From 1bf1eba74ec14bc10966a8ddb23bc8deeb91facd Mon Sep 17 00:00:00 2001
From: Matthew Wilcox <matthew@wil.cx>
Date: Fri, 23 Jun 2006 13:15:55 -0600
Subject: [IA64] Format /proc/pal/*/version_info correctly

/proc/pal/*/version_info is a bit confusing.  HP firmware, at least,
reports 07.31 instead of 0.7.31.  Also, the comment is out of place;
it's an internal detail about the implementation of ia64_pal_version.
Since the 2.2 revision of the SDM still states that PAL_VERSION can
be called in virtual mode, correct the comment to be more accurate.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/palinfo.c | 34 ++++++++++++++--------------------
 1 file changed, 14 insertions(+), 20 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 3f5bac59209a..ce9f199bbf39 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -566,29 +566,23 @@ version_info(char *page)
 	pal_version_u_t min_ver, cur_ver;
 	char *p = page;
 
-	/* The PAL_VERSION call is advertised as being able to support
-	 * both physical and virtual mode calls. This seems to be a documentation
-	 * bug rather than firmware bug. In fact, it does only support physical mode.
-	 * So now the code reflects this fact and the pal_version() has been updated
-	 * accordingly.
-	 */
-	if (ia64_pal_version(&min_ver, &cur_ver) != 0) return 0;
+	if (ia64_pal_version(&min_ver, &cur_ver) != 0)
+		return 0;
 
 	p += sprintf(p,
 		     "PAL_vendor : 0x%02x (min=0x%02x)\n"
-		     "PAL_A      : %x.%x.%x (min=%x.%x.%x)\n"
-		     "PAL_B      : %x.%x.%x (min=%x.%x.%x)\n",
-		     cur_ver.pal_version_s.pv_pal_vendor, min_ver.pal_version_s.pv_pal_vendor,
-
-		     cur_ver.pal_version_s.pv_pal_a_model>>4,
-		     cur_ver.pal_version_s.pv_pal_a_model&0xf, cur_ver.pal_version_s.pv_pal_a_rev,
-		     min_ver.pal_version_s.pv_pal_a_model>>4,
-		     min_ver.pal_version_s.pv_pal_a_model&0xf, min_ver.pal_version_s.pv_pal_a_rev,
-
-		     cur_ver.pal_version_s.pv_pal_b_model>>4,
-		     cur_ver.pal_version_s.pv_pal_b_model&0xf, cur_ver.pal_version_s.pv_pal_b_rev,
-		     min_ver.pal_version_s.pv_pal_b_model>>4,
-		     min_ver.pal_version_s.pv_pal_b_model&0xf, min_ver.pal_version_s.pv_pal_b_rev);
+		     "PAL_A      : %02x.%02x (min=%02x.%02x)\n"
+		     "PAL_B      : %02x.%02x (min=%02x.%02x)\n",
+		     cur_ver.pal_version_s.pv_pal_vendor,
+		     min_ver.pal_version_s.pv_pal_vendor,
+		     cur_ver.pal_version_s.pv_pal_a_model,
+		     cur_ver.pal_version_s.pv_pal_a_rev,
+		     min_ver.pal_version_s.pv_pal_a_model,
+		     min_ver.pal_version_s.pv_pal_a_rev,
+		     cur_ver.pal_version_s.pv_pal_b_model,
+		     cur_ver.pal_version_s.pv_pal_b_rev,
+		     min_ver.pal_version_s.pv_pal_b_model,
+		     min_ver.pal_version_s.pv_pal_b_rev);
 	return p - page;
 }
 
-- 
cgit v1.2.3


From 4f2ef124b274baac80f64e290aa44e87a7753933 Mon Sep 17 00:00:00 2001
From: Tony Luck <tony.luck@intel.com>
Date: Fri, 28 Jul 2006 13:20:23 -0700
Subject: [IA64] Fix breakage in simscsi.c

arch/ia64/hp/sim/simscsi.c: In function `simscsi_sg_readwrite':
arch/ia64/hp/sim/simscsi.c:154: error: structure has no member named `buffer'
arch/ia64/hp/sim/simscsi.c: In function `simscsi_fillresult':
arch/ia64/hp/sim/simscsi.c:247: error: structure has no member named `buffer'

hch said:
>Just change it to access the request_buffer member instead.  buffer
>and request_buffer have been synonymous 99% of the time, and a driver
>never even wants to access buffer.

Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/hp/sim/simscsi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
index a3fe97531134..8a4f0d0d17a3 100644
--- a/arch/ia64/hp/sim/simscsi.c
+++ b/arch/ia64/hp/sim/simscsi.c
@@ -151,7 +151,7 @@ static void
 simscsi_sg_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset)
 {
 	int list_len = sc->use_sg;
-	struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+	struct scatterlist *sl = (struct scatterlist *)sc->request_buffer;
 	struct disk_stat stat;
 	struct disk_req req;
 
@@ -244,7 +244,7 @@ static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len)
 
 	if (scatterlen == 0)
 		memcpy(sc->request_buffer, buf, len);
-	else for (slp = (struct scatterlist *)sc->buffer; scatterlen-- > 0 && len > 0; slp++) {
+	else for (slp = (struct scatterlist *)sc->request_buffer; scatterlen-- > 0 && len > 0; slp++) {
 		unsigned thislen = min(len, slp->length);
 
 		memcpy(page_address(slp->page) + slp->offset, buf, thislen);
-- 
cgit v1.2.3


From a9ad965ea9a6d719daf333847a2ceb0e363994bd Mon Sep 17 00:00:00 2001
From: "bibo, mao" <bibo.mao@intel.com>
Date: Sun, 30 Jul 2006 03:03:26 -0700
Subject: [PATCH] IA64: kprobe invalidate icache of jump buffer

Kprobe inserts breakpoint instruction in probepoint and then jumps to
instruction slot when breakpoint is hit, the instruction slot icache must
be consistent with dcache.  Here is the patch which invalidates instruction
slot icache area.

Without this patch, in some machines there will be fault when executing
instruction slot where icache content is inconsistent with dcache.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/ia64/kernel/kprobes.c    | 9 +++++++++
 include/asm-i386/kprobes.h    | 1 +
 include/asm-ia64/kprobes.h    | 1 +
 include/asm-powerpc/kprobes.h | 1 +
 include/asm-sparc64/kprobes.h | 1 +
 include/asm-x86_64/kprobes.h  | 1 +
 kernel/kprobes.c              | 1 +
 7 files changed, 15 insertions(+)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 00d9c83b8020..781960f80b6f 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -448,11 +448,20 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
 	return 0;
 }
 
+void __kprobes flush_insn_slot(struct kprobe *p)
+{
+	unsigned long arm_addr;
+
+	arm_addr = ((unsigned long)&p->opcode.bundle) & ~0xFULL;
+	flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
+}
+
 void __kprobes arch_arm_kprobe(struct kprobe *p)
 {
 	unsigned long addr = (unsigned long)p->addr;
 	unsigned long arm_addr = addr & ~0xFULL;
 
+	flush_insn_slot(p);
 	memcpy((char *)arm_addr, &p->ainsn.insn.bundle, sizeof(bundle_t));
 	flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
 }
diff --git a/include/asm-i386/kprobes.h b/include/asm-i386/kprobes.h
index 0730a20f6db8..8774d06689da 100644
--- a/include/asm-i386/kprobes.h
+++ b/include/asm-i386/kprobes.h
@@ -45,6 +45,7 @@ typedef u8 kprobe_opcode_t;
 #define JPROBE_ENTRY(pentry)	(kprobe_opcode_t *)pentry
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 0
+#define flush_insn_slot(p)	do { } while (0)
 
 void arch_remove_kprobe(struct kprobe *p);
 void kretprobe_trampoline(void);
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 2418a787c405..938904910115 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -125,5 +125,6 @@ static inline void jprobe_return(void)
 }
 extern void invalidate_stacked_regs(void);
 extern void flush_register_stack(void);
+extern void flush_insn_slot(struct kprobe *p);
 
 #endif				/* _ASM_KPROBES_H */
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 2d0af52c823d..34e1f89a5fa0 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -51,6 +51,7 @@ typedef unsigned int kprobe_opcode_t;
 
