Re: 2.6.18-rc4-mm3

Re: 2.6.18-rc4-mm3

[Venkatesh Pallipadi]

On Mon, Aug 28, 2006 at 07:00:33PM -0700, Pallipadi, Venkatesh wrote:
>  
> 
> >-----Original Message-----
> >From: Benoit Boissinot [mailto:bboissin@gmail.com] 
> >Sent: Sunday, August 27, 2006 9:00 AM
> >To: Andrew Morton
> >Cc: linux-kernel@vger.kernel.org; Pallipadi, Venkatesh; Brown, Len
> >Subject: Re: 2.6.18-rc4-mm3
> >
> >On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
> >>
> >> 
> >ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2
> >.6.18-rc4/2.6.18-rc4-mm3/
> >>
> >>  git-acpi.patch
> >
> >commit f62d31ee2f2f453b07107465fea54540cab418eb broke my laptop
> >(pentium M, dell D600).
> >I can reliably get a hard lockup (no sysrq) when modprobing ehci_hcd
> >and uhci_hci. It works when reverting the changeset.
> >
> >I can provide cpuinfo or dmesg if necessary.
> >
> >regards,
> >
> >Benoit
> 
> Thanks Benoit for identifying the problem with this patch and reporting
> it. I was able to reproduce it on a system locally and I have tracked
> down the problem. I will send out the updated patch soon and cc it to
> you. 
> 
> Thanks,
> Venki

Benoit,

Attached is the updated patch. Please test it on your system whenever you get
a chance. ACPI C-states and /proc/acpi/processor/*/power should show similar
numbers with or without this patch. It should not hang as before.

Thanks,
Venki


Below is tha patch to support Processor Native C-state using "mwait"
instruction on Intel processors.

Background:
Newer Intel processors (eg: Core Duo), support processor native C-state using
mwait instructions.
Refer: Intel Architecture Software Developer's Manual
http://www.intel.com/design/Pentium4/manuals/253668.htm

Platform firmware exports the support for Native C-state to OS using
ACPI _PDC and _CST methods.
Refer: Intel Processor Vendor-Specific ACPI: Interface Specification
http://www.intel.com/technology/iapc/acpi/downloads/302223.htm


With Processor Native C-state, we use 'mwait' instruction on the processor to
enter different C-states (C1, C2, C3). We won't use the special IO ports to
enter C-state and no SMM mode etc required to enter C-state. Overall this 
will mean better C-state support. 
One major advantage of using mwait for all C-states is, with this and 
"treat interrupt as break event" feature of mwait, we can now get
accurate timing for the time spent in C1, C2, .. states. 

The patch below adds support for both i386 and x86-64 kernels.

Patch against 2.6.18-rc4.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

Index: linux-2.6.18-rc4/arch/i386/kernel/acpi/cstate.c
===================================================================
--- linux-2.6.18-rc4.orig/arch/i386/kernel/acpi/cstate.c
+++ linux-2.6.18-rc4/arch/i386/kernel/acpi/cstate.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
+#include <linux/cpu.h>
 
 #include <acpi/processor.h>
 #include <asm/acpi.h>
@@ -41,5 +42,124 @@ void acpi_processor_power_init_bm_check(
 		flags->bm_check = 1;
 	}
 }
-
 EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
+
+/* The code below handles cstate entry with monitor-mwait pair on Intel*/
+
+struct cstate_entry_s {
+	struct {
+		unsigned int eax;
+		unsigned int ecx;
+	} states[ACPI_PROCESSOR_MAX_POWER];
+};
+static struct cstate_entry_s *cpu_cstate_entry;	/* per CPU ptr */
+
+static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
+
+#define MWAIT_SUBSTATE_MASK	(0xf)
+#define MWAIT_SUBSTATE_SIZE	(4)
+
+#define CPUID_MWAIT_LEAF (5)
+#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1)
+#define CPUID5_ECX_INTERRUPT_BREAK	(0x2)
+
+#define MWAIT_ECX_INTERRUPT_BREAK	(0x1)
+
+#define NATIVE_CSTATE_BEYOND_HALT	(2)
+
+int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
+{
+	struct cstate_entry_s *percpu_entry;
+	struct cpuinfo_x86 *c = cpu_data + cpu;
+
+	cpumask_t saved_mask;
+	int retval;
+	unsigned int eax, ebx, ecx, edx;
+	unsigned int edx_part;
+	unsigned int cstate_type; /* C-state type and not ACPI C-state type */
+	unsigned int num_cstate_subtype;
+
+	if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF )
+		return -1;
+
+	if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT)
+		return -1;
+
+	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
+	percpu_entry->states[cx->index].eax = 0;
+	percpu_entry->states[cx->index].ecx = 0;
+
+	/* Make sure we are running on right CPU */
+	saved_mask = current->cpus_allowed;
+	retval = set_cpus_allowed(current, cpumask_of_cpu(cpu));
+	if (retval)
+		return -1;
+
+	cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
+
+	/* Check whether this particular cx_type (in CST) is supported or not */
+	cstate_type = (cx->address >> MWAIT_SUBSTATE_SIZE) + 1;
+	edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE);
+	num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
+
+	retval = 0;
+	if (num_cstate_subtype < (cx->address & MWAIT_SUBSTATE_MASK)) {
+		retval = -1;
+		goto out;
+	}
+
+	/* mwait ecx extensions INTERRUPT_BREAK should be supported for C2/C3 */
+	if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
+	    !(ecx & CPUID5_ECX_INTERRUPT_BREAK)) {
+		retval = -1;
+		goto out;
+	}
+	percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK;
+
+	/* Use the hint in CST */
+	percpu_entry->states[cx->index].eax = cx->address;
+
+	if (!mwait_supported[cstate_type]) {
+		mwait_supported[cstate_type] = 1;
+		printk(KERN_DEBUG "Monitor-Mwait will be used to enter C-%d "
+		       "state\n", cx->type);
+	}
+
+out:
+	set_cpus_allowed(current, saved_mask);
+	return retval;
+}
+EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
+
+void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
+{
+	unsigned int cpu = smp_processor_id();
+	struct cstate_entry_s *percpu_entry;
+
+	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
+	mwait_idle_with_hints(percpu_entry->states[cx->index].eax,
+	                      percpu_entry->states[cx->index].ecx);
+}
+EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_enter);
+
+static int __init ffh_cstate_init(void)
+{
+	struct cpuinfo_x86 *c = &boot_cpu_data;
+	if (c->x86_vendor != X86_VENDOR_INTEL)
+		return -1;
+
+	cpu_cstate_entry = alloc_percpu(struct cstate_entry_s);
+	return 0;
+}
+
+static void __exit ffh_cstate_exit(void)
+{
+	if (cpu_cstate_entry) {
+		free_percpu(cpu_cstate_entry);
+		cpu_cstate_entry = NULL;
+	}
+}
+
+arch_initcall(ffh_cstate_init);
+__exitcall(ffh_cstate_exit);
Index: linux-2.6.18-rc4/arch/i386/kernel/process.c
===================================================================
--- linux-2.6.18-rc4.orig/arch/i386/kernel/process.c
+++ linux-2.6.18-rc4/arch/i386/kernel/process.c
@@ -235,20 +235,28 @@ EXPORT_SYMBOL_GPL(cpu_idle_wait);
  * We execute MONITOR against need_resched and enter optimized wait state
  * through MWAIT. Whenever someone changes need_resched, we would be woken
  * up from MWAIT (without an IPI).
+ *
+ * New with Core Duo processors, MWAIT can take some hints based on CPU
+ * capability.
  */
-static void mwait_idle(void)
+void mwait_idle_with_hints(unsigned long eax, unsigned long ecx)
 {
-	local_irq_enable();
-
-	while (!need_resched()) {
+	if (!need_resched()) {
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
 		smp_mb();
-		if (need_resched())
-			break;
-		__mwait(0, 0);
+		if (!need_resched())
+			__mwait(eax, ecx);
 	}
 }
 
