
diff --git a/fs/locks.c b/fs/locks.c
index 6a64f15..fcc50ab 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -308,7 +308,7 @@ static int flock_make_lock(struct file *filp, struct file_lock **lock,
return 0;
}
-static int assign_type(struct file_lock *fl, int type)
+static int assign_type(struct file_lock *fl, long type)
{
switch (type) {
case F_RDLCK:
@@ -445,7 +445,7 @@ static const struct lock_manager_operations lease_manager_ops = {
/*
* Initialize a lease, use the default lock manager operations
*/
-static int lease_init(struct file *filp, int type, struct file_lock *fl)
+static int lease_init(struct file *filp, long type, struct file_lock *fl)
{
if (assign_type(fl, type) != 0)
return -EINVAL;
@@ -463,7 +463,7 @@ static int lease_init(struct file *filp, int type, struct file_lock *fl)
}
/* Allocate a file_lock initialised to this type of lease */
-static struct file_lock *lease_alloc(struct file *filp, int type)
+static struct file_lock *lease_alloc(struct file *filp, long type)
{
struct file_lock *fl = locks_alloc_lock();
int error = -ENOMEM;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 3f4d957..68b3f20 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -330,7 +330,7 @@ void nfs_commit_release_pages(struct nfs_write_data *data);
#ifdef CONFIG_MIGRATION
extern int nfs_migrate_page(struct address_space *,
- struct page *, struct page *);
+ struct page *, struct page *, enum migrate_mode);
#else
#define nfs_migrate_page NULL
#endif
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 4efd421..c6e523a 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1711,7 +1711,7 @@ out_error:
#ifdef CONFIG_MIGRATION
int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
- struct page *page)
+ struct page *page, enum migrate_mode mode)
{
/*
* If PagePrivate is set, then the page is currently associated with
@@ -1726,7 +1726,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
nfs_fscache_release_page(page, GFP_KERNEL);
- return migrate_page(mapping, newpage, page);
+ return migrate_page(mapping, newpage, page, mode);
}
#endif
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 270e135..516b7f0 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1285,7 +1285,7 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
BUG_ON(ident != TAG_IDENT_LVD);
lvd = (struct logicalVolDesc *)bh->b_data;
table_len = le32_to_cpu(lvd->mapTableLength);
- if (sizeof(*lvd) + table_len > sb->s_blocksize) {
+ if (table_len > sb->s_blocksize - sizeof(*lvd)) {
udf_err(sb, "error loading logical volume descriptor: "
"Partition table too long (%u > %lu)\n", table_len,
sb->s_blocksize - sizeof(*lvd));
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0ed1eb0..ff039f0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -481,6 +481,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
#define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
#define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
+#define blk_queue_dead(q) test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags)
#define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
#define blk_queue_noxmerges(q) \
test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags)
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 6cb60fd..c692acc 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -66,8 +66,9 @@ enum {
/* migration should happen before other stuff but after perf */
CPU_PRI_PERF = 20,
CPU_PRI_MIGRATION = 10,
- /* prepare workqueues for other notifiers */
- CPU_PRI_WORKQUEUE = 5,
+ /* bring up workqueues before normal notifiers and down after */
+ CPU_PRI_WORKQUEUE_UP = 5,
+ CPU_PRI_WORKQUEUE_DOWN = -5,
};
#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index e9eaec5..7a7e5fd 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -89,42 +89,33 @@ extern void rebuild_sched_domains(void);
extern void cpuset_print_task_mems_allowed(struct task_struct *p);
/*
- * reading current mems_allowed and mempolicy in the fastpath must protected
- * by get_mems_allowed()
+ * get_mems_allowed is required when making decisions involving mems_allowed
+ * such as during page allocation. mems_allowed can be updated in parallel
+ * and depending on the new value an operation can fail potentially causing
+ * process failure. A retry loop with get_mems_allowed and put_mems_allowed
+ * prevents these artificial failures.
*/
-static inline void get_mems_allowed(void)
+static inline unsigned int get_mems_allowed(void)
{
- current->mems_allowed_change_disable++;
-
- /*
- * ensure that reading mems_allowed and mempolicy happens after the
- * update of ->mems_allowed_change_disable.
- *
- * the write-side task finds ->mems_allowed_change_disable is not 0,
- * and knows the read-side task is reading mems_allowed or mempolicy,
- * so it will clear old bits lazily.
- */
- smp_mb();
+ return read_seqcount_begin(¤t->mems_allowed_seq);
}
-static inline void put_mems_allowed(void)
+/*
+ * If this returns false, the operation that took place after get_mems_allowed
+ * may have failed. It is up to the caller to retry the operation if
+ * appropriate.
+ */
+static inline bool put_mems_allowed(unsigned int seq)
{
- /*
- * ensure that reading mems_allowed and mempolicy before reducing
- * mems_allowed_change_disable.
- *
- * the write-side task will know that the read-side task is still
- * reading mems_allowed or mempolicy, don't clears old bits in the
- * nodemask.
- */
- smp_mb();
- --ACCESS_ONCE(current->mems_allowed_change_disable);
+ return !read_seqcount_retry(¤t->mems_allowed_seq, seq);
}
static inline void set_mems_allowed(nodemask_t nodemask)
{
task_lock(current);
+ write_seqcount_begin(¤t->mems_allowed_seq);
current->mems_allowed = nodemask;
+ write_seqcount_end(¤t->mems_allowed_seq);
task_unlock(current);
}
@@ -234,12 +225,14 @@ static inline void set_mems_allowed(nodemask_t nodemask)
{
}
-static inline void get_mems_allowed(void)
+static inline unsigned int get_mems_allowed(void)
{
+ return 0;
}
-static inline void put_mems_allowed(void)
+static inline bool put_mems_allowed(unsigned int seq)
{
+ return true;
}
#endif /* !CONFIG_CPUSETS */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 43d36b7..29b6353 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -525,6 +525,7 @@ enum positive_aop_returns {
struct page;
struct address_space;
struct writeback_control;
+enum migrate_mode;
struct iov_iter {
const struct iovec *iov;
@@ -609,9 +610,12 @@ struct address_space_operations {
loff_t offset, unsigned long nr_segs);
int (*get_xip_mem)(struct address_space *, pgoff_t, int,
void **, unsigned long *);
- /* migrate the contents of a page to the specified target */
+ /*
+ * migrate the contents of a page to the specified target. If sync
+ * is false, it must not block.