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 1
+#define flush_insn_slot(p)	do { } while (0)
 
 void kretprobe_trampoline(void);
 extern void arch_remove_kprobe(struct kprobe *p);
diff --git a/include/asm-sparc64/kprobes.h b/include/asm-sparc64/kprobes.h
index 15065af566c2..c9f5c34d318c 100644
--- a/include/asm-sparc64/kprobes.h
+++ b/include/asm-sparc64/kprobes.h
@@ -13,6 +13,7 @@ typedef u32 kprobe_opcode_t;
 #define JPROBE_ENTRY(pentry)	(kprobe_opcode_t *)pentry
 #define arch_remove_kprobe(p)	do {} while (0)
 #define  ARCH_INACTIVE_KPROBE_COUNT 0
+#define flush_insn_slot(p)	do { } while (0)
 
 /* Architecture specific copy of original instruction*/
 struct arch_specific_insn {
diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h
index d36febd9bb18..cf5317898fb0 100644
--- a/include/asm-x86_64/kprobes.h
+++ b/include/asm-x86_64/kprobes.h
@@ -47,6 +47,7 @@ typedef u8 kprobe_opcode_t;
 
 void kretprobe_trampoline(void);
 extern void arch_remove_kprobe(struct kprobe *p);
+#define flush_insn_slot(p)	do { } while (0)
 
 /* Architecture specific copy of original instruction*/
 struct arch_specific_insn {
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 64aab081153b..3f57dfdc8f92 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -393,6 +393,7 @@ static int __kprobes add_new_kprobe(struct kprobe *old_p, struct kprobe *p)
 static inline void add_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
 {
 	copy_kprobe(p, ap);
+	flush_insn_slot(ap);
 	ap->addr = p->addr;
 	ap->pre_handler = aggr_pre_handler;
 	ap->fault_handler = aggr_fault_handler;
-- 
cgit v1.2.3


From cea6a4ba8acfba6f59cc9ed71e0d05cb770b9d9c Mon Sep 17 00:00:00 2001
From: Horms <horms@verge.net.au>
Date: Sun, 30 Jul 2006 03:03:34 -0700
Subject: [PATCH] panic_on_oops: remove ssleep()

This patch is part of an effort to unify the panic_on_oops behaviour across
all architectures that implement it.

It was pointed out to me by Andi Kleen that if an oops has occured in
interrupt context, then calling sleep() in the oops path will only cause a
panic, and that it would be really better for it not to be in the path at
all.

This patch removes the ssleep() call and reworks the console message
accordinly.  I have a slght concern that the resulting console message is
too long, feedback welcome.

For powerpc it also unifies the 32bit and 64bit behaviour.

Fror x86_64, this patch only updates the console message, as ssleep() is
already not present.

Signed-off-by: Horms <horms@verge.net.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/arm/kernel/traps.c     |  7 ++-----
 arch/i386/kernel/traps.c    |  8 +++-----
 arch/ia64/kernel/traps.c    |  7 ++-----
 arch/powerpc/kernel/traps.c | 10 +++-------
 arch/x86_64/kernel/traps.c  |  2 +-
 arch/xtensa/kernel/traps.c  |  8 +++-----
 6 files changed, 14 insertions(+), 28 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 35a052fc177a..4e29dd03e582 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -232,11 +232,8 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
 	bust_spinlocks(0);
 	spin_unlock_irq(&die_lock);
 
-	if (panic_on_oops) {
-		printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
-		ssleep(5);
-		panic("Fatal exception");
-	}
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
 
 	do_exit(SIGSEGV);
 }
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 021f8fdc7512..0d4005dc06c5 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -453,11 +453,9 @@ void die(const char * str, struct pt_regs * regs, long err)
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
 
-	if (panic_on_oops) {
-		printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
-		ssleep(5);
-		panic("Fatal exception");
-	}
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
+
 	oops_exit();
 	do_exit(SIGSEGV);
 }
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index e7bbb0f40aa2..5a0420464c6c 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -117,11 +117,8 @@ die (const char *str, struct pt_regs *regs, long err)
 	die.lock_owner = -1;
 	spin_unlock_irq(&die.lock);
 
-	if (panic_on_oops) {
-		printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
-		ssleep(5);
-		panic("Fatal exception");
-	}
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
 
   	do_exit(SIGSEGV);
 }
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 3c668078e524..2105767fcc57 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -150,13 +150,9 @@ int die(const char *str, struct pt_regs *regs, long err)
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
 
-	if (panic_on_oops) {
-#ifdef CONFIG_PPC64
-		printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
-		ssleep(5);
-#endif
-		panic("Fatal exception");
-	}
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
+
 	do_exit(err);
 
 	return 0;
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index f7a9d1421078..4e9938dee060 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -529,7 +529,7 @@ void __kprobes oops_end(unsigned long flags)
 		/* Nest count reaches zero, release the lock. */
 		spin_unlock_irqrestore(&die_lock, flags);
 	if (panic_on_oops)
-		panic("Oops");
+		panic("Fatal exception: panic_on_oops");
 }
 
 void __kprobes __die(const char * str, struct pt_regs * regs, long err)
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index 27e409089a7b..9734960a2451 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -487,11 +487,9 @@ void die(const char * str, struct pt_regs * regs, long err)
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
 
-	if (panic_on_oops) {
-		printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
-		ssleep(5);
-		panic("Fatal exception");
-	}
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
+
 	do_exit(err);
 }
 
-- 
cgit v1.2.3


From be6b5a3505fa0cd54c3b5959a39293f47c648980 Mon Sep 17 00:00:00 2001
From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Sun, 30 Jul 2006 03:03:37 -0700
Subject: [PATCH] cpu hotplug: use hotplug version of registration in late
 inits

Use hotplug version of register_cpu_notifier in late init functions.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/intel_cacheinfo.c |  2 +-
 arch/ia64/kernel/palinfo.c             | 13 ++++++-------
 arch/ia64/kernel/topology.c            |  2 +-
 arch/s390/appldata/appldata_base.c     | 10 +++++-----
 arch/x86_64/kernel/mce.c               | 12 +++++-------
 arch/x86_64/kernel/mce_amd.c           | 19 +++++++------------
 drivers/base/topology.c                |  2 +-
 7 files changed, 26 insertions(+), 34 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index e9f0b928b0a9..5c43be47587f 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -759,7 +759,7 @@ static int __cpuinit cache_sysfs_init(void)
 	if (num_cache_leaves == 0)
 		return 0;
 
-	register_cpu_notifier(&cacheinfo_cpu_notifier);
+	register_hotcpu_notifier(&cacheinfo_cpu_notifier);
 
 	for_each_online_cpu(i) {
 		cacheinfo_cpu_callback(&cacheinfo_cpu_notifier, CPU_ONLINE,
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 3f5bac59209a..ab5b52413e91 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -958,9 +958,9 @@ remove_palinfo_proc_entries(unsigned int hcpu)
 	}
 }
 
-static int __cpuinit palinfo_cpu_callback(struct notifier_block *nfb,
-								unsigned long action,
-								void *hcpu)
+#ifdef CONFIG_HOTPLUG_CPU
+static int palinfo_cpu_callback(struct notifier_block *nfb,
+					unsigned long action, void *hcpu)
 {
 	unsigned int hotcpu = (unsigned long)hcpu;
 
@@ -968,20 +968,19 @@ static int __cpuinit palinfo_cpu_callback(struct notifier_block *nfb,
 	case CPU_ONLINE:
 		create_palinfo_proc_entries(hotcpu);
 		break;
-#ifdef CONFIG_HOTPLUG_CPU
 	case CPU_DEAD:
 		remove_palinfo_proc_entries(hotcpu);
 		break;
-#endif
 	}
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata palinfo_cpu_notifier =
+static struct notifier_block palinfo_cpu_notifier =
 {
 	.notifier_call = palinfo_cpu_callback,
 	.priority = 0,
 };
+#endif
 
 static int __init
 palinfo_init(void)
@@ -1020,7 +1019,7 @@ palinfo_exit(void)
 	/*
 	 * Unregister from cpu notifier callbacks
 	 */
-	unregister_cpu_notifier(&palinfo_cpu_notifier);
+	unregister_hotcpu_notifier(&palinfo_cpu_notifier);
 }
 
 module_init(palinfo_init);
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index b146f1cfad31..d24fa393b182 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -435,7 +435,7 @@ static int __cpuinit cache_sysfs_init(void)
 				(void *)(long)i);
 	}
 
-	register_cpu_notifier(&cache_cpu_notifier);
+	register_hotcpu_notifier(&cache_cpu_notifier);
 
 	return 0;
 }
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index d0f82c995af6..6a4b5f9715c9 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -617,7 +617,8 @@ appldata_offline_cpu(int cpu)
 	spin_unlock(&appldata_timer_lock);
 }
 