+/* Default MONITOR/MWAIT with no hints, used for default C1 state */
+static void mwait_idle(void)
+{
+	local_irq_enable();
+	while (!need_resched())
+		mwait_idle_with_hints(0, 0);
+}
+
 void __devinit select_idle_routine(const struct cpuinfo_x86 *c)
 {
 	if (cpu_has(c, X86_FEATURE_MWAIT)) {
Index: linux-2.6.18-rc4/arch/x86_64/kernel/process.c
===================================================================
--- linux-2.6.18-rc4.orig/arch/x86_64/kernel/process.c
+++ linux-2.6.18-rc4/arch/x86_64/kernel/process.c
@@ -235,20 +235,28 @@ void cpu_idle (void)
  * We execute MONITOR against need_resched and enter optimized wait state
  * through MWAIT. Whenever someone changes need_resched, we would be woken
  * up from MWAIT (without an IPI).
+ *
+ * New with Core Duo processors, MWAIT can take some hints based on CPU
+ * capability.
  */
-static void mwait_idle(void)
+void mwait_idle_with_hints(unsigned long eax, unsigned long ecx)
 {
-	local_irq_enable();
-
-	while (!need_resched()) {
+	if (!need_resched()) {
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
 		smp_mb();
-		if (need_resched())
-			break;
-		__mwait(0, 0);
+		if (!need_resched())
+			__mwait(eax, ecx);
 	}
 }
 
+/* Default MONITOR/MWAIT with no hints, used for default C1 state */
+static void mwait_idle(void)
+{
+	local_irq_enable();
+	while (!need_resched())
+		mwait_idle_with_hints(0,0);
+}
+
 void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
 {
 	static int printed;
Index: linux-2.6.18-rc4/drivers/acpi/processor_idle.c
===================================================================
--- linux-2.6.18-rc4.orig/drivers/acpi/processor_idle.c
+++ linux-2.6.18-rc4/drivers/acpi/processor_idle.c
@@ -218,6 +218,23 @@ static void acpi_safe_halt(void)
 
 static atomic_t c3_cpu_count;
 
+/* Common C-state entry for C2, C3, .. */
+static void acpi_cstate_enter(struct acpi_processor_cx *cstate)
+{
+	if (cstate->space_id == ACPI_CSTATE_FFH) {
+		/* Call into architectural FFH based C-state */
+		acpi_processor_ffh_cstate_enter(cstate);
+	} else {
+		int unused;
+		/* IO port based C-state */
+		inb(cstate->address);
+		/* Dummy wait op - must do something useless after P_LVL2 read
+		   because chipsets cannot guarantee that STPCLK# signal
+		   gets asserted in time to freeze execution properly. */
+		unused = inl(acpi_fadt.xpm_tmr_blk.address);
+	}
+}
+
 static void acpi_processor_idle(void)
 {
 	struct acpi_processor *pr = NULL;
@@ -360,11 +377,7 @@ static void acpi_processor_idle(void)
 		/* Get start time (ticks) */
 		t1 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Invoke C2 */
-		inb(cx->address);
-		/* Dummy wait op - must do something useless after P_LVL2 read
-		   because chipsets cannot guarantee that STPCLK# signal
-		   gets asserted in time to freeze execution properly. */
-		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
+		acpi_cstate_enter(cx);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
 
@@ -400,9 +413,7 @@ static void acpi_processor_idle(void)
 		/* Get start time (ticks) */
 		t1 = inl(acpi_fadt.xpm_tmr_blk.address);
 		/* Invoke C3 */
-		inb(cx->address);
-		/* Dummy wait op (see above) */
-		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
+		acpi_cstate_enter(cx);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_fadt.xpm_tmr_blk.address);
 		if (pr->flags.bm_check) {
@@ -624,20 +635,16 @@ static int acpi_processor_get_power_info
 	return 0;
 }
 
-static int acpi_processor_get_power_info_default_c1(struct acpi_processor *pr)
+static int acpi_processor_get_power_info_default(struct acpi_processor *pr)
 {
-
-	/* Zero initialize all the C-states info. */
-	memset(pr->power.states, 0, sizeof(pr->power.states));
-
-	/* set the first C-State to C1 */
-	pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;
-
-	/* the C0 state only exists as a filler in our array,
-	 * and all processors need to support C1 */
+	if (!pr->power.states[ACPI_STATE_C1].valid) {
+		/* set the first C-State to C1 */
+		/* all processors need to support C1 */
+		pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;
+		pr->power.states[ACPI_STATE_C1].valid = 1;
+	}
+	/* the C0 state only exists as a filler in our array */
 	pr->power.states[ACPI_STATE_C0].valid = 1;
-	pr->power.states[ACPI_STATE_C1].valid = 1;
-
 	return 0;
 }
 
@@ -654,12 +661,7 @@ static int acpi_processor_get_power_info
 	if (nocst)
 		return -ENODEV;
 
-	current_count = 1;
-
-	/* Zero initialize C2 onwards and prepare for fresh CST lookup */
-	for (i = 2; i < ACPI_PROCESSOR_MAX_POWER; i++)
-		memset(&(pr->power.states[i]), 0, 
-				sizeof(struct acpi_processor_cx));
+	current_count = 0;
 
 	status = acpi_evaluate_object(pr->handle, "_CST", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
@@ -714,22 +716,39 @@ static int acpi_processor_get_power_info
 		    (reg->space_id != ACPI_ADR_SPACE_FIXED_HARDWARE))
 			continue;
 
-		cx.address = (reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) ?
-		    0 : reg->address;
-
 		/* There should be an easy way to extract an integer... */
 		obj = (union acpi_object *)&(element->package.elements[1]);
 		if (obj->type != ACPI_TYPE_INTEGER)
 			continue;
 
 		cx.type = obj->integer.value;
+		/*
+		 * Some buggy BIOSes won't list C1 in _CST -
+		 * Let acpi_processor_get_power_info_default() handle them later
+		 */
+		if (i == 1 && cx.type != ACPI_STATE_C1)
+			current_count++;
 
-		if ((cx.type != ACPI_STATE_C1) &&
-		    (reg->space_id != ACPI_ADR_SPACE_SYSTEM_IO))
-			continue;
+		cx.address = reg->address;
+		cx.index = current_count + 1;
 
-		if ((cx.type < ACPI_STATE_C2) || (cx.type > ACPI_STATE_C3))
-			continue;
+		cx.space_id = ACPI_CSTATE_SYSTEMIO;
+		if (reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
+			if (acpi_processor_ffh_cstate_probe
+					(pr->id, &cx, reg) == 0) {
+				cx.space_id = ACPI_CSTATE_FFH;
+			} else if (cx.type != ACPI_STATE_C1) {
+				/*
+				 * C1 is a special case where FIXED_HARDWARE
+				 * can be handled in non-MWAIT way as well.
+				 * In that case, save this _CST entry info.
+				 * That is, we retain space_id of SYSTEM_IO for
+				 * halt based C1.
+				 * Otherwise, ignore this info and continue.
+				 */
+				continue;
+			}
+		}
 
 		obj = (union acpi_object *)&(element->package.elements[2]);
 		if (obj->type != ACPI_TYPE_INTEGER)
@@ -934,12 +953,18 @@ static int acpi_processor_get_power_info
 	/* NOTE: the idle thread may not be running while calling
 	 * this function */
 
-	/* Adding C1 state */
-	acpi_processor_get_power_info_default_c1(pr);
+	/* Zero initialize all the C-states info. */
+	memset(pr->power.states, 0, sizeof(pr->power.states));
+
 	result = acpi_processor_get_power_info_cst(pr);
 	if (result == -ENODEV)
 		acpi_processor_get_power_info_fadt(pr);
 
+	if (result)
+		return result;
+
+	acpi_processor_get_power_info_default(pr);
+
 	pr->power.count = acpi_processor_power_verify(pr);
 
 	/*
Index: linux-2.6.18-rc4/include/acpi/pdc_intel.h
===================================================================
--- linux-2.6.18-rc4.orig/include/acpi/pdc_intel.h
+++ linux-2.6.18-rc4/include/acpi/pdc_intel.h
@@ -13,6 +13,7 @@
 #define ACPI_PDC_SMP_C_SWCOORD		(0x0040)
 #define ACPI_PDC_SMP_T_SWCOORD		(0x0080)
 #define ACPI_PDC_C_C1_FFH		(0x0100)
+#define ACPI_PDC_C_C2C3_FFH		(0x0200)
 
 #define ACPI_PDC_EST_CAPABILITY_SMP	(ACPI_PDC_SMP_C1PT | \
 					 ACPI_PDC_C_C1_HALT | \
@@ -23,8 +24,10 @@
 					 ACPI_PDC_SMP_P_SWCOORD | \
 					 ACPI_PDC_P_FFH)
 