+ */
int (*migratepage) (struct address_space *,
- struct page *, struct page *);
+ struct page *, struct page *, enum migrate_mode);
int (*launder_page) (struct page *);
int (*is_partially_uptodate) (struct page *, read_descriptor_t *,
unsigned long);
@@ -2586,7 +2590,8 @@ extern int generic_check_addressable(unsigned, u64);
#ifdef CONFIG_MIGRATION
extern int buffer_migrate_page(struct address_space *,
- struct page *, struct page *);
+ struct page *, struct page *,
+ enum migrate_mode);
#else
#define buffer_migrate_page NULL
#endif
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 32574ee..df53fdf 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -30,6 +30,13 @@ extern struct fs_struct init_fs;
#define INIT_THREADGROUP_FORK_LOCK(sig)
#endif
+#ifdef CONFIG_CPUSETS
+#define INIT_CPUSET_SEQ \
+ .mems_allowed_seq = SEQCNT_ZERO,
+#else
+#define INIT_CPUSET_SEQ
+#endif
+
#define INIT_SIGNALS(sig) { \
.nr_threads = 1, \
.wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
@@ -193,6 +200,7 @@ extern struct cred init_cred;
INIT_FTRACE_GRAPH \
INIT_TRACE_RECURSION \
INIT_TASK_RCU_PREEMPT(tsk) \
+ INIT_CPUSET_SEQ \
}
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index e39aeec..eaf8674 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -6,18 +6,31 @@
typedef struct page *new_page_t(struct page *, unsigned long private, int **);
+/*
+ * MIGRATE_ASYNC means never block
+ * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking
+ * on most operations but not ->writepage as the potential stall time
+ * is too significant
+ * MIGRATE_SYNC will block when migrating pages
+ */
+enum migrate_mode {
+ MIGRATE_ASYNC,
+ MIGRATE_SYNC_LIGHT,
+ MIGRATE_SYNC,
+};
+
#ifdef CONFIG_MIGRATION
#define PAGE_MIGRATION 1
extern void putback_lru_pages(struct list_head *l);
extern int migrate_page(struct address_space *,
- struct page *, struct page *);
+ struct page *, struct page *, enum migrate_mode);
extern int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- bool sync);
+ enum migrate_mode mode);
extern int migrate_huge_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- bool sync);
+ enum migrate_mode mode);
extern int fail_migrate_page(struct address_space *,
struct page *, struct page *);
@@ -36,10 +49,10 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping,
static inline void putback_lru_pages(struct list_head *l) {}
static inline int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- bool sync) { return -ENOSYS; }
+ enum migrate_mode mode) { return -ENOSYS; }
static inline int migrate_huge_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- bool sync) { return -ENOSYS; }
+ enum migrate_mode mode) { return -ENOSYS; }
static inline int migrate_prep(void) { return -ENOSYS; }
static inline int migrate_prep_local(void) { return -ENOSYS; }
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 905b1e1..25842b6 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -173,6 +173,8 @@ static inline int is_unevictable_lru(enum lru_list l)
#define ISOLATE_CLEAN ((__force isolate_mode_t)0x4)
/* Isolate unmapped file */
#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x8)
+/* Isolate for asynchronous migration */
+#define ISOLATE_ASYNC_MIGRATE ((__force isolate_mode_t)0x10)
/* LRU Isolation modes. */
typedef unsigned __bitwise__ isolate_mode_t;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5afa2a3..d336c35 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -145,6 +145,7 @@ extern unsigned long this_cpu_load(void);
extern void calc_global_load(unsigned long ticks);
+extern void update_cpu_load_nohz(void);
extern unsigned long get_parent_ip(unsigned long addr);
@@ -1481,7 +1482,7 @@ struct task_struct {
#endif
#ifdef CONFIG_CPUSETS
nodemask_t mems_allowed; /* Protected by alloc_lock */
- int mems_allowed_change_disable;
+ seqcount_t mems_allowed_seq; /* Seqence no to catch updates */
int cpuset_mem_spread_rotor;
int cpuset_slab_spread_rotor;
#endif
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 94bbec3..6ee550e 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -157,6 +157,7 @@ enum tcm_sense_reason_table {
TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
TCM_CHECK_CONDITION_NOT_READY = 0x0f,
TCM_RESERVATION_CONFLICT = 0x10,
+ TCM_ADDRESS_OUT_OF_RANGE = 0x11,
};
struct se_obj {
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 0b1712d..46a1d3c 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -964,7 +964,6 @@ static void cpuset_change_task_nodemask(struct task_struct *tsk,
{
bool need_loop;
-repeat:
/*
* Allow tasks that have access to memory reserves because they have
* been OOM killed to get memory anywhere.
@@ -983,45 +982,19 @@ repeat:
*/
need_loop = task_has_mempolicy(tsk) ||
!nodes_intersects(*newmems, tsk->mems_allowed);
- nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems);
- mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1);
- /*
- * ensure checking ->mems_allowed_change_disable after setting all new
- * allowed nodes.
- *
- * the read-side task can see an nodemask with new allowed nodes and
- * old allowed nodes. and if it allocates page when cpuset clears newly
- * disallowed ones continuous, it can see the new allowed bits.
- *
- * And if setting all new allowed nodes is after the checking, setting
- * all new allowed nodes and clearing newly disallowed ones will be done
- * continuous, and the read-side task may find no node to alloc page.
- */
- smp_mb();
+ if (need_loop)
+ write_seqcount_begin(&tsk->mems_allowed_seq);
- /*
- * Allocation of memory is very fast, we needn't sleep when waiting
- * for the read-side.
- */
- while (need_loop && ACCESS_ONCE(tsk->mems_allowed_change_disable)) {
- task_unlock(tsk);
- if (!task_curr(tsk))
- yield();
- goto repeat;
- }
-
- /*
- * ensure checking ->mems_allowed_change_disable before clearing all new
- * disallowed nodes.
- *
- * if clearing newly disallowed bits before the checking, the read-side
- * task may find no node to alloc page.
- */
- smp_mb();
+ nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems);
+ mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1);
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP2);
tsk->mems_allowed = *newmems;
+
+ if (need_loop)
+ write_seqcount_end(&tsk->mems_allowed_seq);
+
task_unlock(tsk);
}
diff --git a/kernel/fork.c b/kernel/fork.c
index 79ee71f..222457a 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -979,6 +979,9 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
#ifdef CONFIG_CGROUPS
init_rwsem(&sig->threadgroup_fork_lock);
#endif
+#ifdef CONFIG_CPUSETS
+ seqcount_init(&tsk->mems_allowed_seq);
+#endif
sig->oom_adj = current->signal->oom_adj;
sig->oom_score_adj = current->signal->oom_score_adj;
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 7c0d578..013bd2e 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -367,6 +367,7 @@ int hibernation_snapshot(int platform_mode)
}
suspend_console();
+ ftrace_stop();
pm_restrict_gfp_mask();
error = dpm_suspend(PMSG_FREEZE);
if (error)
@@ -392,6 +393,7 @@ int hibernation_snapshot(int platform_mode)
if (error || !in_suspend)
pm_restore_gfp_mask();
+ ftrace_start();
resume_console();
dpm_complete(msg);
@@ -496,6 +498,7 @@ int hibernation_restore(int platform_mode)
pm_prepare_console();
suspend_console();
+ ftrace_stop();
pm_restrict_gfp_mask();
error = dpm_suspend_start(PMSG_QUIESCE);
if (!error) {
@@ -503,6 +506,7 @@ int hibernation_restore(int platform_mode)
dpm_resume_end(PMSG_RECOVER);
}
pm_restore_gfp_mask();
+ ftrace_start();
resume_console();
pm_restore_console();
return error;
@@ -529,6 +533,7 @@ int hibernation_platform_enter(void)
entering_platform_hibernation = true;
suspend_console();
+ ftrace_stop();
error = dpm_suspend_start(PMSG_HIBERNATE);
if (error) {
if (hibernation_ops->recover)
@@ -572,6 +577,7 @@ int hibernation_platform_enter(void)
Resume_devices:
entering_platform_hibernation = false;
dpm_resume_end(PMSG_RESTORE);
+ ftrace_start();
resume_console();
Close:
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 4953dc0..af48faa 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -25,6 +25,7 @@
#include <linux/export.h>
#include <linux/suspend.h>
#include <linux/syscore_ops.h>
+#include <linux/ftrace.h>
#include <trace/events/power.h>
#include "power.h"
@@ -220,6 +221,7 @@ int suspend_devices_and_enter(suspend_state_t state)
goto Close;
}
suspend_console();
+ ftrace_stop();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
@@ -239,6 +241,7 @@ int suspend_devices_and_enter(suspend_state_t state)
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
+ ftrace_start();
resume_console();
Close:
if (suspend_ops->end)
diff --git a/kernel/sched.c b/kernel/sched.c
index 52ac69b..9cd8ca7 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1887,7 +1887,7 @@ static void double_rq_unlock(struct rq *rq1, struct rq *rq2)
static void update_sysctl(void);
static int get_update_sysctl_factor(void);
-static void update_cpu_load(struct rq *this_rq);
+static void update_idle_cpu_load(struct rq *this_rq);
static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
{
@@ -3855,22 +3855,13 @@ decay_load_missed(unsigned long load, unsigned long missed_updates, int idx)
* scheduler tick (TICK_NSEC). With tickless idle this will not be called
* every tick. We fix it up based on jiffies.