-static int __cpuinit
+#ifdef CONFIG_HOTPLUG_CPU
+static int
 appldata_cpu_notify(struct notifier_block *self,
 		    unsigned long action, void *hcpu)
 {
@@ -625,20 +626,19 @@ appldata_cpu_notify(struct notifier_block *self,
 	case CPU_ONLINE:
 		appldata_online_cpu((long) hcpu);
 		break;
-#ifdef CONFIG_HOTPLUG_CPU
 	case CPU_DEAD:
 		appldata_offline_cpu((long) hcpu);
 		break;
-#endif
 	default:
 		break;
 	}
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __devinitdata appldata_nb = {
+static struct notifier_block appldata_nb = {
 	.notifier_call = appldata_cpu_notify,
 };
+#endif
 
 /*
  * appldata_init()
@@ -662,7 +662,7 @@ static int __init appldata_init(void)
 		appldata_online_cpu(i);
 
 	/* Register cpu hotplug notifier */
-	register_cpu_notifier(&appldata_nb);
+	register_hotcpu_notifier(&appldata_nb);
 
 	appldata_sysctl_header = register_sysctl_table(appldata_dir_table, 1);
 #ifdef MODULE
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index 88845674c661..4e017fb30fb3 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -615,7 +615,7 @@ static __cpuinit int mce_create_device(unsigned int cpu)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static __cpuinit void mce_remove_device(unsigned int cpu)
+static void mce_remove_device(unsigned int cpu)
 {
 	int i;
 
@@ -626,10 +626,9 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
 	sysdev_remove_file(&per_cpu(device_mce,cpu), &attr_check_interval);
 	sysdev_unregister(&per_cpu(device_mce,cpu));
 }
-#endif
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
-static __cpuinit int
+static int
 mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
@@ -638,18 +637,17 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	case CPU_ONLINE:
 		mce_create_device(cpu);
 		break;
-#ifdef CONFIG_HOTPLUG_CPU
 	case CPU_DEAD:
 		mce_remove_device(cpu);
 		break;
-#endif
 	}
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata mce_cpu_notifier = {
+static struct notifier_block mce_cpu_notifier = {
 	.notifier_call = mce_cpu_callback,
 };
+#endif
 
 static __init int mce_init_device(void)
 {
@@ -664,7 +662,7 @@ static __init int mce_init_device(void)
 		mce_create_device(i);
 	}
 
-	register_cpu_notifier(&mce_cpu_notifier);
+	register_hotcpu_notifier(&mce_cpu_notifier);
 	misc_register(&mce_log_device);
 	return err;
 }
diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c
index db2acbf7ad28..883fe747f64c 100644
--- a/arch/x86_64/kernel/mce_amd.c
+++ b/arch/x86_64/kernel/mce_amd.c
@@ -558,7 +558,7 @@ out:
  *   of shared sysfs dir/files, and rest of the cores will be symlinked to it.
  */
 
-static __cpuinit void deallocate_threshold_block(unsigned int cpu,
+static void deallocate_threshold_block(unsigned int cpu,
 						 unsigned int bank)
 {
 	struct threshold_block *pos = NULL;
@@ -578,7 +578,7 @@ static __cpuinit void deallocate_threshold_block(unsigned int cpu,
 	per_cpu(threshold_banks, cpu)[bank]->blocks = NULL;
 }
 
-static __cpuinit void threshold_remove_bank(unsigned int cpu, int bank)
+static void threshold_remove_bank(unsigned int cpu, int bank)
 {
 	int i = 0;
 	struct threshold_bank *b;
@@ -618,7 +618,7 @@ free_out:
 	per_cpu(threshold_banks, cpu)[bank] = NULL;
 }
 
-static __cpuinit void threshold_remove_device(unsigned int cpu)
+static void threshold_remove_device(unsigned int cpu)
 {
 	unsigned int bank;
 
@@ -629,14 +629,8 @@ static __cpuinit void threshold_remove_device(unsigned int cpu)
 	}
 }
 
-#else /* !CONFIG_HOTPLUG_CPU */
-static void threshold_remove_device(unsigned int cpu)
-{
-}
-#endif
-
 /* get notified when a cpu comes on/off */
-static int __cpuinit threshold_cpu_callback(struct notifier_block *nfb,
+static int threshold_cpu_callback(struct notifier_block *nfb,
 					    unsigned long action, void *hcpu)
 {
 	/* cpu was unsigned int to begin with */
@@ -659,9 +653,10 @@ static int __cpuinit threshold_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block threshold_cpu_notifier __cpuinitdata = {
+static struct notifier_block threshold_cpu_notifier = {
 	.notifier_call = threshold_cpu_callback,
 };
+#endif /* CONFIG_HOTPLUG_CPU */
 
 static __init int threshold_init_device(void)
 {
@@ -673,7 +668,7 @@ static __init int threshold_init_device(void)
 		if (err)
 			return err;
 	}
-	register_cpu_notifier(&threshold_cpu_notifier);
+	register_hotcpu_notifier(&threshold_cpu_notifier);
 	return 0;
 }
 
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index c2d621632383..3ef9d514b916 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -139,7 +139,7 @@ static int __cpuinit topology_sysfs_init(void)
 				(void *)(long)i);
 	}
 
-	register_cpu_notifier(&topology_cpu_notifier);
+	register_hotcpu_notifier(&topology_cpu_notifier);
 
 	return 0;
 }
-- 
cgit v1.2.3


From 9578bcf4ecaf447cb4bb0891309fad73ff5c00e3 Mon Sep 17 00:00:00 2001
From: Brent Casavant <bcasavan@sgi.com>
Date: Sun, 30 Jul 2006 03:03:46 -0700
Subject: [PATCH] sgiioc4: Always share IRQ

The SGI IOC4 IDE device always shares an interrupt with other devices which
are part of IOC4.  As such, IDEPCI_SHARE_IRQ should always be enabled when
BLK_DEV_SGIIOC4 is enabled.

Signed-off-by: Brent Casavant <bcasavan@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/ia64/configs/sn2_defconfig | 2 +-
 arch/ia64/defconfig             | 2 +-
 drivers/ide/Kconfig             | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/configs/sn2_defconfig b/arch/ia64/configs/sn2_defconfig
index 9ea35398e10d..0f14a82b856e 100644
--- a/arch/ia64/configs/sn2_defconfig
+++ b/arch/ia64/configs/sn2_defconfig
@@ -363,7 +363,7 @@ CONFIG_BLK_DEV_IDECD=y
 #
 CONFIG_IDE_GENERIC=y
 CONFIG_BLK_DEV_IDEPCI=y
-# CONFIG_IDEPCI_SHARE_IRQ is not set
+CONFIG_IDEPCI_SHARE_IRQ=y
 # CONFIG_BLK_DEV_OFFBOARD is not set
 # CONFIG_BLK_DEV_GENERIC is not set
 # CONFIG_BLK_DEV_OPTI621 is not set
diff --git a/arch/ia64/defconfig b/arch/ia64/defconfig
index 6cba55da572a..9001b3fbaa32 100644
--- a/arch/ia64/defconfig
+++ b/arch/ia64/defconfig
@@ -366,7 +366,7 @@ CONFIG_BLK_DEV_IDESCSI=m
 # CONFIG_IDE_GENERIC is not set
 # CONFIG_BLK_DEV_IDEPNP is not set
 CONFIG_BLK_DEV_IDEPCI=y
-# CONFIG_IDEPCI_SHARE_IRQ is not set
+CONFIG_IDEPCI_SHARE_IRQ=y
 # CONFIG_BLK_DEV_OFFBOARD is not set
 CONFIG_BLK_DEV_GENERIC=y
 # CONFIG_BLK_DEV_OPTI621 is not set
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index d1266fe2d1ab..556958ebbf03 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -682,6 +682,7 @@ config BLK_DEV_SVWKS
 config BLK_DEV_SGIIOC4
 	tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
 	depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
+	select IDEPCI_SHARE_IRQ
 	help
 	  This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
 	  chipset, which has one channel and can support two devices.
-- 
cgit v1.2.3


From 0b0bf7a3ccb6f0b38ead71980e79f875046047b7 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Sun, 30 Jul 2006 03:04:06 -0700
Subject: [PATCH] vDSO hash-style fix

The latest toolchains can produce a new ELF section in DSOs and
dynamically-linked executables.  The new section ".gnu.hash" replaces
".hash", and allows for more efficient runtime symbol lookups by the
dynamic linker.  The new ld option --hash-style={sysv|gnu|both} controls
whether to produce the old ".hash", the new ".gnu.hash", or both.  In some
new systems such as Fedora Core 6, gcc by default passes --hash-style=gnu
to the linker, so that a standard invocation of "gcc -shared" results in
producing a DSO with only ".gnu.hash".  The new ".gnu.hash" sections need
to be dealt with the same way as ".hash" sections in all respects; only the
dynamic linker cares about their contents.  To work with older dynamic
linkers (i.e.  preexisting releases of glibc), a binary must have the old
".hash" section.  The --hash-style=both option produces binaries that a new
dynamic linker can use more efficiently, but an old dynamic linker can
still handle.