-#define ACPI_PDC_C_CAPABILITY_SMP	(ACPI_PDC_SMP_C2C3 | \
-					 ACPI_PDC_SMP_C1PT | \
-					 ACPI_PDC_C_C1_HALT)
+#define ACPI_PDC_C_CAPABILITY_SMP	(ACPI_PDC_SMP_C2C3  | \
+					 ACPI_PDC_SMP_C1PT  | \
+					 ACPI_PDC_C_C1_HALT | \
+					 ACPI_PDC_C_C1_FFH  | \
+					 ACPI_PDC_C_C2C3_FFH)
 
 #endif				/* __PDC_INTEL_H__ */
Index: linux-2.6.18-rc4/include/acpi/processor.h
===================================================================
--- linux-2.6.18-rc4.orig/include/acpi/processor.h
+++ linux-2.6.18-rc4/include/acpi/processor.h
@@ -29,6 +29,9 @@
 #define DOMAIN_COORD_TYPE_SW_ANY	0xfd
 #define DOMAIN_COORD_TYPE_HW_ALL	0xfe
 
+#define ACPI_CSTATE_SYSTEMIO	(0)
+#define ACPI_CSTATE_FFH		(1)
+
 /* Power Management */
 
 struct acpi_processor_cx;
@@ -58,6 +61,8 @@ struct acpi_processor_cx {
 	u8 valid;
 	u8 type;
 	u32 address;
+	u8 space_id;
+	u8 index;
 	u32 latency;
 	u32 latency_ticks;
 	u32 power;
@@ -206,6 +211,9 @@ void arch_acpi_processor_init_pdc(struct
 #ifdef ARCH_HAS_POWER_INIT
 void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
 					unsigned int cpu);
+int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+		struct acpi_processor_cx *cx, struct acpi_power_register *reg);
+void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
 #else
 static inline void acpi_processor_power_init_bm_check(struct
 						      acpi_processor_flags
@@ -214,6 +222,16 @@ static inline void acpi_processor_power_
 	flags->bm_check = 1;
 	return;
 }
+static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
+{
+	return -1;
+}
+static inline void acpi_processor_ffh_cstate_enter(
+		struct acpi_processor_cx *cstate)
+{
+	return;
+}
 #endif
 
 /* in processor_perflib.c */
Index: linux-2.6.18-rc4/include/asm-i386/processor.h
===================================================================
--- linux-2.6.18-rc4.orig/include/asm-i386/processor.h
+++ linux-2.6.18-rc4/include/asm-i386/processor.h
@@ -312,6 +312,8 @@ static inline void __mwait(unsigned long
 		: :"a" (eax), "c" (ecx));
 }
 
+extern void mwait_idle_with_hints(unsigned long eax, unsigned long ecx);
+
 /* from system description table in BIOS.  Mostly for MCA use, but
 others may find it useful. */
 extern unsigned int machine_id;
Index: linux-2.6.18-rc4/include/asm-x86_64/processor.h
===================================================================
--- linux-2.6.18-rc4.orig/include/asm-x86_64/processor.h
+++ linux-2.6.18-rc4/include/asm-x86_64/processor.h
@@ -469,6 +469,8 @@ static inline void __mwait(unsigned long
 		: :"a" (eax), "c" (ecx));
 }
 
+extern void mwait_idle_with_hints(unsigned long eax, unsigned long ecx);
+
 #define stack_current() \
 ({								\
 	struct thread_info *ti;					\

Re: 2.6.18-rc4-mm3

[Benoit Boissinot]

On Wed, Aug 30, 2006 at 11:15:08AM -0700, Venkatesh Pallipadi wrote:
> On Mon, Aug 28, 2006 at 07:00:33PM -0700, Pallipadi, Venkatesh wrote:
> >  
> > 
> > >-----Original Message-----
> > >From: Benoit Boissinot [mailto:bboissin@gmail.com] 
> > >Sent: Sunday, August 27, 2006 9:00 AM
> > >To: Andrew Morton
> > >Cc: linux-kernel@vger.kernel.org; Pallipadi, Venkatesh; Brown, Len
> > >Subject: Re: 2.6.18-rc4-mm3
> > >
> > >On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
> > >>
> > >> 
> > >ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2
> > >.6.18-rc4/2.6.18-rc4-mm3/
> > >>
> > >>  git-acpi.patch
> > >
> > >commit f62d31ee2f2f453b07107465fea54540cab418eb broke my laptop
> > >(pentium M, dell D600).
> > >I can reliably get a hard lockup (no sysrq) when modprobing ehci_hcd
> > >and uhci_hci. It works when reverting the changeset.
> > >
> > >I can provide cpuinfo or dmesg if necessary.
> > >
> 
> Attached is the updated patch. Please test it on your system whenever you get
> a chance. ACPI C-states and /proc/acpi/processor/*/power should show similar
> numbers with or without this patch. It should not hang as before.
> 

It looks like it's running fine! So far I didn't have any hang whereas
it was completely reproducable before.

thanks,

Benoit
-- 
powered by bash/screen/(urxvt/fvwm|linux-console)/gentoo/gnu/linux OS

RE: 2.6.18-rc4-mm3

[Pallipadi, Venkatesh]

 

>-----Original Message-----
>From: Benoit Boissinot [mailto:bboissin@gmail.com] 
>Sent: Sunday, August 27, 2006 9:00 AM
>To: Andrew Morton
>Cc: linux-kernel@vger.kernel.org; Pallipadi, Venkatesh; Brown, Len
>Subject: Re: 2.6.18-rc4-mm3
>
>On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
>>
>> 
>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2
>.6.18-rc4/2.6.18-rc4-mm3/
>>
>>  git-acpi.patch
>
>commit f62d31ee2f2f453b07107465fea54540cab418eb broke my laptop
>(pentium M, dell D600).
>I can reliably get a hard lockup (no sysrq) when modprobing ehci_hcd
>and uhci_hci. It works when reverting the changeset.
>
>I can provide cpuinfo or dmesg if necessary.
>
>regards,
>
>Benoit

Thanks Benoit for identifying the problem with this patch and reporting
it. I was able to reproduce it on a system locally and I have tracked
down the problem. I will send out the updated patch soon and cc it to
you. 

Thanks,
Venki

RE: 2.6.18-rc4-mm3

[Pallipadi, Venkatesh]

OK. This is the second system on which failure has happened. Can you
please send me the acpidump output (You can get latest pmtools from here
- http://www.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/ ).
Unfortunately I am not able to reproduce this failure on my local
systems yet. I will try to find out what may be going wrong.

Andrew: Can you revert the below patch until the issue is resolved.

Thanks,
Venki

>-----Original Message-----
>From: Benoit Boissinot [mailto:bboissin@gmail.com] 
>Sent: Sunday, August 27, 2006 9:00 AM
>To: Andrew Morton
>Cc: linux-kernel@vger.kernel.org; Pallipadi, Venkatesh; Brown, Len
>Subject: Re: 2.6.18-rc4-mm3
>
>On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
>>
>> 
>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2
>.6.18-rc4/2.6.18-rc4-mm3/
>>
>>  git-acpi.patch
>
>commit f62d31ee2f2f453b07107465fea54540cab418eb broke my laptop
>(pentium M, dell D600).
>I can reliably get a hard lockup (no sysrq) when modprobing ehci_hcd
>and uhci_hci. It works when reverting the changeset.
>
>I can provide cpuinfo or dmesg if necessary.
>
>regards,
>
>Benoit
>

2.6.18-rc4-mm3

[Andrew Morton]

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/

- autofs mounting of nfs submounts remains broken.



Boilerplate:

- See the `hot-fixes' directory for any important updates to this patchset.

- To fetch an -mm tree using git, use (for example)

  git fetch git://git.kernel.org/pub/scm/linux/kernel/git/smurf/linux-trees.git v2.6.16-rc2-mm1

- -mm kernel commit activity can be reviewed by subscribing to the
  mm-commits mailing list.

        echo "subscribe mm-commits" | mail majordomo@vger.kernel.org

- If you hit a bug in -mm and it is not obvious which patch caused it, it is
  most valuable if you can perform a bisection search to identify which patch
  introduced the bug.  Instructions for this process are at

        http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt

  But beware that this process takes some time (around ten rebuilds and
  reboots), so consider reporting the bug first and if we cannot immediately
  identify the faulty patch, then perform the bisection search.

- When reporting bugs, please try to Cc: the relevant maintainer and mailing
  list on any email.

- Semi-daily snapshots of the -mm lineup are uploaded to
  ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/mm/ and are announced on
  the mm-commits list.