*/
-static void update_cpu_load(struct rq *this_rq)
+static void __update_cpu_load(struct rq *this_rq, unsigned long this_load,
+ unsigned long pending_updates)
{
- unsigned long this_load = this_rq->load.weight;
- unsigned long curr_jiffies = jiffies;
- unsigned long pending_updates;
int i, scale;
this_rq->nr_load_updates++;
- /* Avoid repeated calls on same jiffy, when moving in and out of idle */
- if (curr_jiffies == this_rq->last_load_update_tick)
- return;
-
- pending_updates = curr_jiffies - this_rq->last_load_update_tick;
- this_rq->last_load_update_tick = curr_jiffies;
-
/* Update our load: */
this_rq->cpu_load[0] = this_load; /* Fasttrack for idx 0 */
for (i = 1, scale = 2; i < CPU_LOAD_IDX_MAX; i++, scale += scale) {
@@ -3895,9 +3886,78 @@ static void update_cpu_load(struct rq *this_rq)
sched_avg_update(this_rq);
}
+#ifdef CONFIG_NO_HZ
+/*
+ * There is no sane way to deal with nohz on smp when using jiffies because the
+ * cpu doing the jiffies update might drift wrt the cpu doing the jiffy reading
+ * causing off-by-one errors in observed deltas; {0,2} instead of {1,1}.
+ *
+ * Therefore we cannot use the delta approach from the regular tick since that
+ * would seriously skew the load calculation. However we'll make do for those
+ * updates happening while idle (nohz_idle_balance) or coming out of idle
+ * (tick_nohz_idle_exit).
+ *
+ * This means we might still be one tick off for nohz periods.
+ */
+
+/*
+ * Called from nohz_idle_balance() to update the load ratings before doing the
+ * idle balance.
+ */
+static void update_idle_cpu_load(struct rq *this_rq)
+{
+ unsigned long curr_jiffies = ACCESS_ONCE(jiffies);
+ unsigned long load = this_rq->load.weight;
+ unsigned long pending_updates;
+
+ /*
+ * bail if there's load or we're actually up-to-date.
+ */
+ if (load || curr_jiffies == this_rq->last_load_update_tick)
+ return;
+
+ pending_updates = curr_jiffies - this_rq->last_load_update_tick;
+ this_rq->last_load_update_tick = curr_jiffies;
+
+ __update_cpu_load(this_rq, load, pending_updates);
+}
+
+/*
+ * Called from tick_nohz_idle_exit() -- try and fix up the ticks we missed.
+ */
+void update_cpu_load_nohz(void)
+{
+ struct rq *this_rq = this_rq();
+ unsigned long curr_jiffies = ACCESS_ONCE(jiffies);
+ unsigned long pending_updates;
+
+ if (curr_jiffies == this_rq->last_load_update_tick)
+ return;
+
+ raw_spin_lock(&this_rq->lock);
+ pending_updates = curr_jiffies - this_rq->last_load_update_tick;
+ if (pending_updates) {
+ this_rq->last_load_update_tick = curr_jiffies;
+ /*
+ * We were idle, this means load 0, the current load might be
+ * !0 due to remote wakeups and the sort.
+ */
+ __update_cpu_load(this_rq, 0, pending_updates);
+ }
+ raw_spin_unlock(&this_rq->lock);
+}
+#endif /* CONFIG_NO_HZ */
+
+/*
+ * Called from scheduler_tick()
+ */
static void update_cpu_load_active(struct rq *this_rq)
{
- update_cpu_load(this_rq);
+ /*
+ * See the mess around update_idle_cpu_load() / update_cpu_load_nohz().
+ */
+ this_rq->last_load_update_tick = jiffies;
+ __update_cpu_load(this_rq, this_rq->load.weight, 1);
calc_load_account_active(this_rq);
}
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 8a39fa3..66e4576 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -4735,7 +4735,7 @@ static void nohz_idle_balance(int this_cpu, enum cpu_idle_type idle)
raw_spin_lock_irq(&this_rq->lock);
update_rq_clock(this_rq);
- update_cpu_load(this_rq);
+ update_idle_cpu_load(this_rq);
raw_spin_unlock_irq(&this_rq->lock);
rebalance_domains(balance_cpu, CPU_IDLE);
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 9955ebd..793548c 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -549,6 +549,7 @@ void tick_nohz_restart_sched_tick(void)
/* Update jiffies first */
select_nohz_load_balancer(0);
tick_do_update_jiffies64(now);
+ update_cpu_load_nohz();
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
/*
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 7947e16..a650bee 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3586,6 +3586,41 @@ static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
return notifier_from_errno(0);
}
+/*
+ * Workqueues should be brought up before normal priority CPU notifiers.
+ * This will be registered high priority CPU notifier.
+ */
+static int __devinit workqueue_cpu_up_callback(struct notifier_block *nfb,
+ unsigned long action,
+ void *hcpu)
+{
+ switch (action & ~CPU_TASKS_FROZEN) {
+ case CPU_UP_PREPARE:
+ case CPU_UP_CANCELED:
+ case CPU_DOWN_FAILED:
+ case CPU_ONLINE:
+ return workqueue_cpu_callback(nfb, action, hcpu);
+ }
+ return NOTIFY_OK;
+}
+
+/*
+ * Workqueues should be brought down after normal priority CPU notifiers.
+ * This will be registered as low priority CPU notifier.