The new section runs afoul of the custom linker scripts used to build vDSO
images for the kernel.  On ia64, the failure mode for this is a boot-time
panic because the vDSO's PT_IA_64_UNWIND segment winds up ill-formed.

This patch addresses the problem in two ways.

First, it mentions ".gnu.hash" in all the linker scripts alongside ".hash".
 This produces correct vDSO images with --hash-style=sysv (or old tools),
with --hash-style=gnu, or with --hash-style=both.

Second, it passes the --hash-style=sysv option when building the vDSO
images, so that ".gnu.hash" is not actually produced.  This is the most
conservative choice for compatibility with any old userland.  There is some
concern that some ancient glibc builds (though not any known old production
system) might choke on --hash-style=both binaries.  The optimizations
provided by the new style of hash section do not really matter for a DSO
with a tiny number of symbols, as the vDSO has.  If someone wants to use
=gnu or =both for their vDSO builds and worry less about that
compatibility, just change the option and the linker script changes will
make any choice work fine.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/kbuild/makefiles.txt      | 14 ++++++++++++++
 arch/i386/kernel/Makefile               |  3 ++-
 arch/i386/kernel/vsyscall.lds.S         |  1 +
 arch/ia64/kernel/Makefile               |  3 ++-
 arch/ia64/kernel/gate.lds.S             |  1 +
 arch/parisc/kernel/vmlinux.lds.S        |  1 +
 arch/powerpc/kernel/vdso32/Makefile     |  3 ++-
 arch/powerpc/kernel/vdso32/vdso32.lds.S |  1 +
 arch/powerpc/kernel/vdso64/Makefile     |  3 ++-
 arch/powerpc/kernel/vdso64/vdso64.lds.S |  1 +
 arch/ppc/kernel/vmlinux.lds.S           |  1 +
 arch/um/kernel/dyn.lds.S                |  1 +
 arch/x86_64/ia32/Makefile               |  1 +
 arch/x86_64/ia32/vsyscall.lds           |  1 +
 scripts/Kbuild.include                  |  7 +++++++
 15 files changed, 38 insertions(+), 4 deletions(-)

(limited to 'arch/ia64')

diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index 14ef3868a328..0706699c9da9 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -407,6 +407,20 @@ more details, with real examples.
 	The second argument is optional, and if supplied will be used
 	if first argument is not supported.
 
+    ld-option
+    	ld-option is used to check if $(CC) when used to link object files
+	supports the given option.  An optional second option may be
+	specified if first option are not supported.
+
+	Example:
+		#arch/i386/kernel/Makefile
+		vsyscall-flags += $(call ld-option, -Wl$(comma)--hash-style=sysv)
+
+	In the above example vsyscall-flags will be assigned the option
+	-Wl$(comma)--hash-style=sysv if it is supported by $(CC).
+	The second argument is optional, and if supplied will be used
+	if first argument is not supported.
+
     cc-option
 	cc-option is used to check if $(CC) support a given option, and not
 	supported to use an optional second option.
diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 1b452a1665c4..ab98fc21a541 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -59,7 +59,8 @@ quiet_cmd_syscall = SYSCALL $@
 
 export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH)
 
-vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1
+vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \
+		 $(call ld-option, -Wl$(comma)--hash-style=sysv)
 SYSCFLAGS_vsyscall-sysenter.so	= $(vsyscall-flags)
 SYSCFLAGS_vsyscall-int80.so	= $(vsyscall-flags)
 
diff --git a/arch/i386/kernel/vsyscall.lds.S b/arch/i386/kernel/vsyscall.lds.S
index e26975fc68b6..f66cd11adb72 100644
--- a/arch/i386/kernel/vsyscall.lds.S
+++ b/arch/i386/kernel/vsyscall.lds.S
@@ -10,6 +10,7 @@ SECTIONS
   . = VDSO_PRELINK + SIZEOF_HEADERS;
 
   .hash           : { *(.hash) }		:text
+  .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }
   .dynstr         : { *(.dynstr) }
   .gnu.version    : { *(.gnu.version) }
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 0e4553f320bf..ad8215a3c586 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -45,7 +45,8 @@ CPPFLAGS_gate.lds := -P -C -U$(ARCH)
 quiet_cmd_gate = GATE $@
       cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
 
-GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1
+GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
+		     $(call ld-option, -Wl$(comma)--hash-style=sysv)
 $(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
 	$(call if_changed,gate)
 
diff --git a/arch/ia64/kernel/gate.lds.S b/arch/ia64/kernel/gate.lds.S
index cc35cddfd4cf..6d198339bf85 100644
--- a/arch/ia64/kernel/gate.lds.S
+++ b/arch/ia64/kernel/gate.lds.S
@@ -12,6 +12,7 @@ SECTIONS
   . = GATE_ADDR + SIZEOF_HEADERS;
 
   .hash				: { *(.hash) }				:readable
+  .gnu.hash			: { *(.gnu.hash) }
   .dynsym			: { *(.dynsym) }
   .dynstr			: { *(.dynstr) }
   .gnu.version			: { *(.gnu.version) }
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index 9989495a51dd..b3677fc8eef5 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -204,6 +204,7 @@ SECTIONS
 	*(.dynstr)
 	*(.dynamic)
 	*(.hash)
+	*(.gnu.hash)
 #endif
 	}
 
diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile
index 8a3bed5f143a..3726358faae8 100644
--- a/arch/powerpc/kernel/vdso32/Makefile
+++ b/arch/powerpc/kernel/vdso32/Makefile
@@ -14,7 +14,8 @@ obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
 
 
 EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
-EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1
+EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
+		$(call ld-option, -Wl$(comma)--hash-style=sysv)
 EXTRA_AFLAGS := -D__VDSO32__ -s
 
 obj-y += vdso32_wrapper.o
diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S
index f4bad720cb0a..6187af2d54c3 100644
--- a/arch/powerpc/kernel/vdso32/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S
@@ -14,6 +14,7 @@ SECTIONS
 {
   . = VDSO32_LBASE + SIZEOF_HEADERS;
   .hash           : { *(.hash) }			:text
+  .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }
   .dynstr         : { *(.dynstr) }
   .gnu.version    : { *(.gnu.version) }
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile
index ab39988452cc..43af9b2a6f3b 100644
--- a/arch/powerpc/kernel/vdso64/Makefile
+++ b/arch/powerpc/kernel/vdso64/Makefile
@@ -8,7 +8,8 @@ targets := $(obj-vdso64) vdso64.so
 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
 
 EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
-EXTRA_CFLAGS +=  -nostdlib -Wl,-soname=linux-vdso64.so.1
+EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
+		$(call ld-option, -Wl$(comma)--hash-style=sysv)
 EXTRA_AFLAGS := -D__VDSO64__ -s
 
 obj-y += vdso64_wrapper.o
diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S
index 4bdf224464ab..4a2b6dc0960c 100644
--- a/arch/powerpc/kernel/vdso64/vdso64.lds.S
+++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S
@@ -12,6 +12,7 @@ SECTIONS
 {
   . = VDSO64_LBASE + SIZEOF_HEADERS;
   .hash           : { *(.hash) }		:text
+  .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }
   .dynstr         : { *(.dynstr) }
   .gnu.version    : { *(.gnu.version) }
diff --git a/arch/ppc/kernel/vmlinux.lds.S b/arch/ppc/kernel/vmlinux.lds.S
index 09c6525cfa61..095fd3323323 100644
--- a/arch/ppc/kernel/vmlinux.lds.S
+++ b/arch/ppc/kernel/vmlinux.lds.S
@@ -8,6 +8,7 @@ SECTIONS
   . = + SIZEOF_HEADERS;
   .interp : { *(.interp) }
   .hash          : { *(.hash)		}
+  .gnu.hash      : { *(.gnu.hash)	}
   .dynsym        : { *(.dynsym)		}
   .dynstr        : { *(.dynstr)		}
   .rel.text      : { *(.rel.text)		}
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 2517ecb8bf27..68ed24df5c8f 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -26,6 +26,7 @@ SECTIONS
 