Changes since 2.6.18-rc4-mm2:

 origin.patch
 git-acpi.patch
 git-alsa.patch
 git-agpgart.patch
 git-arm.patch
 git-block.patch
 git-cifs.patch
 git-cpufreq.patch
 git-drm.patch
 git-geode.patch
 git-gfs2.patch
 git-ia64.patch
 git-ieee1394.patch
 git-input.patch
 git-intelfb.patch
 git-kbuild.patch
 git-libata-all.patch
 git-lxdialog.patch
 git-mtd.patch
 git-netdev-all.patch
 git-net.patch
 git-nfs.patch
 git-ocfs2.patch
 git-parisc.patch
 git-pcmcia.patch
 git-powerpc.patch
 git-r8169.patch
 git-sas.patch
 git-s390.patch
 git-scsi-misc.patch
 git-scsi-rc-fixes.patch
 git-scsi-target.patch
 git-supertrak.patch
 git-watchdog.patch
 git-xfs.patch
 git-cryptodev.patch

 git trees

-add-imacfb-documentation-and-detection.patch
-adfs-error-message-fix.patch
-initialize-parts-of-udf-inode-earlier-in-create.patch
-fix-hrtimer-percpu-usage-typo.patch
-fix-x86_64-mm-allow-users-to-force-a-panic-on-nmi.patch
-dm-bug-oops-fix.patch
-change-panic_on_oops-message-to-fatal-exception.patch
-sys_getppid-oopses-on-debug-kernel-v2.patch
-futex_handle_fault-always-fails.patch
-fbdev-include-backlighth-only-when-__kernel__-is-defined.patch
-workqueue-remove-lock_cpu_hotplug.patch
-fuse-fix-error-case-in-fuse_readpages.patch
-asus_acpi-w3000-support.patch
-acpi-change-gfp_atomic-to-gfp_kernel-for-non-atomic.patch
-sound-pci-fm801-use-array_size-macro.patch
-emu10k1x-simplify-around-pci_register_driver.patch
-gregkh-driver-add-stable-branch-to-maintainers-file.patch
-gregkh-driver-pr_debug-should-not-be-used-in-drivers.patch
-add-__must_check-to-device-management-code.patch
-add-config_enable_must_check.patch
-v4l-dev2-handle-__must_check.patch
-drivers-base-platform-notify-needs-to-occur.patch
-sysfs-add-proper-sysfs_init-prototype.patch
-drm-build-fix.patch
-git-drm-oops-fix.patch
-i2c-build-fixes-tps65010.patch
-config_pm=n-slim-drivers-scsi-sata_sil.patch
-mtd-nand-fix-ams-delta-after-core-conversion.patch
-e100-fix-mdio-mdio-x.patch
-e100-increment-version-to-3510-k4.patch
-e1000-same-cosmetic-fix-as-earlier-sent-out-for-ipv4.patch
-e1000-remove-0x1000-as-supported-device.patch
-e1000-explicitly-power-up-the-phy-during-loopback-testing.patch
-e1000-explicit-locking-for-two-ethtool-path-functions.patch
-e1000-allow-nvm-to-setup-lplu-for-igp2-and-igp3.patch
-e1000-force-full-dma-clocking-for-10-100-speed.patch
-e1000-disable-aggressive-clocking-on-esb2-with-serdes-port.patch
-e1000-increment-driver-version-to-719-k6.patch
-ixgb-add-cx4-phy-type-detection-and-subdevice-id.patch
-ixgb-fix-cache-miss-due-to-miscalculation.patch
-ixgb-increment-version-to-10109-k4.patch
-82596-section-fixes.patch
-ac3200-section-fixes.patch
-cops-section-fix.patch
-cs89x0-section-fix.patch
-at1700-section-fix.patch
-e2100-section-fix.patch
-eepro-section-fix.patch
-eexpress-section-fix.patch
-es3210-section-fix.patch
-eth16i-section-fix.patch
-lance-section-fix.patch
-lne390-section-fix.patch
-ni52-section-fix.patch
-ibmtr-section-fix.patch
-smctr-section-fix.patch
-wd-section-fix.patch
-ni65-section-fix.patch
-seeq8005-section-fix.patch
-winbond-840-section-fix.patch
-fealnx-section-fix.patch
-sundance-section-fix.patch
-freescale-qe-ucc-gigabit-ethernet-driver.patch
-s2io-build-fix.patch
-net-add-netconsole-support-to-dm9000-driver.patch
-smc911x-re-release-spinlock-on-spurious-interrupt.patch
-via-rhine-napi-support.patch
-via-rhine-napi-poll-enable.patch
-via-rhine-add-option-avoid_d3-work-around-broken-bioses-2.patch
-lockdep-fix-smc91x.patch
-build-fixes-smc91x.patch
-add-ethtool-g-support-to-spidernet-network-driver.patch
-skge-remember-to-run-netif_poll_disable.patch
-s390-fix-arp_tbl-lock-usage-in-qeth.patch
-xircom_cb-wire-up-errors-from-pci_register_driver.patch
-pal-support-of-the-fixed-phy.patch
-fs_enet-use-pal-for-mii-management.patch
-ppc32-board-specific-part-of-fs_enet-update.patch
-velocity-remove-an-unused-function-from-the-header.patch
-net-drivers-net-via-rhinec-pci_module_init-to-pci_register_driver-conversion.patch
-lockdep-fix-sk_dst_check-deadlock.patch
-ppp-handle-kmalloc-failures.patch
-xt_physdev-build-fix.patch
-fix-potential-stack-overflow-in-net-core-utilsc.patch
-net-atm-compile-error-on-arm.patch
-tg3-convert-the-pci_device_id-table-to-pci_device.patch
-gregkh-pci-pciehp-make-pciehp-build-for-powerpc.patch
-gregkh-pci-pci-remove-dead-hotplug_pci_shpc_phprm_legacy-option.patch
-gregkh-pci-pci-use-pci_bios-as-last-fallback.patch
-pci-use-pcbios-as-last-fallback.patch
-pci-i386-mmconfig-dont-forget-bus-number-when-setting-fallback_slots-bits.patch
-pci-fix-ich6-quirks.patch
-aic7-cleanup-module_parm_desc-strings.patch
-buslogic-gcc-41-warning-fixes.patch
-scsi-limit-recursion-when-flushing-shost-starved_list.patch
-sg-nopage-page-refcounting-fix.patch
-gregkh-usb-usb-unusual_devs-entry-for-a-vox-wsx-300er-mp3-player.patch
-gregkh-usb-usb-removed-a-unbalanced-endif-from-ohci-au1xxx.c.patch
-gregkh-usb-usb-appletouch-fix-atp_disconnect.patch
-gregkh-usb-usb-additional-pid-for-sharp-w-zero3.patch
-gregkh-usb-usb-ftdi_sio-driver-new-pids.patch
-gregkh-usb-usb-usbtest.c-unsigned-retval-makes-ctrl_out-return-0-in-case-of-error.patch
-x86_64-mm-i386-kprobes-error_code.patch
-x86_64-mm-re-positioning-the-bss-segment.patch
-x86_64-wire-up-oops_enter-oops_exit.patch
-kprobes-x86_64-add-kprobe_end-macro-for-popsection.patch
-git-cryptodev-padlock-generic-build-fix.patch
-git-crypto-alignment-build-fixes.patch
-fix-up-lockdep-trace-in-fs-execc.patch
-intelfbhwc-intelfbhw_get_p1p2-defined-but-not-used.patch

 Merged into mainline or a subsystem tree.

+char-moxac-fix-endianess-and-multiple-card-issues.patch
+char-moxac-fix-endianess-and-multiple-card-issues-tidy.patch
+matroxfb-fix-jittery-display-on-non-ppc-systems.patch
+vcsa-attribute-bits-ioctlvt_gethifontmask.patch
+futex_find_get_task-remove-an-obscure-exit_zombie-check.patch
+mtd-nand-fix-ams-delta-after-core-conversion.patch
+fix-for-minix-crash.patch
+ext2-prevent-div-by-zero-on-corrupted-fs.patch
+spectrum_cs-fix-firmware-uploading-errors.patch
+ext3-filesystem-bogus-enospc-with-reservation-fix.patch
+ufs-write-to-hole-in-big-file.patch
+ufs-truncate-correction.patch
+remove-redundent-up-in-stop_machine.patch
+documentation-update-for-relay-interface.patch
+eventpollc-compile-fix.patch
+md-avoid-backward-event-updates-in-md-superblock-when-degraded.patch
+md-fix-recent-breakage-of-md-raid1-array-checking.patch
+cpuset-top_cpuset-tracks-hotplug-changes-to-cpu_online_map.patch
+manage-jbd-allocations-from-its-own-slabs.patch
+manage-jbd-allocations-from-its-own-slabs-tidy.patch
+register_one_node-compile-fix.patch
+sun-disk-label-fix-signed-int-usage-for-sector-count.patch
+sun-disk-label-fix-signed-int-usage-for-sector-count-fix.patch
+config_acpi_srat-numa-build-fix.patch
+lockdep-annotate-idescsi_pc_intr.patch
+lockdep-annotate-reiserfs.patch
+fix-up-lockdep-trace-in-fs-execc.patch
+proc-meminfo-dont-put-spaces-in-names.patch
+x86-numaq-kconfig-fix.patch
+cdrom-gdsc-fix-printk-format-warning.patch

 2.6.18 queue.