+ */
+static int __devinit workqueue_cpu_down_callback(struct notifier_block *nfb,
+ unsigned long action,
+ void *hcpu)
+{
+ switch (action & ~CPU_TASKS_FROZEN) {
+ case CPU_DOWN_PREPARE:
+ case CPU_DYING:
+ case CPU_POST_DEAD:
+ return workqueue_cpu_callback(nfb, action, hcpu);
+ }
+ return NOTIFY_OK;
+}
+
#ifdef CONFIG_SMP
struct work_for_cpu {
@@ -3779,7 +3814,8 @@ static int __init init_workqueues(void)
unsigned int cpu;
int i;
- cpu_notifier(workqueue_cpu_callback, CPU_PRI_WORKQUEUE);
+ cpu_notifier(workqueue_cpu_up_callback, CPU_PRI_WORKQUEUE_UP);
+ cpu_notifier(workqueue_cpu_down_callback, CPU_PRI_WORKQUEUE_DOWN);
/* initialize gcwqs */
for_each_gcwq_cpu(cpu) {
diff --git a/mm/compaction.c b/mm/compaction.c
index 50f1c60..46973fb 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -372,7 +372,7 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
}
if (!cc->sync)
- mode |= ISOLATE_CLEAN;
+ mode |= ISOLATE_ASYNC_MIGRATE;
/* Try isolate the page */
if (__isolate_lru_page(page, mode, 0) != 0)
@@ -577,7 +577,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
nr_migrate = cc->nr_migratepages;
err = migrate_pages(&cc->migratepages, compaction_alloc,
(unsigned long)cc, false,
- cc->sync);
+ cc->sync ? MIGRATE_SYNC_LIGHT : MIGRATE_ASYNC);
update_nr_listpages(cc);
nr_remaining = cc->nr_migratepages;
diff --git a/mm/filemap.c b/mm/filemap.c
index 03c5b0e..556858c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -500,10 +500,13 @@ struct page *__page_cache_alloc(gfp_t gfp)
struct page *page;
if (cpuset_do_page_mem_spread()) {
- get_mems_allowed();
- n = cpuset_mem_spread_node();
- page = alloc_pages_exact_node(n, gfp, 0);
- put_mems_allowed();
+ unsigned int cpuset_mems_cookie;
+ do {
+ cpuset_mems_cookie = get_mems_allowed();
+ n = cpuset_mem_spread_node();
+ page = alloc_pages_exact_node(n, gfp, 0);
+ } while (!put_mems_allowed(cpuset_mems_cookie) && !page);
+
return page;
}
return alloc_pages(gfp, 0);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 7c535b0..b1e1bad 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -538,8 +538,10 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
struct zonelist *zonelist;
struct zone *zone;
struct zoneref *z;
+ unsigned int cpuset_mems_cookie;
- get_mems_allowed();
+retry_cpuset:
+ cpuset_mems_cookie = get_mems_allowed();
zonelist = huge_zonelist(vma, address,
htlb_alloc_mask, &mpol, &nodemask);
/*
@@ -566,10 +568,15 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
}
}
}
-err:
+
mpol_cond_put(mpol);
- put_mems_allowed();
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
return page;
+
+err:
+ mpol_cond_put(mpol);
+ return NULL;
}
static void update_and_free_page(struct hstate *h, struct page *page)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 06d3479..5bd5bb1 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1427,8 +1427,8 @@ static int soft_offline_huge_page(struct page *page, int flags)
/* Keep page count to indicate a given hugepage is isolated. */
list_add(&hpage->lru, &pagelist);
- ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, 0,
- true);
+ ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, false,
+ MIGRATE_SYNC);
if (ret) {
struct page *page1, *page2;
list_for_each_entry_safe(page1, page2, &pagelist, lru)
@@ -1557,7 +1557,7 @@ int soft_offline_page(struct page *page, int flags)
page_is_file_cache(page));
list_add(&page->lru, &pagelist);
ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL,
- 0, true);
+ false, MIGRATE_SYNC);
if (ret) {
putback_lru_pages(&pagelist);
pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 2168489..6629faf 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -809,7 +809,7 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
}
/* this function returns # of failed pages */
ret = migrate_pages(&source, hotremove_migrate_alloc, 0,
- true, true);
+ true, MIGRATE_SYNC);
if (ret)
putback_lru_pages(&source);
}
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index b26aae2..c0007f9 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -942,7 +942,7 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_node_page, dest,
- false, true);
+ false, MIGRATE_SYNC);
if (err)
putback_lru_pages(&pagelist);
}
@@ -1843,18 +1843,24 @@ struct page *
alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
unsigned long addr, int node)
{
- struct mempolicy *pol = get_vma_policy(current, vma, addr);
+ struct mempolicy *pol;
struct zonelist *zl;
struct page *page;
+ unsigned int cpuset_mems_cookie;
+
+retry_cpuset:
+ pol = get_vma_policy(current, vma, addr);
+ cpuset_mems_cookie = get_mems_allowed();
- get_mems_allowed();
if (unlikely(pol->mode == MPOL_INTERLEAVE)) {
unsigned nid;
nid = interleave_nid(pol, vma, addr, PAGE_SHIFT + order);
mpol_cond_put(pol);
page = alloc_page_interleave(gfp, order, nid);
- put_mems_allowed();
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
+
return page;
}
zl = policy_zonelist(gfp, pol, node);
@@ -1865,7 +1871,8 @@ alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
struct page *page = __alloc_pages_nodemask(gfp, order,
zl, policy_nodemask(gfp, pol));
__mpol_put(pol);
- put_mems_allowed();
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
return page;
}
/*
@@ -1873,7 +1880,8 @@ alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
*/
page = __alloc_pages_nodemask(gfp, order, zl,
policy_nodemask(gfp, pol));
- put_mems_allowed();
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
return page;
}
@@ -1900,11 +1908,14 @@ struct page *alloc_pages_current(gfp_t gfp, unsigned order)
{
struct mempolicy *pol = current->mempolicy;
struct page *page;
+ unsigned int cpuset_mems_cookie;
if (!pol || in_interrupt() || (gfp & __GFP_THISNODE))
pol = &default_policy;
- get_mems_allowed();
+retry_cpuset:
+ cpuset_mems_cookie = get_mems_allowed();
+
/*
* No reference counting needed for current->mempolicy
* nor system default_policy
@@ -1915,7 +1926,10 @@ struct page *alloc_pages_current(gfp_t gfp, unsigned order)
page = __alloc_pages_nodemask(gfp, order,
policy_zonelist(gfp, pol, numa_node_id()),
policy_nodemask(gfp, pol));
- put_mems_allowed();
+
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
+
return page;
}
EXPORT_SYMBOL(alloc_pages_current);
diff --git a/mm/migrate.c b/mm/migrate.c
index 177aca4..180d97f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -220,6 +220,56 @@ out:
pte_unmap_unlock(ptep, ptl);
}
+#ifdef CONFIG_BLOCK
+/* Returns true if all buffers are successfully locked */
+static bool buffer_migrate_lock_buffers(struct buffer_head *head,
+ enum migrate_mode mode)
+{
+ struct buffer_head *bh = head;
+
+ /* Simple case, sync compaction */
+ if (mode != MIGRATE_ASYNC) {
+ do {
+ get_bh(bh);
+ lock_buffer(bh);
+ bh = bh->b_this_page;
+
+ } while (bh != head);
+
+ return true;
+ }
+
+ /* async case, we cannot block on lock_buffer so use trylock_buffer */
+ do {
+ get_bh(bh);
+ if (!trylock_buffer(bh)) {
+ /*
+ * We failed to lock the buffer and cannot stall in
+ * async migration. Release the taken locks
+ */
+ struct buffer_head *failed_bh = bh;
+ put_bh(failed_bh);
+ bh = head;
+ while (bh != failed_bh) {
+ unlock_buffer(bh);
+ put_bh(bh);
+ bh = bh->b_this_page;
+ }
+ return false;
+ }
+
+ bh = bh->b_this_page;
+ } while (bh != head);
+ return true;
+}
+#else
+static inline bool buffer_migrate_lock_buffers(struct buffer_head *head,
+ enum migrate_mode mode)
+{
+ return true;
+}
+#endif /* CONFIG_BLOCK */
+
/*
* Replace the page in the mapping.