   /* Read-only sections, merged into text segment: */
   .hash           : { *(.hash) }
+  .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }
   .dynstr         : { *(.dynstr) }
   .gnu.version    : { *(.gnu.version) }
diff --git a/arch/x86_64/ia32/Makefile b/arch/x86_64/ia32/Makefile
index 62bc5f56da9e..cdae36435e21 100644
--- a/arch/x86_64/ia32/Makefile
+++ b/arch/x86_64/ia32/Makefile
@@ -23,6 +23,7 @@ targets := $(foreach F,sysenter syscall,vsyscall-$F.o vsyscall-$F.so)
 # The DSO images are built using a special linker script
 quiet_cmd_syscall = SYSCALL $@
       cmd_syscall = $(CC) -m32 -nostdlib -shared -s \
+			  $(call ld-option, -Wl$(comma)--hash-style=sysv) \
 			   -Wl,-soname=linux-gate.so.1 -o $@ \
 			   -Wl,-T,$(filter-out FORCE,$^)
 
diff --git a/arch/x86_64/ia32/vsyscall.lds b/arch/x86_64/ia32/vsyscall.lds
index f2e75ed4c6c7..1dc86ff5bcb9 100644
--- a/arch/x86_64/ia32/vsyscall.lds
+++ b/arch/x86_64/ia32/vsyscall.lds
@@ -11,6 +11,7 @@ SECTIONS
   . = VSYSCALL_BASE + SIZEOF_HEADERS;
 
   .hash           : { *(.hash) }		:text
+  .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }
   .dynstr         : { *(.dynstr) }
   .gnu.version    : { *(.gnu.version) }
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 2180c88cfe89..f01132263535 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -85,6 +85,13 @@ cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
 cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \
                        echo $(3); fi;)
 
+# ld-option
+# Usage: ldflags += $(call ld-option, -Wl$(comma)--hash-style=both)
+ld-option = $(shell if $(CC) $(1) \
+			     -nostdlib -o ldtest$$$$.out -xc /dev/null \
+             > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi; \
+	     rm -f ldtest$$$$.out)
+
 ###
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
 # Usage:
-- 
cgit v1.2.3


From e037cda559547e6353c5a792802963572d0b750e Mon Sep 17 00:00:00 2001
From: Keith Owens <kaos@sgi.com>
Date: Mon, 17 Jul 2006 15:41:59 +1000
Subject: [IA64] sparse cleanups

Fix some sparse warnings on ia64.  Large constants that should be long
instead of int.  Use NULL instead of 0.  Add some missing __iomem
casts.  Replace a non-C99 structure assignment.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/efi.c            | 6 +++---
 arch/ia64/mm/ioremap.c            | 6 +++---
 arch/ia64/sn/kernel/xpc_main.c    | 2 +-
 arch/ia64/sn/pci/tioce_provider.c | 6 +++---
 include/asm-ia64/sn/xpc.h         | 4 ++--
 include/asm-ia64/system.h         | 2 +-
 6 files changed, 13 insertions(+), 13 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index e4bfa9dafbce..bb8770a177b5 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -632,7 +632,7 @@ kern_memory_descriptor (unsigned long phys_addr)
 		if (phys_addr - md->start < (md->num_pages << EFI_PAGE_SHIFT))
 			 return md;
 	}
-	return 0;
+	return NULL;
 }
 
 static efi_memory_desc_t *
@@ -652,7 +652,7 @@ efi_memory_descriptor (unsigned long phys_addr)
 		if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
 			 return md;
 	}
-	return 0;
+	return NULL;
 }
 
 u32
@@ -923,7 +923,7 @@ find_memmap_space (void)
 void
 efi_memmap_init(unsigned long *s, unsigned long *e)
 {
-	struct kern_memdesc *k, *prev = 0;
+	struct kern_memdesc *k, *prev = NULL;
 	u64	contig_low=0, contig_high=0;
 	u64	as, ae, lim;
 	void *efi_map_start, *efi_map_end, *p, *q;
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 07bd02b6c372..4280c074d64e 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -32,7 +32,7 @@ ioremap (unsigned long offset, unsigned long size)
 	 */
 	attr = kern_mem_attribute(offset, size);
 	if (attr & EFI_MEMORY_WB)
-		return phys_to_virt(offset);
+		return (void __iomem *) phys_to_virt(offset);
 	else if (attr & EFI_MEMORY_UC)
 		return __ioremap(offset, size);
 
@@ -43,7 +43,7 @@ ioremap (unsigned long offset, unsigned long size)
 	gran_base = GRANULEROUNDDOWN(offset);
 	gran_size = GRANULEROUNDUP(offset + size) - gran_base;
 	if (efi_mem_attribute(gran_base, gran_size) & EFI_MEMORY_WB)
-		return phys_to_virt(offset);
+		return (void __iomem *) phys_to_virt(offset);
 
 	return __ioremap(offset, size);
 }
@@ -53,7 +53,7 @@ void __iomem *
 ioremap_nocache (unsigned long offset, unsigned long size)
 {
 	if (kern_mem_attribute(offset, size) & EFI_MEMORY_WB)
-		return 0;
+		return NULL;
 
 	return __ioremap(offset, size);
 }
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index 99b123a6421a..5e8e59efb347 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -480,7 +480,7 @@ xpc_activating(void *__partid)
 	partid_t partid = (u64) __partid;
 	struct xpc_partition *part = &xpc_partitions[partid];
 	unsigned long irq_flags;
-	struct sched_param param = { sched_priority: MAX_RT_PRIO - 1 };
+	struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
 	int ret;
 
 
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index 17cd34284886..af7171adcd2c 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -74,7 +74,7 @@ tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
 		else
 			mmr_war_offset = 0x158;
 
-		readq_relaxed((void *)(mmr_base + mmr_war_offset));
+		readq_relaxed((void __iomem *)(mmr_base + mmr_war_offset));
 	}
 }
 
@@ -92,8 +92,8 @@ tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
 
 	if (mmr_offset < 0x45000) {
 		if (mmr_offset == 0x100)
-			readq_relaxed((void *)(mmr_base + 0x38));
-		readq_relaxed((void *)(mmr_base + 0xb050));
+			readq_relaxed((void __iomem *)(mmr_base + 0x38));
+		readq_relaxed((void __iomem *)(mmr_base + 0xb050));
 	}
 }
 
diff --git a/include/asm-ia64/sn/xpc.h b/include/asm-ia64/sn/xpc.h
index 8406f1ef4caf..b72af597878d 100644
--- a/include/asm-ia64/sn/xpc.h
+++ b/include/asm-ia64/sn/xpc.h
@@ -1124,8 +1124,8 @@ xpc_notify_IRQ_send_local(struct xpc_channel *ch, u8 ipi_flag,
 #define XPC_GET_IPI_FLAGS(_amo, _c)	((u8) (((_amo) >> ((_c) * 8)) & 0xff))
 #define XPC_SET_IPI_FLAGS(_amo, _c, _f)	(_amo) |= ((u64) (_f) << ((_c) * 8))
 
-#define	XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & 0x0f0f0f0f0f0f0f0f)
-#define XPC_ANY_MSG_IPI_FLAGS_SET(_amo)       ((_amo) & 0x1010101010101010)
+#define	XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & __IA64_UL_CONST(0x0f0f0f0f0f0f0f0f))
+#define XPC_ANY_MSG_IPI_FLAGS_SET(_amo)       ((_amo) & __IA64_UL_CONST(0x1010101010101010))
 
 
 static inline void
diff --git a/include/asm-ia64/system.h b/include/asm-ia64/system.h
index fc9677bc87ee..384fbf7f2a0f 100644
--- a/include/asm-ia64/system.h
+++ b/include/asm-ia64/system.h
@@ -24,7 +24,7 @@
  * 0xa000000000000000+2*PERCPU_PAGE_SIZE
  * - 0xa000000000000000+3*PERCPU_PAGE_SIZE remain unmapped (guard page)
  */
-#define KERNEL_START		 (GATE_ADDR+0x100000000)
+#define KERNEL_START		 (GATE_ADDR+__IA64_UL_CONST(0x100000000))
 #define PERCPU_ADDR		(-PERCPU_PAGE_SIZE)
 
 #ifndef __ASSEMBLY__
-- 
cgit v1.2.3


From acb15c85de57d81d773b6e4184b7cb143ce83eba Mon Sep 17 00:00:00 2001
From: Zou Nan hai <nanhai.zou@intel.com>
Date: Wed, 26 Jul 2006 07:26:51 +0800
Subject: [IA64] Do not assume output registers be reservered.