+asus_acpi-fix-proc-files-parsing.patch
+asus_acpi-dont-printk-on-writing-garbage-to-proc-files.patch

 ACPI driver fixes

+agph-constify-struct-agp_bridge_dataversion.patch

 AGP cleanup

+gregkh-driver-add-__must_check-to-device-management-code.patch
+gregkh-driver-add-config_enable_must_check.patch
+gregkh-driver-v4l-dev2-handle-__must_check.patch
+gregkh-driver-drivers-base-platform-notify-needs-to-occur-before-drivers-attach-to-the-device.patch
+gregkh-driver-drivers-base-check-errors.patch
+gregkh-driver-sysfs-add-proper-sysfs_init-prototype.patch
+gregkh-driver-nozomi.patch

 driver tree updates

-drm-minor-fixes.patch

 Dropped.

+ks0127-wire-up-i2c_add_driver-return-value.patch
+drivers-media-video-bt866c-array-overflows.patch

 DVB updates

+gregkh-i2c-i2c-tps65010-build-fixes.patch
+gregkh-i2c-hwmon-abituguru-timeout-fixes.patch
+gregkh-i2c-i2c-__must_check-fixes.patch
+gregkh-i2c-i2c-__must_check-fixes-i2c-dev.patch
+gregkh-i2c-i2c-algo-sibyte-cleanups.patch
+gregkh-i2c-i2c-algo-sibyte-merge-in-i2c-sibyte.patch
+gregkh-i2c-i2c-sibyte-drop-kip-walker-address.patch
+gregkh-i2c-i2c-au1550-fix-timeout-problem.patch
+gregkh-i2c-i2c-au1550-add-smbus-functionality-flag.patch
+gregkh-i2c-i2c-au1550-add-au1200-support.patch
+gregkh-i2c-i2c-fix-copy-n-paste-in-subsystem-Kconfig.patch
+gregkh-i2c-i2c-matroxfb-c99-struct-init.patch
+gregkh-i2c-i2c-algo-bit-kill-mdelay.patch
+gregkh-i2c-i2c-bus-driver-for-TI-OMAP-boards.patch
+gregkh-i2c-i2c-isa-plan-for-removal.patch
+gregkh-i2c-i2c-stub-add-chip_addr-param.patch

 I2C tree updates

+input-i8042-get-rid-of-polling-timer.patch

 Yet another attempt at this input layer cleanup.

+git-intelfb-fixup.patch

 Fix rejects in git-intelfb.patch

+libata-add-40pin-short-cable-support-honour-drive.patch

 ATA fix

-1-of-2-jmicron-driver-hard_port_no-fix.patch

 Folded into 1-of-2-jmicron-driver.patch

+1-of-2-jmicron-driver-fix.patch

 Fix it.

+via-pata-controller-xfer-fixes-fix.patch

 Fix via-pata-controller-xfer-fixes.patch

+e1000-e1000_probe-resources-cleanup.patch

 net driver cleanup

+signedness-issue-in-drivers-net-phy-phy_devicec.patch
+b44-fix-eeprom-endianess-issue.patch
+forcedeth-decouple-vlan-and-rx-checksum-dependency.patch

 net driver fixes.

+git-net-fixup.patch

 Fix rejects in git-net.patch

+atm-he-fix-section-mismatch.patch

 ATM driver section fix.

+git-nfs-fixup.patch

 Fix rejects in git-nfs.patch

+drivers-net-pcmcia-xirc2ps_csc-remove-unused-label.patch

 PCMCIA driver cleanup.

+gregkh-pci-pci-use-pcbios-as-last-fallback.patch
+gregkh-pci-pci-i386-mmconfig-don-t-forget-bus-number-when-setting-fallback_slots-bits.patch
+gregkh-pci-pci-fix-ich6-quirks.patch
+gregkh-pci-cpci-hotplug-fix-resource-assignment.patch
+gregkh-pci-pci-kerneldoc-correction-in-pci-driver.patch

 PCI tree updates

-revert-gregkh-pci-pci-use-pci_bios-as-last-fallback.patch

 Unneeded (hopefully)

+pci-add-ich7-8-acpi-gpio-io-resource-quirks.patch

 More PCI quirks.

+signedness-issue-in-drivers-scsi-iprc.patch
+signedness-issue-in-drivers-scsi-osstc.patch

 SCSI driver fixlets.

-git-scsi-target-ibmvscsi-build-fix.patch

 Unneeded

+gregkh-usb-usb-pl2303-removed-support-for-oti-s-dku-5-clone-cable.patch
+gregkh-usb-unusual_devs-update-for-ucr-61s2b.patch
+gregkh-usb-uhci-increase-resume-detect-off-delay.patch
+gregkh-usb-usbcore-make-hcd_endpoint_disable-wait-for-queue-to-drain.patch
+gregkh-usb-usbcore-khubd-and-busy-port-handling.patch
+gregkh-usb-usb-skeleton-small-update.patch
+gregkh-usb-usb-storage-add-rio-karma-eject-support.patch

 USB tree updates.

+gregkh-usb-usb-storage-add-rio-karma-eject-support-fix.patch

 Fix it.

+turn-usb_resume_both-into-static-inline.patch
+signedness-issue-in-drivers-usb-gadget-etherc.patch
+adutux-fix-printk-format-warnings.patch
+aircable-fix-printk-format-warnings.patch

 USB fixes.

+x86_64-mm-disable-mmconfig-e820-heuristic.patch
+x86_64-mm-remove-safe_smp_processor_id.patch
+x86_64-mm-early_ioremap-warning.patch
+x86_64-mm-pte-exec.patch
+x86_64-mm-cpa-pse-cleanup.patch
+x86_64-mm-remove-apic-version-capability.patch
+x86_64-mm-cleanup-apic-id-checking.patch
+x86_64-mm-mpparse-style.patch
+x86_64-mm-nmi-irqtrace-check.patch
+x86_64-mm-fix-head.S-warning.patch
+x86_64-mm-recover-1mb.patch
+x86_64-mm-remove-e820-fallback.patch
+x86_64-mm-optimize-hweight64-for-x86_64.patch
+x86_64-mm-reload-cs-in-head.patch
+x86_64-mm-note-section.patch
+x86_64-mm-e820-comment.patch
+x86_64-mm-spin-irqs-enabled.patch
+x86_64-mm-remove-alternative-smp.patch
+x86_64-mm-i386-remove-alternative-smp.patch
+x86_64-mm-cleanup-spinlock.patch
+x86_64-mm-dmi-mmconfig-intel-sdv.patch

 x86_64 tree updates

+mm-x86_64-mm-generic-getcpu-syscall-tweaks.patch

 Cleanup

+git-cryptodev-fixup.patch
+git-cryptodev-fixup-2.patch

 Fix rejects in git-cryptodev.patch

+adix-tree-rcu-lockless-readside-fix-3.patch
+radix-tree-cleanup-radix_tree_deref_slot-and.patch
+cleanup-radix_tree_derefreplace_slot-calling-conventions.patch

 More radix-tree work.