*
@@ -229,7 +279,8 @@ out:
* 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
*/
static int migrate_page_move_mapping(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page,
+ struct buffer_head *head, enum migrate_mode mode)
{
int expected_count;
void **pslot;
@@ -259,6 +310,20 @@ static int migrate_page_move_mapping(struct address_space *mapping,
}
/*
+ * In the async migration case of moving a page with buffers, lock the
+ * buffers using trylock before the mapping is moved. If the mapping
+ * was moved, we later failed to lock the buffers and could not move
+ * the mapping back due to an elevated page count, we would have to
+ * block waiting on other references to be dropped.
+ */
+ if (mode == MIGRATE_ASYNC && head &&
+ !buffer_migrate_lock_buffers(head, mode)) {
+ page_unfreeze_refs(page, expected_count);
+ spin_unlock_irq(&mapping->tree_lock);
+ return -EAGAIN;
+ }
+
+ /*
* Now we know that no one else is looking at the page.
*/
get_page(newpage); /* add cache reference */
@@ -415,13 +480,14 @@ EXPORT_SYMBOL(fail_migrate_page);
* Pages are locked upon entry and exit.
*/
int migrate_page(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page,
+ enum migrate_mode mode)
{
int rc;
BUG_ON(PageWriteback(page)); /* Writeback must be complete */
- rc = migrate_page_move_mapping(mapping, newpage, page);
+ rc = migrate_page_move_mapping(mapping, newpage, page, NULL, mode);
if (rc)
return rc;
@@ -438,28 +504,28 @@ EXPORT_SYMBOL(migrate_page);
* exist.
*/
int buffer_migrate_page(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page, enum migrate_mode mode)
{
struct buffer_head *bh, *head;
int rc;
if (!page_has_buffers(page))
- return migrate_page(mapping, newpage, page);
+ return migrate_page(mapping, newpage, page, mode);
head = page_buffers(page);
- rc = migrate_page_move_mapping(mapping, newpage, page);
+ rc = migrate_page_move_mapping(mapping, newpage, page, head, mode);
if (rc)
return rc;
- bh = head;
- do {
- get_bh(bh);
- lock_buffer(bh);
- bh = bh->b_this_page;
-
- } while (bh != head);
+ /*
+ * In the async case, migrate_page_move_mapping locked the buffers
+ * with an IRQ-safe spinlock held. In the sync case, the buffers
+ * need to be locked now
+ */
+ if (mode != MIGRATE_ASYNC)
+ BUG_ON(!buffer_migrate_lock_buffers(head, mode));
ClearPagePrivate(page);
set_page_private(newpage, page_private(page));
@@ -536,10 +602,14 @@ static int writeout(struct address_space *mapping, struct page *page)
* Default handling if a filesystem does not provide a migration function.
*/
static int fallback_migrate_page(struct address_space *mapping,
- struct page *newpage, struct page *page)
+ struct page *newpage, struct page *page, enum migrate_mode mode)
{
- if (PageDirty(page))
+ if (PageDirty(page)) {
+ /* Only writeback pages in full synchronous migration */
+ if (mode != MIGRATE_SYNC)
+ return -EBUSY;
return writeout(mapping, page);
+ }
/*
* Buffers may be managed in a filesystem specific way.
@@ -549,7 +619,7 @@ static int fallback_migrate_page(struct address_space *mapping,
!try_to_release_page(page, GFP_KERNEL))
return -EAGAIN;
- return migrate_page(mapping, newpage, page);
+ return migrate_page(mapping, newpage, page, mode);
}
/*
@@ -564,7 +634,7 @@ static int fallback_migrate_page(struct address_space *mapping,
* == 0 - success
*/
static int move_to_new_page(struct page *newpage, struct page *page,
- int remap_swapcache, bool sync)
+ int remap_swapcache, enum migrate_mode mode)
{
struct address_space *mapping;
int rc;
@@ -585,29 +655,18 @@ static int move_to_new_page(struct page *newpage, struct page *page,
mapping = page_mapping(page);
if (!mapping)
- rc = migrate_page(mapping, newpage, page);
- else {
+ rc = migrate_page(mapping, newpage, page, mode);
+ else if (mapping->a_ops->migratepage)
/*
- * Do not writeback pages if !sync and migratepage is
- * not pointing to migrate_page() which is nonblocking
- * (swapcache/tmpfs uses migratepage = migrate_page).
+ * Most pages have a mapping and most filesystems provide a
+ * migratepage callback. Anonymous pages are part of swap
+ * space which also has its own migratepage callback. This
+ * is the most common path for page migration.
*/
- if (PageDirty(page) && !sync &&
- mapping->a_ops->migratepage != migrate_page)
- rc = -EBUSY;
- else if (mapping->a_ops->migratepage)
- /*
- * Most pages have a mapping and most filesystems
- * should provide a migration function. Anonymous
- * pages are part of swap space which also has its
- * own migration function. This is the most common
- * path for page migration.
- */
- rc = mapping->a_ops->migratepage(mapping,
- newpage, page);
- else
- rc = fallback_migrate_page(mapping, newpage, page);
- }
+ rc = mapping->a_ops->migratepage(mapping,
+ newpage, page, mode);
+ else
+ rc = fallback_migrate_page(mapping, newpage, page, mode);
if (rc) {
newpage->mapping = NULL;
@@ -622,7 +681,7 @@ static int move_to_new_page(struct page *newpage, struct page *page,
}
static int __unmap_and_move(struct page *page, struct page *newpage,
- int force, bool offlining, bool sync)
+ int force, bool offlining, enum migrate_mode mode)
{
int rc = -EAGAIN;
int remap_swapcache = 1;
@@ -631,7 +690,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
struct anon_vma *anon_vma = NULL;
if (!trylock_page(page)) {
- if (!force || !sync)
+ if (!force || mode == MIGRATE_ASYNC)
goto out;
/*
@@ -677,10 +736,12 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
if (PageWriteback(page)) {
/*
- * For !sync, there is no point retrying as the retry loop
- * is expected to be too short for PageWriteback to be cleared
+ * Only in the case of a full syncronous migration is it
+ * necessary to wait for PageWriteback. In the async case,
+ * the retry loop is too short and in the sync-light case,
+ * the overhead of stalling is too much
*/
- if (!sync) {
+ if (mode != MIGRATE_SYNC) {
rc = -EBUSY;
goto uncharge;
}
@@ -751,7 +812,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
skip_unmap:
if (!page_mapped(page))
- rc = move_to_new_page(newpage, page, remap_swapcache, sync);
+ rc = move_to_new_page(newpage, page, remap_swapcache, mode);
if (rc && remap_swapcache)
remove_migration_ptes(page, page);
@@ -774,7 +835,8 @@ out:
* to the newly allocated page in newpage.