We found an issue in pal.S.

According to the software runtime SPEC,
The caller's output registers do not need to be preserved for
caller. The callee may reuse input registers for any other
purpose within the procedure.

in ia64_pal_call_phys_stacked,

input registers are copied to output registers before call
into ia64_switch_mode_phys, then used to call into PAL. This
assumes output registers are preserved in ia64_switch_mode_phys,
which may not be true.

In this particular case, ia64_switch_mode_phys alloc a null frame
, and mask off psr.i.
If an interrupt comes at this small window,
or an MCA comes inside the procedure, output registers
maybe changed,
then the pal call may got some staled input registers.

This patch moves the copies from input to output
after ia64_switch_mode_phys to follow the software
runtime convention.

It  also removed some unused labels in
ia64_pal_call_phys_stacked.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/pal.S | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/pal.S b/arch/ia64/kernel/pal.S
index 5018c7f2e7a8..ebaf1e685f5e 100644
--- a/arch/ia64/kernel/pal.S
+++ b/arch/ia64/kernel/pal.S
@@ -217,12 +217,7 @@ GLOBAL_ENTRY(ia64_pal_call_phys_stacked)
 	.body
 	;;
 	ld8 loc2 = [loc2]		// loc2 <- entry point
-	mov out0 = in0		// first argument
-	mov out1 = in1		// copy arg2
-	mov out2 = in2		// copy arg3
-	mov out3 = in3		// copy arg3
-	;;
-	mov loc3 = psr		// save psr
+	mov loc3 = psr			// save psr
 	;;
 	mov loc4=ar.rsc			// save RSE configuration
 	dep.z loc2=loc2,0,61		// convert pal entry point to physical
@@ -236,18 +231,23 @@ GLOBAL_ENTRY(ia64_pal_call_phys_stacked)
 	;;
 	andcm r16=loc3,r16		// removes bits to clear from psr
 	br.call.sptk.many rp=ia64_switch_mode_phys
-.ret6:
+
+	mov out0 = in0			// first argument
+	mov out1 = in1			// copy arg2
+	mov out2 = in2			// copy arg3
+	mov out3 = in3			// copy arg3
 	mov loc5 = r19
 	mov loc6 = r20
+
 	br.call.sptk.many rp=b7		// now make the call
-.ret7:
+
 	mov ar.rsc=0			// put RSE in enforced lazy, LE mode
 	mov r16=loc3			// r16= original psr
 	mov r19=loc5
 	mov r20=loc6
 	br.call.sptk.many rp=ia64_switch_mode_virt	// return to virtual mode
 
-.ret8:	mov psr.l  = loc3		// restore init PSR
+	mov psr.l  = loc3		// restore init PSR
 	mov ar.pfs = loc1
 	mov rp = loc0
 	;;
-- 
cgit v1.2.3


From e55ce456155813ca34e105d0e05306edad05cf6e Mon Sep 17 00:00:00 2001
From: Zou Nan hai <nanhai.zou@intel.com>
Date: Wed, 26 Jul 2006 07:36:40 +0800
Subject: [IA64] Don't alloc empty frame in ia64_switch_mode_phys

I think ia64_switch_mode_phys and ia64_switch_mode_virt
does not need to alloc an empty frame.
An empty frame is required by loadrs but flushrs
does not need that.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/head.S | 2 --
 1 file changed, 2 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 561b8f1d3bc7..29236f0c62b5 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -853,7 +853,6 @@ END(__ia64_init_fpu)
  */
 GLOBAL_ENTRY(ia64_switch_mode_phys)
  {
-	alloc r2=ar.pfs,0,0,0,0
 	rsm psr.i | psr.ic		// disable interrupts and interrupt collection
 	mov r15=ip
  }
@@ -902,7 +901,6 @@ END(ia64_switch_mode_phys)
  */
 GLOBAL_ENTRY(ia64_switch_mode_virt)
  {
-	alloc r2=ar.pfs,0,0,0,0
 	rsm psr.i | psr.ic		// disable interrupts and interrupt collection
 	mov r15=ip
  }
-- 
cgit v1.2.3


From 0a69ca91be2b36f99a48daacd1f12d9d49ecaf87 Mon Sep 17 00:00:00 2001
From: Prarit Bhargava <prarit@redhat.com>
Date: Mon, 31 Jul 2006 09:12:11 -0400
Subject: [PATCH] Fix RAID5 + IA64 compile

CONFIG_MD_RAID5 became CONFIG_MD_RAID456 in drivers/md/Kconfig.  Make
the same change in arch/ia64

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Aron Griffis <aron@hp.com>
Acked-by: Jes Sorenson <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/ia64_ksyms.c | 2 +-
 arch/ia64/lib/Makefile        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index b7cf651ceb14..3ead20fb6f4b 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -62,7 +62,7 @@ EXPORT_SYMBOL(__udivdi3);
 EXPORT_SYMBOL(__moddi3);
 EXPORT_SYMBOL(__umoddi3);
 
-#if defined(CONFIG_MD_RAID5) || defined(CONFIG_MD_RAID5_MODULE)
+#if defined(CONFIG_MD_RAID456) || defined(CONFIG_MD_RAID456_MODULE)
 extern void xor_ia64_2(void);
 extern void xor_ia64_3(void);
 extern void xor_ia64_4(void);
diff --git a/arch/ia64/lib/Makefile b/arch/ia64/lib/Makefile
index d8536a2c22a9..38fa6e49e791 100644
--- a/arch/ia64/lib/Makefile
+++ b/arch/ia64/lib/Makefile
@@ -14,7 +14,7 @@ lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o			\
 lib-$(CONFIG_ITANIUM)	+= copy_page.o copy_user.o memcpy.o
 lib-$(CONFIG_MCKINLEY)	+= copy_page_mck.o memcpy_mck.o
 lib-$(CONFIG_PERFMON)	+= carta_random.o
-lib-$(CONFIG_MD_RAID5)	+= xor.o
+lib-$(CONFIG_MD_RAID456)	+= xor.o
 
 AFLAGS___divdi3.o	=
 AFLAGS___udivdi3.o	= -DUNSIGNED
-- 
cgit v1.2.3


From 921eea1cdf6ce7f0db88e4579474a04b1fb0fe6d Mon Sep 17 00:00:00 2001
From: Bob Picco <bob.picco@hp.com>
Date: Wed, 28 Jun 2006 12:54:55 -0400
Subject: [IA64] align high endpoint of VIRTUAL_MEM_MAP

Assure that vmem_map's high endpoint is MAX_ORDER aligned. Not doing so violates
the buddy allocator algorithm. Also anyone using mem=XXX on boot line and
not aligned to MAX_ORDER requires this patch in order to satisfy buddy
allocator. vmem_map always starts at pfn 0. The potentially large MAX_ORDER
on ia64 (due to hugetlbfs) requires that the end of vmem_map be aligned
to MAX_ORDER_NR_PAGES.

This was boot tested for: FLATMEM, FLATMEM+VIRTUAL_MEM_MAP,
DISCONTIGMEM+VIRTUAL_MEM_MAP and SPARSEMEM.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/mm/contig.c    | 3 ++-
 arch/ia64/mm/discontig.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index 2a88cdd6d924..8919fed9666a 100644
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -277,7 +277,8 @@ paging_init (void)
 
 		/* allocate virtual_mem_map */
 
-		map_size = PAGE_ALIGN(max_low_pfn * sizeof(struct page));
+		map_size = PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
+			sizeof(struct page));
 		vmalloc_end -= map_size;
 		vmem_map = (struct page *) vmalloc_end;
 		efi_memmap_walk(create_mem_map_page_table, NULL);
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 99bd9e30db96..8eeb669917fa 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -751,7 +751,8 @@ void __init paging_init(void)
 	efi_memmap_walk(filter_rsvd_memory, count_node_pages);
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
-	vmalloc_end -= PAGE_ALIGN(max_low_pfn * sizeof(struct page));
+	vmalloc_end -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
+		sizeof(struct page));
 	vmem_map = (struct page *) vmalloc_end;
 	efi_memmap_walk(create_mem_map_page_table, NULL);
 	printk("Virtual mem_map starts at 0x%p\n", vmem_map);
-- 
cgit v1.2.3


From e44e41d0c832ebbda7311a1fe43584d844026357 Mon Sep 17 00:00:00 2001
From: Bob Picco <bob.picco@hp.com>
Date: Wed, 28 Jun 2006 12:55:43 -0400
Subject: [IA64] fix show_mem for VIRTUAL_MEM_MAP+FLATMEM

contig.c (FLATMEM) requires the same optimization as in discontig.c for show_mem
when VIRTUAL_MEM_MAP is in use. Otherwise FLATMEM has softlockup timeouts.
This was boot tested for memory configuration: SPARSEMEM,
DISCONTIG+VIRTUAL_MEM_MAP, FLATMEM, FLATMEM+VIRTUAL_MEM_MAP and
FLATMEM+VIRTUAL_MEM_MAP with largest memory gap less than LARGE_GAP by
using boot parameter "mem=".