+standardize-pxx_page-macros-fix.patch

 Fix standardize-pxx_page-macros.patch

+zvc-scale-thresholds-depending-on-the-size-of-the-system.patch
+zvc-scale-thresholds-depending-on-the-size-of-the-system-fix.patch
+extract-the-allocpercpu-functions-from-the-slab-allocator.patch
+introduce-mechanism-for-registering-active-regions-of-memory.patch
+have-power-use-add_active_range-and-free_area_init_nodes.patch
+have-x86-use-add_active_range-and-free_area_init_nodes.patch
+have-x86-use-add_active_range-and-free_area_init_nodes-fix.patch
+have-x86_64-use-add_active_range-and-free_area_init_nodes.patch
+have-ia64-use-add_active_range-and-free_area_init_nodes.patch
+account-for-memmap-and-optionally-the-kernel-image-as-holes.patch
+replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone.patch
+zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable.patch
+zone_reclaim-dynamic-slab-reclaim.patch
+zone_reclaim-dynamic-slab-reclaim-tidy.patch

 Memory management updates

+selinux-1-3-eliminate-inode_security_set_security.patch
+selinux-2-3-change-isec-semaphore-to-a-mutex.patch
+selinux-2-3-change-isec-semaphore-to-a-mutex-vs-git-net.patch
+selinux-3-3-convert-sbsec-semaphore-to-a-mutex.patch
+selinux-fix-tty-locking.patch

 SELinux updates

+avr32-set-kbuild_defconfig.patch
+avr32-kprobes-compile-fix.patch
+avr32-asm-ioh-should-include-asm-byteorderh.patch
+avr32-fix-output-constraints-in-asm-bitopsh.patch
+avr32-standardize-pxx_page-macros-fix.patch

 Update avr32 architecture.

+x86-put-note-sections-into-a-pt_note-segment-in-vmlinux-fix.patch

 Fix x86-put-note-sections-into-a-pt_note-segment-in-vmlinux.patch

-add-force-of-use-mmconfig.patch
-add-efi-e820-memory-mapping-on-x86.patch
-fix-boot-on-efi-32-bit-machines.patch

 Dropped.

+mtrr-add-lock-annotations-for-prepare_set-and.patch
+x86-remove-default_ldt-and-simplify-ldt-setting.patch

 x86 updates.

-kill-default_ldt.patch

 Updated.

+alpha-fix-alpha_ev56-dependencies-typo.patch

 Alpha fixlet.

+xtensa-ptrace-exit_zombie-fix.patch

 xtensa fix.

+copy_process-cosmetic-ioprio-tweak.patch
+autofs4-autofs4_follow_link-false-negative-fix.patch
+autofs4-pending-flag-not-cleared-on-mount-fail.patch
+futex_find_get_task-dont-take-tasklist_lock.patch
+sys_get_robust_list-dont-take-tasklist_lock.patch
+docbook-fix-segfault-in-docprocc.patch
+solaris-emulation-incorrect-tty-locking.patch
+solaris-emulation-incorrect-tty-locking-fix.patch
+solaris-emulation-incorrect-tty-locking-fix-2.patch
+tty-fix-bits-and-note-more-bits-to-fix.patch
+windfarm_smu_satc-simplify-around-i2c_add_driver.patch
+make-spinlock-rwlock-annotations-more-accurate-by-using.patch
+replace-_spin_trylock-with-spin_trylock-in-the-irq.patch
+ext3-turn-on-reservation-dump-on-block-allocation-errors.patch
+ext3-add-more-comments-in-block-allocation-reservation-code.patch
+generic-boolean.patch
+fs-ntfs-conversion-to-generic-boolean.patch
+fs-jfs-conversion-to-generic-boolean.patch
+block_devc-mutex_lock_nested-fix.patch
+fix-mem_write-return-value.patch
+doc-fix-kernel-parameters-quiet.patch
+pass-a-lock-expression-to-__cond_lock-like-__acquire-and.patch
+cramfs-rewrite-init_cramfs_fs.patch
+freevxfs-fix-leak-on-error-path.patch
+cramfs-make-cramfs_uncompress_exit-return-void.patch
+9p-fix-leak-on-error-path.patch
+ban-register_filesystemnull.patch
+jbd-use-build_bug_on-in-journal-init.patch
+more-ext3-16t-overflow-fixes.patch
+ext3-inode-numbers-are-unsigned-long.patch
+lockdep-core-add-enable-disable_irq_irqsave-irqrestore-apis.patch
+really-ignore-kmem_cache_destroy-return-value.patch
+make-kmem_cache_destroy-return-void.patch
+set-exit_dead-state-in-do_exit-not-in-schedule.patch
+kill-pf_dead-flag.patch
+introduce-task_dead-state.patch
+fix-typo-in-rtc-kconfig.patch

 Misc.

+pass-sparse-the-lock-expression-given-to-lock-annotations.patch

 Update for new sparse features.

+ntp-add-ntp_update_frequency-fix.patch

 Fix ntp-add-ntp_update_frequency.patch

+kill-wall_jiffies.patch

 Time management cleanup.

+reiserfs-eliminate-minimum-window-size-for-bitmap-searching.patch

 reiserfs speedup/simplification.

+fs-cache-make-kafs-use-fs-cache-12-fix.patch

 Fix fs-cache-make-kafs-use-fs-cache-12.patch

+fs-cache-cachefiles-a-cache-that-backs-onto-a-mounted-filesystem-warning-fixes.patch

 Fix fs-cache-cachefiles-a-cache-that-backs-onto-a-mounted-filesystem.patch
 some more.

+hdaps-add-explicit-hardware-configuration-functions-fix-fix.patch

 Fix hdaps-add-explicit-hardware-configuration-functions.patch some more.

+generic-ioremap_page_range-x86_64-conversion-fix.patch

 Fix generic-ioremap_page_range-x86_64-conversion.patch

+support-piping-into-commands-in-proc-sys-kernel-core_pattern-fix-2.patch

 Fix support-piping-into-commands-in-proc-sys-kernel-core_pattern.patch some
 more.

+kprobes-make-kprobe-modules-more-portable.patch
+kprobes-make-kprobe-modules-more-portable-update.patch
+add-regs_return_value-helper.patch
+update-documentation-kprobestxt.patch
+update-documentation-kprobestxt-update.patch

 kprobes updates.

+knfsd-split-svc_serv-into-pools-fix.patch

 Fix knfsd-split-svc_serv-into-pools.patch

+nfsd-lockdep-annotation.patch
+knfsd-nfsd-lockdep-annotation-fix.patch
+knfsd-call-lockd_down-when-closing-a-socket-via-a-write-to-nfsd-portlist.patch
+knfsd-protect-update-to-sn_nrthreads-with-lock_kernel.patch
+knfsd-fixed-handling-of-lockd-fail-when-adding-nfsd-socket.patch
+knfsd-replace-two-page-lists-in-struct-svc_rqst-with-one.patch
+knfsd-avoid-excess-stack-usage-in-svc_tcp_recvfrom.patch
+knfsd-prepare-knfsd-for-support-of-rsize-wsize-of-up-to-1mb-over-tcp.patch
+knfsd-allow-max-size-of-nfsd-payload-to-be-configured.patch
+knfsd-make-nfsd-readahead-params-cache-smp-friendly.patch
+knfsd-knfsd-cache-ipmap-per-tcp-socket.patch

 NFSD updates.

+zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable-swap_prefetch.patch

 Update swap prefetch for mm changes.

+ecryptfs-mntput-lower-mount-on-umount_begin.patch
+vfs-make-filldir_t-and-struct-kstat-deal-in-64-bit-inode-numbers-ecryptfs.patch
+make-kmem_cache_destroy-return-void-ecryptfs.patch

 ecryptfs updates

-namespaces-add-nsproxy-dont-include-compileh.patch
+namespaces-add-nsproxy-move-init_nsproxy-into-kernel-nsproxyc.patch
-namespaces-utsname-switch-to-using-uts-namespaces-uml-fix.patch
-namespaces-utsname-use-init_utsname-when-appropriate-gmidi.patch
-namespaces-utsname-use-init_utsname-when-appropriate-print_kernel_version.patch
-namespaces-utsname-sysctl-hack-fix.patch

 namespace patch consolidation.

+make-kmem_cache_destroy-return-void-reiser4.patch

 Fix reiser4 for other -mm patches.

+atyfb-possible-cleanups.patch
+mbxfb-fix-a-chip-bug-resulting-in-wrong-pixclock.patch
+mbxfb-fix-framebuffer-size-smaller-than-requested.patch
+fbcon-make-3-functions-static.patch
+vt-proper-prototypes-for-some-console-functions.patch
+sstfb-clean-ups.patch

 fbdev updates.

+md-fix-issues-with-referencing-rdev-in-md-raid1.patch
+md-new-sysfs-interface-for-setting-bits-in-the-write-intent-bitmap.patch
+md-remove-unnecessary-variable-x-in-stripe_to_pdidx.patch

 MD updates

+srcu-3-rcu-variant-permitting-read-side-blocking-srcu-add-lock-annotations.patch

 Add lock annotation to SRCU.