*/
static int unmap_and_move(new_page_t get_new_page, unsigned long private,
- struct page *page, int force, bool offlining, bool sync)
+ struct page *page, int force, bool offlining,
+ enum migrate_mode mode)
{
int rc = 0;
int *result = NULL;
@@ -792,7 +854,7 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
if (unlikely(split_huge_page(page)))
goto out;
- rc = __unmap_and_move(page, newpage, force, offlining, sync);
+ rc = __unmap_and_move(page, newpage, force, offlining, mode);
out:
if (rc != -EAGAIN) {
/*
@@ -840,7 +902,8 @@ out:
*/
static int unmap_and_move_huge_page(new_page_t get_new_page,
unsigned long private, struct page *hpage,
- int force, bool offlining, bool sync)
+ int force, bool offlining,
+ enum migrate_mode mode)
{
int rc = 0;
int *result = NULL;
@@ -853,7 +916,7 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
rc = -EAGAIN;
if (!trylock_page(hpage)) {
- if (!force || !sync)
+ if (!force || mode != MIGRATE_SYNC)
goto out;
lock_page(hpage);
}
@@ -864,7 +927,7 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
try_to_unmap(hpage, TTU_MIGRATION|TTU_IGNORE_MLOCK|TTU_IGNORE_ACCESS);
if (!page_mapped(hpage))
- rc = move_to_new_page(new_hpage, hpage, 1, sync);
+ rc = move_to_new_page(new_hpage, hpage, 1, mode);
if (rc)
remove_migration_ptes(hpage, hpage);
@@ -907,7 +970,7 @@ out:
*/
int migrate_pages(struct list_head *from,
new_page_t get_new_page, unsigned long private, bool offlining,
- bool sync)
+ enum migrate_mode mode)
{
int retry = 1;
int nr_failed = 0;
@@ -928,7 +991,7 @@ int migrate_pages(struct list_head *from,
rc = unmap_and_move(get_new_page, private,
page, pass > 2, offlining,
- sync);
+ mode);
switch(rc) {
case -ENOMEM:
@@ -958,7 +1021,7 @@ out:
int migrate_huge_pages(struct list_head *from,
new_page_t get_new_page, unsigned long private, bool offlining,
- bool sync)
+ enum migrate_mode mode)
{
int retry = 1;
int nr_failed = 0;
@@ -975,7 +1038,7 @@ int migrate_huge_pages(struct list_head *from,
rc = unmap_and_move_huge_page(get_new_page,
private, page, pass > 2, offlining,
- sync);
+ mode);
switch(rc) {
case -ENOMEM:
@@ -1104,7 +1167,7 @@ set_status:
err = 0;
if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_page_node,
- (unsigned long)pm, 0, true);
+ (unsigned long)pm, 0, MIGRATE_SYNC);
if (err)
putback_lru_pages(&pagelist);
}
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 485be89..065dbe8 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1886,14 +1886,20 @@ static struct page *
__alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
struct zonelist *zonelist, enum zone_type high_zoneidx,
nodemask_t *nodemask, int alloc_flags, struct zone *preferred_zone,
- int migratetype, unsigned long *did_some_progress,
- bool sync_migration)
+ int migratetype, bool sync_migration,
+ bool *deferred_compaction,
+ unsigned long *did_some_progress)
{
struct page *page;
- if (!order || compaction_deferred(preferred_zone))
+ if (!order)
return NULL;
+ if (compaction_deferred(preferred_zone)) {
+ *deferred_compaction = true;
+ return NULL;
+ }
+
current->flags |= PF_MEMALLOC;
*did_some_progress = try_to_compact_pages(zonelist, order, gfp_mask,
nodemask, sync_migration);
@@ -1921,7 +1927,13 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
* but not enough to satisfy watermarks.
*/
count_vm_event(COMPACTFAIL);
- defer_compaction(preferred_zone);
+
+ /*
+ * As async compaction considers a subset of pageblocks, only
+ * defer if the failure was a sync compaction failure.
+ */
+ if (sync_migration)
+ defer_compaction(preferred_zone);
cond_resched();
}
@@ -1933,8 +1945,9 @@ static inline struct page *
__alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
struct zonelist *zonelist, enum zone_type high_zoneidx,
nodemask_t *nodemask, int alloc_flags, struct zone *preferred_zone,
- int migratetype, unsigned long *did_some_progress,
- bool sync_migration)
+ int migratetype, bool sync_migration,
+ bool *deferred_compaction,
+ unsigned long *did_some_progress)
{
return NULL;
}
@@ -2084,6 +2097,7 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
unsigned long pages_reclaimed = 0;
unsigned long did_some_progress;
bool sync_migration = false;
+ bool deferred_compaction = false;
/*
* In the slowpath, we sanity check order to avoid ever trying to
@@ -2164,12 +2178,22 @@ rebalance:
zonelist, high_zoneidx,
nodemask,
alloc_flags, preferred_zone,
- migratetype, &did_some_progress,
- sync_migration);
+ migratetype, sync_migration,
+ &deferred_compaction,
+ &did_some_progress);
if (page)
goto got_pg;
sync_migration = true;
+ /*
+ * If compaction is deferred for high-order allocations, it is because
+ * sync compaction recently failed. In this is the case and the caller
+ * has requested the system not be heavily disrupted, fail the
+ * allocation now instead of entering direct reclaim
+ */
+ if (deferred_compaction && (gfp_mask & __GFP_NO_KSWAPD))
+ goto nopage;
+
/* Try direct reclaim and then allocating */
page = __alloc_pages_direct_reclaim(gfp_mask, order,
zonelist, high_zoneidx,
@@ -2232,8 +2256,9 @@ rebalance:
zonelist, high_zoneidx,
nodemask,
alloc_flags, preferred_zone,
- migratetype, &did_some_progress,
- sync_migration);
+ migratetype, sync_migration,
+ &deferred_compaction,
+ &did_some_progress);
if (page)
goto got_pg;
}
@@ -2257,8 +2282,9 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
{
enum zone_type high_zoneidx = gfp_zone(gfp_mask);
struct zone *preferred_zone;
- struct page *page;
+ struct page *page = NULL;
int migratetype = allocflags_to_migratetype(gfp_mask);
+ unsigned int cpuset_mems_cookie;
gfp_mask &= gfp_allowed_mask;
@@ -2277,15 +2303,15 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
if (unlikely(!zonelist->_zonerefs->zone))
return NULL;
- get_mems_allowed();
+retry_cpuset:
+ cpuset_mems_cookie = get_mems_allowed();
+
/* The preferred zone is used for statistics later */
first_zones_zonelist(zonelist, high_zoneidx,
nodemask ? : &cpuset_current_mems_allowed,
&preferred_zone);
- if (!preferred_zone) {
- put_mems_allowed();
- return NULL;
- }
+ if (!preferred_zone)
+ goto out;
/* First allocation attempt */
page = get_page_from_freelist(gfp_mask|__GFP_HARDWALL, nodemask, order,
@@ -2295,9 +2321,19 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
page = __alloc_pages_slowpath(gfp_mask, order,
zonelist, high_zoneidx, nodemask,
preferred_zone, migratetype);
- put_mems_allowed();
trace_mm_page_alloc(page, order, gfp_mask, migratetype);
+
+out:
+ /*
+ * When updating a task's mems_allowed, it is possible to race with
+ * parallel threads in such a way that an allocation can fail while
+ * the mask is being updated. If a page allocation is about to fail,
+ * check if the cpuset changed during allocation and if so, retry.
+ */
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+ goto retry_cpuset;
+
return page;
}
EXPORT_SYMBOL(__alloc_pages_nodemask);
@@ -2521,13 +2557,15 @@ void si_meminfo_node(struct sysinfo *val, int nid)
bool skip_free_areas_node(unsigned int flags, int nid)
{
bool ret = false;
+ unsigned int cpuset_mems_cookie;
if (!(flags & SHOW_MEM_FILTER_NODES))
goto out;
- get_mems_allowed();
- ret = !node_isset(nid, cpuset_current_mems_allowed);
- put_mems_allowed();
+ do {
+ cpuset_mems_cookie = get_mems_allowed();
+ ret = !node_isset(nid, cpuset_current_mems_allowed);
+ } while (!put_mems_allowed(cpuset_mems_cookie));
out:
return ret;
}
@@ -3407,25 +3445,33 @@ static void setup_zone_migrate_reserve(struct zone *zone)
if (page_to_nid(page) != zone_to_nid(zone))
continue;
- /* Blocks with reserved pages will never free, skip them. */
- block_end_pfn = min(pfn + pageblock_nr_pages, end_pfn);
- if (pageblock_is_reserved(pfn, block_end_pfn))
- continue;
-
block_migratetype = get_pageblock_migratetype(page);
- /* If this block is reserved, account for it */
- if (reserve > 0 && block_migratetype == MIGRATE_RESERVE) {
- reserve--;
- continue;
- }
+ /* Only test what is necessary when the reserves are not met */
+ if (reserve > 0) {
+ /*
+ * Blocks with reserved pages will never free, skip
+ * them.