This was boot tested and "echo m >/proc/sysrq-trigger" output evaluated for
: FLATMEM, FLATMEM+VIRTUAL_MEM_MAP, DISCONTIGMEM+VIRTUAL_MEM_MAP and
SPARSEMEM.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/mm/contig.c      | 13 +++++++---
 arch/ia64/mm/discontig.c   | 65 ++--------------------------------------------
 arch/ia64/mm/init.c        | 55 +++++++++++++++++++++++++++++++++++++++
 include/asm-ia64/meminit.h |  7 ++++-
 4 files changed, 72 insertions(+), 68 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index 8919fed9666a..e004143ba86b 100644
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -27,6 +27,7 @@
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 static unsigned long num_dma_physpages;
+static unsigned long max_gap;
 #endif
 
 /**
@@ -45,9 +46,15 @@ show_mem (void)
 
 	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
 	i = max_mapnr;
-	while (i-- > 0) {
-		if (!pfn_valid(i))
+	for (i = 0; i < max_mapnr; i++) {
+		if (!pfn_valid(i)) {
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+			if (max_gap < LARGE_GAP)
+				continue;
+			i = vmemmap_find_next_valid_pfn(0, i) - 1;
+#endif
 			continue;
+		}
 		total++;
 		if (PageReserved(mem_map+i))
 			reserved++;
@@ -234,7 +241,6 @@ paging_init (void)
 	unsigned long zones_size[MAX_NR_ZONES];
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 	unsigned long zholes_size[MAX_NR_ZONES];
-	unsigned long max_gap;
 #endif
 
 	/* initialize mem_map[] */
@@ -266,7 +272,6 @@ paging_init (void)
 		}
 	}
 
-	max_gap = 0;
 	efi_memmap_walk(find_largest_hole, (u64 *)&max_gap);
 	if (max_gap < LARGE_GAP) {
 		vmem_map = (struct page *) 0;
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 8eeb669917fa..d260bffa01ab 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -534,68 +534,6 @@ void __cpuinit *per_cpu_init(void)
 }
 #endif /* CONFIG_SMP */
 
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
-	unsigned long end_address, hole_next_pfn;
-	unsigned long stop_address;
-
-	end_address = (unsigned long) &vmem_map[pgdat->node_start_pfn + i];
-	end_address = PAGE_ALIGN(end_address);
-
-	stop_address = (unsigned long) &vmem_map[
-		pgdat->node_start_pfn + pgdat->node_spanned_pages];
-
-	do {
-		pgd_t *pgd;
-		pud_t *pud;
-		pmd_t *pmd;
-		pte_t *pte;
-
-		pgd = pgd_offset_k(end_address);
-		if (pgd_none(*pgd)) {
-			end_address += PGDIR_SIZE;
-			continue;
-		}
-
-		pud = pud_offset(pgd, end_address);
-		if (pud_none(*pud)) {
-			end_address += PUD_SIZE;
-			continue;
-		}
-
-		pmd = pmd_offset(pud, end_address);
-		if (pmd_none(*pmd)) {
-			end_address += PMD_SIZE;
-			continue;
-		}
-
-		pte = pte_offset_kernel(pmd, end_address);
-retry_pte:
-		if (pte_none(*pte)) {
-			end_address += PAGE_SIZE;
-			pte++;
-			if ((end_address < stop_address) &&
-			    (end_address != ALIGN(end_address, 1UL << PMD_SHIFT)))
-				goto retry_pte;
-			continue;
-		}
-		/* Found next valid vmem_map page */
-		break;
-	} while (end_address < stop_address);
-
-	end_address = min(end_address, stop_address);
-	end_address = end_address - (unsigned long) vmem_map + sizeof(struct page) - 1;
-	hole_next_pfn = end_address / sizeof(struct page);
-	return hole_next_pfn - pgdat->node_start_pfn;
-}
-#else
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
-	return i + 1;
-}
-#endif
-
 /**
  * show_mem - give short summary of memory stats
  *
@@ -625,7 +563,8 @@ void show_mem(void)
 			if (pfn_valid(pgdat->node_start_pfn + i))
 				page = pfn_to_page(pgdat->node_start_pfn + i);
 			else {
-				i = find_next_valid_pfn_for_pgdat(pgdat, i) - 1;
+				i = vmemmap_find_next_valid_pfn(pgdat->node_id,
+					 i) - 1;
 				continue;
 			}
 			if (PageReserved(page))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 2f50c064513c..30617ccb4f7e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -415,6 +415,61 @@ ia64_mmu_init (void *my_cpu_data)
 }
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
+int vmemmap_find_next_valid_pfn(int node, int i)
+{
+	unsigned long end_address, hole_next_pfn;
+	unsigned long stop_address;
+	pg_data_t *pgdat = NODE_DATA(node);
+
+	end_address = (unsigned long) &vmem_map[pgdat->node_start_pfn + i];
+	end_address = PAGE_ALIGN(end_address);
+
+	stop_address = (unsigned long) &vmem_map[
+		pgdat->node_start_pfn + pgdat->node_spanned_pages];
+
+	do {
+		pgd_t *pgd;
+		pud_t *pud;
+		pmd_t *pmd;
+		pte_t *pte;
+
+		pgd = pgd_offset_k(end_address);
+		if (pgd_none(*pgd)) {
+			end_address += PGDIR_SIZE;
+			continue;
+		}
+
+		pud = pud_offset(pgd, end_address);
+		if (pud_none(*pud)) {
+			end_address += PUD_SIZE;
+			continue;
+		}
+
+		pmd = pmd_offset(pud, end_address);
+		if (pmd_none(*pmd)) {
+			end_address += PMD_SIZE;
+			continue;
+		}
+
+		pte = pte_offset_kernel(pmd, end_address);
+retry_pte:
+		if (pte_none(*pte)) {
+			end_address += PAGE_SIZE;
+			pte++;
+			if ((end_address < stop_address) &&
+			    (end_address != ALIGN(end_address, 1UL << PMD_SHIFT)))
+				goto retry_pte;
+			continue;
+		}
+		/* Found next valid vmem_map page */
+		break;
+	} while (end_address < stop_address);
+
+	end_address = min(end_address, stop_address);
+	end_address = end_address - (unsigned long) vmem_map + sizeof(struct page) - 1;
+	hole_next_pfn = end_address / sizeof(struct page);
+	return hole_next_pfn - pgdat->node_start_pfn;
+}
 
 int __init
 create_mem_map_page_table (u64 start, u64 end, void *arg)
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index 894bc4d89dc0..6a33a07b3f1d 100644
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -56,6 +56,11 @@ extern void efi_memmap_init(unsigned long *, unsigned long *);
   extern struct page *vmem_map;
   extern int find_largest_hole (u64 start, u64 end, void *arg);
   extern int create_mem_map_page_table (u64 start, u64 end, void *arg);
+  extern int vmemmap_find_next_valid_pfn(int, int);
+#else
+static inline int vmemmap_find_next_valid_pfn(int node, int i)
+{
+	return i + 1;
+}
 #endif
-
 #endif /* meminit_h */
-- 
cgit v1.2.3


From eca7994f60eb6550d9e9b36d3b641a5a0e18a7c1 Mon Sep 17 00:00:00 2001
From: Dean Nelson <dcn@sgi.com>
Date: Wed, 28 Jun 2006 13:50:09 -0500
Subject: [IA64] make uncached allocator more node aware