+rcu-add-fake-writers-to-rcutorture-tidy.patch

 Clean up rcu-add-fake-writers-to-rcutorture.patch

+acpi_format_exception-debug.patch

 ACPI debugging.



All 1658 patches:

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/patch-list

Re: 2.6.18-rc4-mm3

[Benoit Boissinot]

On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
>
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
>
> Changes since 2.6.18-rc4-mm2:
>
>  git-net.patch

It introduces a new warning for me:
net/netfilter/xt_CONNMARK.c: In function 'target':
net/netfilter/xt_CONNMARK.c:59: warning: implicit declaration of
function 'nf_conntrack_event_cache'

The warning is due to the following .config:
CONFIG_IP_NF_CONNTRACK=m
CONFIG_IP_NF_CONNTRACK_MARK=y
# CONFIG_IP_NF_CONNTRACK_EVENTS is not set
CONFIG_IP_NF_CONNTRACK_NETLINK=m

This change was introduced by:
http://www.kernel.org/git/?p=linux/kernel/git/davem/net-2.6.19.git;a=commit;h=76e4b41009b8a2e9dd246135cf43c7fe39553aa5

Proposed solution (based on the define in
include/net/netfilter/nf_conntrack_compat.h:

Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>

Index: linux/net/netfilter/xt_CONNMARK.c
===================================================================
--- linux.orig/net/netfilter/xt_CONNMARK.c
+++ linux/net/netfilter/xt_CONNMARK.c
@@ -53,7 +53,7 @@ target(struct sk_buff **pskb,
 			newmark = (*ctmark & ~markinfo->mask) | markinfo->mark;
 			if (newmark != *ctmark) {
 				*ctmark = newmark;
-#ifdef CONFIG_IP_NF_CONNTRACK_EVENTS
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
 				ip_conntrack_event_cache(IPCT_MARK, *pskb);
 #else
 				nf_conntrack_event_cache(IPCT_MARK, *pskb);
@@ -65,7 +65,7 @@ target(struct sk_buff **pskb,
 				  ((*pskb)->nfmark & markinfo->mask);
 			if (*ctmark != newmark) {
 				*ctmark = newmark;
-#ifdef CONFIG_IP_NF_CONNTRACK_EVENTS
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
 				ip_conntrack_event_cache(IPCT_MARK, *pskb);
 #else
 				nf_conntrack_event_cache(IPCT_MARK, *pskb);

Re: 2.6.18-rc4-mm3

[Pablo Neira Ayuso]

Benoit Boissinot wrote:
> On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
> 
>>
>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/ 
>>
>>
>> Changes since 2.6.18-rc4-mm2:
>>
>>  git-net.patch
> 
> 
> It introduces a new warning for me:
> net/netfilter/xt_CONNMARK.c: In function 'target':
> net/netfilter/xt_CONNMARK.c:59: warning: implicit declaration of
> function 'nf_conntrack_event_cache'
> 
> The warning is due to the following .config:
> CONFIG_IP_NF_CONNTRACK=m
> CONFIG_IP_NF_CONNTRACK_MARK=y
> # CONFIG_IP_NF_CONNTRACK_EVENTS is not set
> CONFIG_IP_NF_CONNTRACK_NETLINK=m
> 
> This change was introduced by:
> http://www.kernel.org/git/?p=linux/kernel/git/davem/net-2.6.19.git;a=commit;h=76e4b41009b8a2e9dd246135cf43c7fe39553aa5 
> 
> Proposed solution (based on the define in
> include/net/netfilter/nf_conntrack_compat.h:

That is my fault, thanks for catching up this Benoit.

Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>

-- 
The dawn of the fourth age of Linux firewalling is coming; a time of 
great struggle and heroic deeds -- J.Kadlecsik got inspired by J.Morris

Re: 2.6.18-rc4-mm3

[Benoit Boissinot]

On 8/27/06, Andrew Morton <akpm@osdl.org> wrote:
>
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
>
>  git-acpi.patch

commit f62d31ee2f2f453b07107465fea54540cab418eb broke my laptop
(pentium M, dell D600).
I can reliably get a hard lockup (no sysrq) when modprobing ehci_hcd
and uhci_hci. It works when reverting the changeset.

I can provide cpuinfo or dmesg if necessary.

regards,

Benoit

Re: 2.6.18-rc4-mm3

[Mel Gorman]

On (26/08/06 16:09), Andrew Morton didst pronounce:
> 
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
> 

This failed to build on two x86_64 machines I have access to with (one
on test.kernel.org);

  OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
  BFD: Warning: Writing section `.data.percpu' to huge (ie negative)
  file offset 0x80471000.
  /usr/local/autobench/sources/x86_64-cross/gcc-3.4.0-glibc-2.3.2/bin/x86_64-unknown-linux-gnu-objcopy:
  arch/x86_64/boot/compressed/vmlinux.bin: File truncated
  make[2]: *** [arch/x86_64/boot/compressed/vmlinux.bin] Error 1
  make[1]: *** [arch/x86_64/boot/compressed/vmlinux] Error 2
  make: *** [bzImage] Error 2
  08/26/06-17:16:14 Build the kernel. Failed rc = 2
  08/26/06-17:16:14 build: kernel build Failed rc = 1
  08/26/06-17:16:14 command complete: (2) rc=126
  Failed and terminated the run
   Fatal error, aborting autorun

CONFIG_NR_CPUS was 8. The build log can be seen at
http://test.kernel.org/abat/45342/debug/test.log.0 and the .config is at
http://test.kernel.org/abat/45342/build/dotconfig . I haven't done any
further investigation in case this is a known problem. If it's new, I'll
start digging.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

Re: 2.6.18-rc4-mm3

[Andrew Morton]

On Mon, 28 Aug 2006 10:07:54 +0100
mel@skynet.ie (Mel Gorman) wrote:

> On (26/08/06 16:09), Andrew Morton didst pronounce:
> > 
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
> > 
> 
> This failed to build on two x86_64 machines I have access to with (one
> on test.kernel.org);
> 
>   OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
>   BFD: Warning: Writing section `.data.percpu' to huge (ie negative)
>   file offset 0x80471000.
>   /usr/local/autobench/sources/x86_64-cross/gcc-3.4.0-glibc-2.3.2/bin/x86_64-unknown-linux-gnu-objcopy:
>   arch/x86_64/boot/compressed/vmlinux.bin: File truncated
>   make[2]: *** [arch/x86_64/boot/compressed/vmlinux.bin] Error 1
>   make[1]: *** [arch/x86_64/boot/compressed/vmlinux] Error 2
>   make: *** [bzImage] Error 2
>   08/26/06-17:16:14 Build the kernel. Failed rc = 2
>   08/26/06-17:16:14 build: kernel build Failed rc = 1
>   08/26/06-17:16:14 command complete: (2) rc=126
>   Failed and terminated the run
>    Fatal error, aborting autorun
> 
> CONFIG_NR_CPUS was 8. The build log can be seen at
> http://test.kernel.org/abat/45342/debug/test.log.0 and the .config is at
> http://test.kernel.org/abat/45342/build/dotconfig . I haven't done any
> further investigation in case this is a known problem. If it's new, I'll
> start digging.
> 

hm.  It works for me.  

BINUTILS_DIR=binutils-2.16.1
GCC_DIR=gcc-4.0.2
GLIBC_DIR=glibc-2.3.6

I guess one could poke around in vmlinux, find out what's happened to the
.data.percpu section.  `readelf --sections vmlinux', etc?