+ */
+ block_end_pfn = min(pfn + pageblock_nr_pages, end_pfn);
+ if (pageblock_is_reserved(pfn, block_end_pfn))
+ continue;
- /* Suitable for reserving if this block is movable */
- if (reserve > 0 && block_migratetype == MIGRATE_MOVABLE) {
- set_pageblock_migratetype(page, MIGRATE_RESERVE);
- move_freepages_block(zone, page, MIGRATE_RESERVE);
- reserve--;
- continue;
+ /* If this block is reserved, account for it */
+ if (block_migratetype == MIGRATE_RESERVE) {
+ reserve--;
+ continue;
+ }
+
+ /* Suitable for reserving if this block is movable */
+ if (block_migratetype == MIGRATE_MOVABLE) {
+ set_pageblock_migratetype(page,
+ MIGRATE_RESERVE);
+ move_freepages_block(zone, page,
+ MIGRATE_RESERVE);
+ reserve--;
+ continue;
+ }
}
/*
diff --git a/mm/slab.c b/mm/slab.c
index 83311c9a..cd3ab93 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3267,12 +3267,10 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags)
if (in_interrupt() || (flags & __GFP_THISNODE))
return NULL;
nid_alloc = nid_here = numa_mem_id();
- get_mems_allowed();
if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD))
nid_alloc = cpuset_slab_spread_node();
else if (current->mempolicy)
nid_alloc = slab_node(current->mempolicy);
- put_mems_allowed();
if (nid_alloc != nid_here)
return ____cache_alloc_node(cachep, flags, nid_alloc);
return NULL;
@@ -3295,14 +3293,17 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags)
enum zone_type high_zoneidx = gfp_zone(flags);
void *obj = NULL;
int nid;
+ unsigned int cpuset_mems_cookie;
if (flags & __GFP_THISNODE)
return NULL;
- get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK);
+retry_cpuset:
+ cpuset_mems_cookie = get_mems_allowed();
+ zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+
retry:
/*
* Look through allowed nodes for objects available
@@ -3355,7 +3356,9 @@ retry:
}
}
}
- put_mems_allowed();
+
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !obj))
+ goto retry_cpuset;
return obj;
}
diff --git a/mm/slub.c b/mm/slub.c
index af47188..5710788 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1582,6 +1582,7 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags,
struct zone *zone;
enum zone_type high_zoneidx = gfp_zone(flags);
void *object;
+ unsigned int cpuset_mems_cookie;
/*
* The defrag ratio allows a configuration of the tradeoffs between
@@ -1605,23 +1606,32 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags,
get_cycles() % 1024 > s->remote_node_defrag_ratio)
return NULL;
- get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
- for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
- struct kmem_cache_node *n;
-
- n = get_node(s, zone_to_nid(zone));
-
- if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
- n->nr_partial > s->min_partial) {
- object = get_partial_node(s, n, c);
- if (object) {
- put_mems_allowed();
- return object;
+ do {
+ cpuset_mems_cookie = get_mems_allowed();
+ zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
+ struct kmem_cache_node *n;
+
+ n = get_node(s, zone_to_nid(zone));
+
+ if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
+ n->nr_partial > s->min_partial) {
+ object = get_partial_node(s, n, c);
+ if (object) {
+ /*
+ * Return the object even if
+ * put_mems_allowed indicated that
+ * the cpuset mems_allowed was
+ * updated in parallel. It's a
+ * harmless race between the alloc
+ * and the cpuset update.
+ */
+ put_mems_allowed(cpuset_mems_cookie);
+ return object;
+ }
}
}
- }
- put_mems_allowed();
+ } while (!put_mems_allowed(cpuset_mems_cookie));
#endif
return NULL;
}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 8342119..48febd7 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -715,7 +715,13 @@ static enum page_references page_check_references(struct page *page,
*/
SetPageReferenced(page);
- if (referenced_page)
+ if (referenced_page || referenced_ptes > 1)
+ return PAGEREF_ACTIVATE;
+
+ /*
+ * Activate file-backed executable pages after first usage.
+ */
+ if (vm_flags & VM_EXEC)
return PAGEREF_ACTIVATE;
return PAGEREF_KEEP;
@@ -1061,8 +1067,39 @@ int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file)
ret = -EBUSY;
- if ((mode & ISOLATE_CLEAN) && (PageDirty(page) || PageWriteback(page)))
- return ret;
+ /*
+ * To minimise LRU disruption, the caller can indicate that it only
+ * wants to isolate pages it will be able to operate on without
+ * blocking - clean pages for the most part.
+ *
+ * ISOLATE_CLEAN means that only clean pages should be isolated. This
+ * is used by reclaim when it is cannot write to backing storage
+ *
+ * ISOLATE_ASYNC_MIGRATE is used to indicate that it only wants to pages
+ * that it is possible to migrate without blocking
+ */
+ if (mode & (ISOLATE_CLEAN|ISOLATE_ASYNC_MIGRATE)) {
+ /* All the caller can do on PageWriteback is block */
+ if (PageWriteback(page))
+ return ret;
+
+ if (PageDirty(page)) {
+ struct address_space *mapping;
+
+ /* ISOLATE_CLEAN means only clean pages */
+ if (mode & ISOLATE_CLEAN)
+ return ret;
+
+ /*
+ * Only pages without mappings or that have a
+ * ->migratepage callback are possible to migrate
+ * without blocking
+ */
+ mapping = page_mapping(page);
+ if (mapping && !mapping->a_ops->migratepage)
+ return ret;
+ }
+ }
if ((mode & ISOLATE_UNMAPPED) && page_mapped(page))
return ret;
@@ -1178,7 +1215,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
* anon page which don't already have a swap slot is
* pointless.
*/
- if (nr_swap_pages <= 0 && PageAnon(cursor_page) &&
+ if (nr_swap_pages <= 0 && PageSwapBacked(cursor_page) &&
!PageSwapCache(cursor_page))
break;
@@ -1874,7 +1911,8 @@ static void get_scan_count(struct zone *zone, struct scan_control *sc,
* latencies, so it's better to scan a minimum amount there as
* well.