The uncached allocator has a function, uncached_get_new_chunk(), that needs
to be serialized on a per node basis. It also has a global variable,
allocated_granules, which should be defined on a per node basis and protected
by that serialization. Additionally, all error returns from functions called
(like ia64_pal_mc_drain()) should be handled appropriately.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Acked-by: Jes Sorenson <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/ia64/kernel/uncached.c | 86 ++++++++++++++++++++++++++++++---------------
 1 file changed, 57 insertions(+), 29 deletions(-)

(limited to 'arch/ia64')

diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index 5f03b9e524dd..4c73a6763669 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -32,32 +32,38 @@
 
 extern void __init efi_memmap_walk_uc(efi_freemem_callback_t, void *);
 
-#define MAX_UNCACHED_GRANULES	5
-static int allocated_granules;
+struct uncached_pool {
+	struct gen_pool *pool;
+	struct mutex add_chunk_mutex;	/* serialize adding a converted chunk */
+	int nchunks_added;		/* #of converted chunks added to pool */
+	atomic_t status;		/* smp called function's return status*/
+};
+
+#define MAX_CONVERTED_CHUNKS_PER_NODE	2
 
-struct gen_pool *uncached_pool[MAX_NUMNODES];
+struct uncached_pool uncached_pools[MAX_NUMNODES];
 
 
 static void uncached_ipi_visibility(void *data)
 {
 	int status;
+	struct uncached_pool *uc_pool = (struct uncached_pool *)data;
 
 	status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
 	if ((status != PAL_VISIBILITY_OK) &&
 	    (status != PAL_VISIBILITY_OK_REMOTE_NEEDED))
-		printk(KERN_DEBUG "pal_prefetch_visibility() returns %i on "
-		       "CPU %i\n", status, raw_smp_processor_id());
+		atomic_inc(&uc_pool->status);
 }
 
 
 static void uncached_ipi_mc_drain(void *data)
 {
 	int status;
+	struct uncached_pool *uc_pool = (struct uncached_pool *)data;
 
 	status = ia64_pal_mc_drain();
-	if (status)
-		printk(KERN_WARNING "ia64_pal_mc_drain() failed with %i on "
-		       "CPU %i\n", status, raw_smp_processor_id());
+	if (status != PAL_STATUS_SUCCESS)
+		atomic_inc(&uc_pool->status);
 }
 
 
@@ -70,21 +76,34 @@ static void uncached_ipi_mc_drain(void *data)
  * This is accomplished by first allocating a granule of cached memory pages
  * and then converting them to uncached memory pages.
  */
-static int uncached_add_chunk(struct gen_pool *pool, int nid)
+static int uncached_add_chunk(struct uncached_pool *uc_pool, int nid)
 {
 	struct page *page;
-	int status, i;
+	int status, i, nchunks_added = uc_pool->nchunks_added;
 	unsigned long c_addr, uc_addr;
 
-	if (allocated_granules >= MAX_UNCACHED_GRANULES)
+	if (mutex_lock_interruptible(&uc_pool->add_chunk_mutex) != 0)
+		return -1;	/* interrupted by a signal */
+
+	if (uc_pool->nchunks_added > nchunks_added) {
+		/* someone added a new chunk while we were waiting */
+		mutex_unlock(&uc_pool->add_chunk_mutex);
+		return 0;
+	}
+
+	if (uc_pool->nchunks_added >= MAX_CONVERTED_CHUNKS_PER_NODE) {
+		mutex_unlock(&uc_pool->add_chunk_mutex);
 		return -1;
+	}
 
 	/* attempt to allocate a granule's worth of cached memory pages */
 
 	page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO,
 				IA64_GRANULE_SHIFT-PAGE_SHIFT);
-	if (!page)
+	if (!page) {
+		mutex_unlock(&uc_pool->add_chunk_mutex);
 		return -1;
+	}
 
 	/* convert the memory pages from cached to uncached */
 
@@ -102,11 +121,14 @@ static int uncached_add_chunk(struct gen_pool *pool, int nid)
 	flush_tlb_kernel_range(uc_addr, uc_adddr + IA64_GRANULE_SIZE);
 
 	status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
-	if (!status) {
-		status = smp_call_function(uncached_ipi_visibility, NULL, 0, 1);
-		if (status)
+	if (status == PAL_VISIBILITY_OK_REMOTE_NEEDED) {
+		atomic_set(&uc_pool->status, 0);
+		status = smp_call_function(uncached_ipi_visibility, uc_pool,
+					   0, 1);
+		if (status || atomic_read(&uc_pool->status))
 			goto failed;
-	}
+	} else if (status != PAL_VISIBILITY_OK)
+		goto failed;
 
 	preempt_disable();
 
@@ -120,20 +142,24 @@ static int uncached_add_chunk(struct gen_pool *pool, int nid)
 
 	preempt_enable();
 
-	ia64_pal_mc_drain();
-	status = smp_call_function(uncached_ipi_mc_drain, NULL, 0, 1);
-	if (status)
+	status = ia64_pal_mc_drain();
+	if (status != PAL_STATUS_SUCCESS)
+		goto failed;
+	atomic_set(&uc_pool->status, 0);
+	status = smp_call_function(uncached_ipi_mc_drain, uc_pool, 0, 1);
+	if (status || atomic_read(&uc_pool->status))
 		goto failed;
 
 	/*
 	 * The chunk of memory pages has been converted to uncached so now we
 	 * can add it to the pool.
 	 */
-	status = gen_pool_add(pool, uc_addr, IA64_GRANULE_SIZE, nid);
+	status = gen_pool_add(uc_pool->pool, uc_addr, IA64_GRANULE_SIZE, nid);
 	if (status)
 		goto failed;
 
-	allocated_granules++;
+	uc_pool->nchunks_added++;
+	mutex_unlock(&uc_pool->add_chunk_mutex);
 	return 0;
 
 	/* failed to convert or add the chunk so give it back to the kernel */
@@ -142,6 +168,7 @@ failed:
 		ClearPageUncached(&page[i]);
 
 	free_pages(c_addr, IA64_GRANULE_SHIFT-PAGE_SHIFT);
+	mutex_unlock(&uc_pool->add_chunk_mutex);
 	return -1;
 }
 
@@ -158,7 +185,7 @@ failed:
 unsigned long uncached_alloc_page(int starting_nid)
 {
 	unsigned long uc_addr;
-	struct gen_pool *pool;
+	struct uncached_pool *uc_pool;
 	int nid;
 
 	if (unlikely(starting_nid >= MAX_NUMNODES))
@@ -171,14 +198,14 @@ unsigned long uncached_alloc_page(int starting_nid)
 	do {
 		if (!node_online(nid))
 			continue;
-		pool = uncached_pool[nid];
-		if (pool == NULL)
+		uc_pool = &uncached_pools[nid];
+		if (uc_pool->pool == NULL)
 			continue;
 		do {
-			uc_addr = gen_pool_alloc(pool, PAGE_SIZE);
+			uc_addr = gen_pool_alloc(uc_pool->pool, PAGE_SIZE);
 			if (uc_addr != 0)
 				return uc_addr;
-		} while (uncached_add_chunk(pool, nid) == 0);
+		} while (uncached_add_chunk(uc_pool, nid) == 0);
 
 	} while ((nid = (nid + 1) % MAX_NUMNODES) != starting_nid);
 
@@ -197,7 +224,7 @@ EXPORT_SYMBOL(uncached_alloc_page);
 void uncached_free_page(unsigned long uc_addr)
 {
 	int nid = paddr_to_nid(uc_addr - __IA64_UNCACHED_OFFSET);
-	struct gen_pool *pool = uncached_pool[nid];
+	struct gen_pool *pool = uncached_pools[nid].pool;
 
 	if (unlikely(pool == NULL))
 		return;
@@ -224,7 +251,7 @@ static int __init uncached_build_memmap(unsigned long uc_start,
 					unsigned long uc_end, void *arg)
 {
 	int nid = paddr_to_nid(uc_start - __IA64_UNCACHED_OFFSET);
-	struct gen_pool *pool = uncached_pool[nid];
+	struct gen_pool *pool = uncached_pools[nid].pool;
 	size_t size = uc_end - uc_start;
 
 	touch_softlockup_watchdog();
@@ -242,7 +269,8 @@ static int __init uncached_init(void)
 	int nid;
 
 	for_each_online_node(nid) {
-		uncached_pool[nid] = gen_pool_create(PAGE_SHIFT, nid);
+		uncached_pools[nid].pool = gen_pool_create(PAGE_SHIFT, nid);
+		mutex_init(&uncached_pools[nid].add_chunk_mutex);
 	}
 
 	efi_memmap_walk_uc(uncached_build_memmap, NULL);
-- 
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