Re: 2.6.18-rc4-mm3

[Mel Gorman]

On Mon, 28 Aug 2006, Andrew Morton wrote:

> On Mon, 28 Aug 2006 10:07:54 +0100
> mel@skynet.ie (Mel Gorman) wrote:
>
>> On (26/08/06 16:09), Andrew Morton didst pronounce:
>>>
>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
>>>
>>
>> This failed to build on two x86_64 machines I have access to with (one
>> on test.kernel.org);
>>
>>   OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
>>   BFD: Warning: Writing section `.data.percpu' to huge (ie negative)
>>   file offset 0x80471000.
>>   /usr/local/autobench/sources/x86_64-cross/gcc-3.4.0-glibc-2.3.2/bin/x86_64-unknown-linux-gnu-objcopy:
>>   arch/x86_64/boot/compressed/vmlinux.bin: File truncated
>>   make[2]: *** [arch/x86_64/boot/compressed/vmlinux.bin] Error 1
>>   make[1]: *** [arch/x86_64/boot/compressed/vmlinux] Error 2
>>   make: *** [bzImage] Error 2
>>   08/26/06-17:16:14 Build the kernel. Failed rc = 2
>>   08/26/06-17:16:14 build: kernel build Failed rc = 1
>>   08/26/06-17:16:14 command complete: (2) rc=126
>>   Failed and terminated the run
>>    Fatal error, aborting autorun
>>
>> CONFIG_NR_CPUS was 8. The build log can be seen at
>> http://test.kernel.org/abat/45342/debug/test.log.0 and the .config is at
>> http://test.kernel.org/abat/45342/build/dotconfig . I haven't done any
>> further investigation in case this is a known problem. If it's new, I'll
>> start digging.
>>
>
> hm.  It works for me.
>
> BINUTILS_DIR=binutils-2.16.1
> GCC_DIR=gcc-4.0.2
> GLIBC_DIR=glibc-2.3.6
>
> I guess one could poke around in vmlinux, find out what's happened to the
> .data.percpu section.  `readelf --sections vmlinux', etc?


There didn't seem to be anything unusual about the .data.percpu section It 
turned out to be a binutils version problem. On the two test machines, the 
cross-compiler from 
http://developer.osdl.org/dev/plm/cross_compile/x86_64-unknown-linux-gnu.tar.bz2 
was being used. When later versions were used, the problem disappeared.

Thanks

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

Re: 2.6.18-rc4-mm3

[Rafael J. Wysocki]

On Sunday 27 August 2006 01:09, Andrew Morton wrote:
> 
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/

I get things like the appended one on a regular basis at the system startup.

IIRC it has been reported for one of the previous -mm kernels, but it's still
there.


Adding 2104504k swap on /dev/hdc3.  Priority:-1 extents:1 across:2104504k
skge eth0: enabling interface
BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.

Call Trace:
 [<ffffffff8020b119>] dump_trace+0xb9/0x3d0
 [<ffffffff8020b473>] show_trace+0x43/0x60
 [<ffffffff8020b785>] dump_stack+0x15/0x20
 [<ffffffff802489a6>] save_trace+0xd6/0xf0
 [<ffffffff80248ad1>] add_lock_to_list+0x91/0xc0
 [<ffffffff8024ad31>] __lock_acquire+0xb01/0xd30
 [<ffffffff8024b2fb>] lock_acquire+0x8b/0xc0
 [<ffffffff80475b05>] _spin_lock_irq+0x35/0x50
 [<ffffffff80472aec>] schedule+0x16c/0x5ef
 [<ffffffff804734b7>] preempt_schedule_irq+0x57/0x90
 [<ffffffff8020a3f6>] retint_kernel+0x26/0x30
 [<ffffffff804740fb>] __mutex_lock_slowpath+0x23b/0x270
 [<ffffffff80474139>] mutex_lock+0x9/0x10
 [<ffffffff8821801a>] :snd_seq_device:snd_seq_device_info+0x1a/0xd0
 [<ffffffff8806be5e>] :snd:snd_info_entry_open+0x27e/0x360
 [<ffffffff8028d19c>] __dentry_open+0x13c/0x290
 [<ffffffff8028d39d>] nameidata_to_filp+0x2d/0x50
 [<ffffffff8028d3fd>] do_filp_open+0x3d/0x50
 [<ffffffff8028d46a>] do_sys_open+0x5a/0xf0
 [<ffffffff8028d52b>] sys_open+0x1b/0x20
 [<ffffffff80209d2e>] system_call+0x7e/0x83
 [<00002ab9c19f1722>]
 [<ffffffff802489a6>] save_trace+0xd6/0xf0
 [<ffffffff80248ad1>] add_lock_to_list+0x91/0xc0
 [<ffffffff8024ad31>] __lock_acquire+0xb01/0xd30
 [<ffffffff80472aec>] schedule+0x16c/0x5ef
 [<ffffffff8024b2fb>] lock_acquire+0x8b/0xc0
 [<ffffffff80472aec>] schedule+0x16c/0x5ef
 [<ffffffff80475b05>] _spin_lock_irq+0x35/0x50
 [<ffffffff80472aec>] schedule+0x16c/0x5ef
 [<ffffffff8024b3a9>] mark_held_locks+0x79/0xa0
 [<ffffffff804734b1>] preempt_schedule_irq+0x51/0x90
 [<ffffffff804734b7>] preempt_schedule_irq+0x57/0x90
 [<ffffffff8020a3f6>] retint_kernel+0x26/0x30
 [<ffffffff804740fb>] __mutex_lock_slowpath+0x23b/0x270
 [<ffffffff8047411d>] __mutex_lock_slowpath+0x25d/0x270
 [<ffffffff80474139>] mutex_lock+0x9/0x10
 [<ffffffff8821801a>] :snd_seq_device:snd_seq_device_info+0x1a/0xd0
 [<ffffffff8806be5e>] :snd:snd_info_entry_open+0x27e/0x360
 [<ffffffff8806bbe0>] :snd:snd_info_entry_open+0x0/0x360
 [<ffffffff8028d19c>] __dentry_open+0x13c/0x290
 [<ffffffff8028d39d>] nameidata_to_filp+0x2d/0x50
 [<ffffffff8028d3fd>] do_filp_open+0x3d/0x50
 [<ffffffff80475960>] _spin_unlock+0x30/0x60
 [<ffffffff8028cb58>] get_unused_fd+0xf8/0x110
 [<ffffffff803581fa>] strncpy_from_user+0x3a/0x50
 [<ffffffff8028d46a>] do_sys_open+0x5a/0xf0
 [<ffffffff8028d52b>] sys_open+0x1b/0x20
 [<ffffffff80209d2e>] system_call+0x7e/0x83

NET: Registered protocol family 17

Re: 2.6.18-rc4-mm3

[Haavard Skinnemoen]

On Sat, 26 Aug 2006 16:09:22 -0700
Andrew Morton <akpm@osdl.org> wrote:

> +namespaces-add-nsproxy-move-init_nsproxy-into-kernel-nsproxyc.patch

This causes a multiple definition of init_nsproxy on AVR32. Reverting
namespaces-add-nsproxy-avr32-fix.patch fixes it.

Haavard

Re: 2.6.18-rc4-mm3

[Cedric Le Goater]

Haavard Skinnemoen wrote:
> On Sat, 26 Aug 2006 16:09:22 -0700
> Andrew Morton <akpm@osdl.org> wrote:
> 
>> +namespaces-add-nsproxy-move-init_nsproxy-into-kernel-nsproxyc.patch
> 
> This causes a multiple definition of init_nsproxy on AVR32. Reverting
> namespaces-add-nsproxy-avr32-fix.patch fixes it.

Could you try this ?

thanks,

C.


Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>

---
 arch/avr32/kernel/init_task.c |    2 --
 1 file changed, 2 deletions(-)

Index: 2.6.18-rc4-mm3/arch/avr32/kernel/init_task.c
===================================================================
--- 2.6.18-rc4-mm3.orig/arch/avr32/kernel/init_task.c
+++ 2.6.18-rc4-mm3/arch/avr32/kernel/init_task.c
@@ -10,7 +10,6 @@
 #include <linux/sched.h>
 #include <linux/init_task.h>
 #include <linux/mqueue.h>
-#include <linux/nsproxy.h>

 #include <asm/pgtable.h>

@@ -19,7 +18,6 @@ static struct files_struct init_files =
 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
 struct mm_struct init_mm = INIT_MM(init_mm);
-struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy);

 EXPORT_SYMBOL(init_mm);

Re: 2.6.18-rc4-mm3

[Haavard Skinnemoen]

On Tue, 29 Aug 2006 17:18:58 +0200
Cedric Le Goater <clg@fr.ibm.com> wrote:

> Haavard Skinnemoen wrote:
> > On Sat, 26 Aug 2006 16:09:22 -0700
> > Andrew Morton <akpm@osdl.org> wrote:
> > 
> >> +namespaces-add-nsproxy-move-init_nsproxy-into-kernel-nsproxyc.patch
> > 
> > This causes a multiple definition of init_nsproxy on AVR32.
> > Reverting namespaces-add-nsproxy-avr32-fix.patch fixes it.
> 
> Could you try this ?

Yes, this works fine. This does in fact revert
namespaces-add-nsproxy-avr32-fix.patch, so it would work equally well
to just drop that patch.

Thanks,

Haavard