*/
- if (scanning_global_lru(sc) && current_is_kswapd())
+ if (scanning_global_lru(sc) && current_is_kswapd() &&
+ zone->all_unreclaimable)
force_scan = true;
if (!scanning_global_lru(sc))
force_scan = true;
@@ -2012,8 +2050,9 @@ static inline bool should_continue_reclaim(struct zone *zone,
* inactive lists are large enough, continue reclaiming
*/
pages_for_compaction = (2UL << sc->order);
- inactive_lru_pages = zone_nr_lru_pages(zone, sc, LRU_INACTIVE_ANON) +
- zone_nr_lru_pages(zone, sc, LRU_INACTIVE_FILE);
+ inactive_lru_pages = zone_nr_lru_pages(zone, sc, LRU_INACTIVE_FILE);
+ if (nr_swap_pages > 0)
+ inactive_lru_pages += zone_nr_lru_pages(zone, sc, LRU_INACTIVE_ANON);
if (sc->nr_reclaimed < pages_for_compaction &&
inactive_lru_pages > pages_for_compaction)
return true;
@@ -2088,6 +2127,42 @@ restart:
throttle_vm_writeout(sc->gfp_mask);
}
+/* Returns true if compaction should go ahead for a high-order request */
+static inline bool compaction_ready(struct zone *zone, struct scan_control *sc)
+{
+ unsigned long balance_gap, watermark;
+ bool watermark_ok;
+
+ /* Do not consider compaction for orders reclaim is meant to satisfy */
+ if (sc->order <= PAGE_ALLOC_COSTLY_ORDER)
+ return false;
+
+ /*
+ * Compaction takes time to run and there are potentially other
+ * callers using the pages just freed. Continue reclaiming until
+ * there is a buffer of free pages available to give compaction
+ * a reasonable chance of completing and allocating the page
+ */
+ balance_gap = min(low_wmark_pages(zone),
+ (zone->present_pages + KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
+ KSWAPD_ZONE_BALANCE_GAP_RATIO);
+ watermark = high_wmark_pages(zone) + balance_gap + (2UL << sc->order);
+ watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, 0, 0);
+
+ /*
+ * If compaction is deferred, reclaim up to a point where
+ * compaction will have a chance of success when re-enabled
+ */
+ if (compaction_deferred(zone))
+ return watermark_ok;
+
+ /* If compaction is not ready to start, keep reclaiming */
+ if (!compaction_suitable(zone, sc->order))
+ return false;
+
+ return watermark_ok;
+}
+
/*
* This is the direct reclaim path, for page-allocating processes. We only
* try to reclaim pages from zones which will satisfy the caller's allocation
@@ -2105,8 +2180,9 @@ restart:
* scan then give up on it.
*
* This function returns true if a zone is being reclaimed for a costly
- * high-order allocation and compaction is either ready to begin or deferred.
- * This indicates to the caller that it should retry the allocation or fail.
+ * high-order allocation and compaction is ready to begin. This indicates to
+ * the caller that it should consider retrying the allocation instead of
+ * further reclaim.
*/
static bool shrink_zones(int priority, struct zonelist *zonelist,
struct scan_control *sc)
@@ -2115,7 +2191,7 @@ static bool shrink_zones(int priority, struct zonelist *zonelist,
struct zone *zone;
unsigned long nr_soft_reclaimed;
unsigned long nr_soft_scanned;
- bool should_abort_reclaim = false;
+ bool aborted_reclaim = false;
for_each_zone_zonelist_nodemask(zone, z, zonelist,
gfp_zone(sc->gfp_mask), sc->nodemask) {
@@ -2140,10 +2216,8 @@ static bool shrink_zones(int priority, struct zonelist *zonelist,
* noticable problem, like transparent huge page
* allocations.
*/
- if (sc->order > PAGE_ALLOC_COSTLY_ORDER &&
- (compaction_suitable(zone, sc->order) ||
- compaction_deferred(zone))) {
- should_abort_reclaim = true;
+ if (compaction_ready(zone, sc)) {
+ aborted_reclaim = true;
continue;
}
}
@@ -2165,7 +2239,7 @@ static bool shrink_zones(int priority, struct zonelist *zonelist,
shrink_zone(priority, zone, sc);
}
- return should_abort_reclaim;
+ return aborted_reclaim;
}
static bool zone_reclaimable(struct zone *zone)
@@ -2219,8 +2293,8 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
struct zoneref *z;
struct zone *zone;
unsigned long writeback_threshold;
+ bool aborted_reclaim;
- get_mems_allowed();
delayacct_freepages_start();
if (scanning_global_lru(sc))
@@ -2230,8 +2304,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
sc->nr_scanned = 0;
if (!priority)
disable_swap_token(sc->mem_cgroup);
- if (shrink_zones(priority, zonelist, sc))
- break;
+ aborted_reclaim = shrink_zones(priority, zonelist, sc);
/*
* Don't shrink slabs when reclaiming memory from
@@ -2285,7 +2358,6 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
out:
delayacct_freepages_end();
- put_mems_allowed();
if (sc->nr_reclaimed)
return sc->nr_reclaimed;
@@ -2298,6 +2370,10 @@ out:
if (oom_killer_disabled)
return 0;
+ /* Aborted reclaim to try compaction? don't OOM, then */
+ if (aborted_reclaim)
+ return 1;
+
/* top priority shrink_zones still had more to do? don't OOM, then */
if (scanning_global_lru(sc) && !all_unreclaimable(zonelist, sc))
return 1;
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index c505fd5..c119f33 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -868,7 +868,6 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
struct hdmi_spec_per_pin *per_pin;
struct hdmi_eld *eld;
struct hdmi_spec_per_cvt *per_cvt = NULL;
- int pinctl;
/* Validate hinfo */
pin_idx = hinfo_to_pin_index(spec, hinfo);
@@ -904,11 +903,6 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
snd_hda_codec_write(codec, per_pin->pin_nid, 0,
AC_VERB_SET_CONNECT_SEL,
mux_idx);
- pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
- AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
- snd_hda_codec_write(codec, per_pin->pin_nid, 0,
- AC_VERB_SET_PIN_WIDGET_CONTROL,
- pinctl | PIN_OUT);
snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);
/* Initially set the converter's capabilities */
@@ -1147,11 +1141,17 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hdmi_spec *spec = codec->spec;
int pin_idx = hinfo_to_pin_index(spec, hinfo);
hda_nid_t pin_nid = spec->pins[pin_idx].pin_nid;
+ int pinctl;
hdmi_set_channel_count(codec, cvt_nid, substream->runtime->channels);
hdmi_setup_audio_infoframe(codec, pin_idx, substream);
+ pinctl = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl | PIN_OUT);
+
return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
}
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 5f096a5..191fd78 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5989,6 +5989,7 @@ static const struct hda_codec_preset snd_hda_preset_realtek[] = {
{ .id = 0x10ec0275, .name = "ALC275", .patch = patch_alc269 },
{ .id = 0x10ec0276, .name = "ALC276", .patch = patch_alc269 },
{ .id = 0x10ec0280, .name = "ALC280", .patch = patch_alc269 },
+ { .id = 0x10ec0282, .name = "ALC282", .patch = patch_alc269 },
{ .id = 0x10ec0861, .rev = 0x100340, .name = "ALC660",
.patch = patch_alc861 },
{ .id = 0x10ec0660, .name = "ALC660-VD", .patch = patch_alc861vd },
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 90e93bf..0dc441c 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1381,7 +1381,15 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
}
list_for_each_entry(w, &card->widgets, list) {
- list_del_init(&w->dirty);
+ switch (w->id) {
+ case snd_soc_dapm_pre:
+ case snd_soc_dapm_post:
+ /* These widgets always need to be powered */
+ break;
+ default:
+ list_del_init(&w->dirty);
+ break;
+ }
if (w->power) {
d = w->dapm;
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 828 bytes --]
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2012-08-02 23:53 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-08-02 23:50 Linux 3.2.25 Ben Hutchings
2012-08-02 23:53 ` Ben Hutchings
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®