20 files changed, 72 insertions, 72 deletions

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 9402624453c2..dd8769670596 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -43,7 +43,7 @@
 #include <asm/setup.h>
 #include <asm/io.h>
 
-extern struct notifier_block *panic_notifier_list;
+extern struct atomic_notifier_head panic_notifier_list;
 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
 static struct notifier_block alpha_panic_block = {
         alpha_panic_event,
@@ -500,7 +500,8 @@ setup_arch(char **cmdline_p)
         }
 
         /* Register a call for panic conditions. */
-        notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list,
+                        &alpha_panic_block);
 
 #ifdef CONFIG_ALPHA_GENERIC
         /* Assume that we've booted from SRM if we haven't booted from MILO.
diff --git a/arch/arm/mach-omap1/board-netstar.c b/arch/arm/mach-omap1/board-netstar.c
index 60d5f8a3339c..7520e602d7a2 100644
--- a/arch/arm/mach-omap1/board-netstar.c
+++ b/arch/arm/mach-omap1/board-netstar.c
@@ -141,7 +141,7 @@ static int __init netstar_late_init(void)
         /* TODO: Setup front panel switch here */
 
         /* Setup panic notifier */
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         return 0;
 }
diff --git a/arch/arm/mach-omap1/board-voiceblue.c b/arch/arm/mach-omap1/board-voiceblue.c
index bfd5fdd1a875..52e4a9d69642 100644
--- a/arch/arm/mach-omap1/board-voiceblue.c
+++ b/arch/arm/mach-omap1/board-voiceblue.c
@@ -235,7 +235,7 @@ static struct notifier_block panic_block = {
 static int __init voiceblue_setup(void)
 {
         /* Setup panic notifier */
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         return 0;
 }
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 4624f8ca2459..6b63a5aa1e46 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -92,22 +92,21 @@ asmlinkage void spurious_interrupt_bug(void);
 asmlinkage void machine_check(void);
 
 static int kstack_depth_to_print = 24;
-struct notifier_block *i386die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(i386die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
-
         vmalloc_sync_all();
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&i386die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+        return atomic_notifier_chain_register(&i386die_chain, nb);
 }
 EXPORT_SYMBOL(register_die_notifier);
 
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&i386die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
+
 static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
 {
         return  p > (void *)tinfo &&
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index dabd6c32641e..7c1ddc8ac443 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -30,19 +30,19 @@ extern spinlock_t timerlist_lock;
 fpswa_interface_t *fpswa_interface;
 EXPORT_SYMBOL(fpswa_interface);
 
-struct notifier_block *ia64die_chain;
+ATOMIC_NOTIFIER_HEAD(ia64die_chain);
 
 int
 register_die_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_register(&ia64die_chain, nb);
+        return atomic_notifier_chain_register(&ia64die_chain, nb);
 }
 EXPORT_SYMBOL_GPL(register_die_notifier);
 
 int
 unregister_die_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_unregister(&ia64die_chain, nb);
+        return atomic_notifier_chain_unregister(&ia64die_chain, nb);
 }
 EXPORT_SYMBOL_GPL(unregister_die_notifier);
 
diff --git a/arch/mips/lasat/setup.c b/arch/mips/lasat/setup.c
index 83eb08b7a072..e9e9a89c6741 100644
--- a/arch/mips/lasat/setup.c
+++ b/arch/mips/lasat/setup.c
@@ -165,7 +165,8 @@ void __init plat_setup(void)
 
         /* Set up panic notifier */
         for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
-                notifier_chain_register(&panic_notifier_list, &lasat_panic_block[i]);
+                atomic_notifier_chain_register(&panic_notifier_list,
+                                &lasat_panic_block[i]);
 
         lasat_reboot_setup();
 
diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
index 92a3b3c15ed3..a9c58e067b53 100644
--- a/arch/mips/sgi-ip22/ip22-reset.c
+++ b/arch/mips/sgi-ip22/ip22-reset.c
@@ -238,7 +238,7 @@ static int __init reboot_setup(void)
         request_irq(SGI_PANEL_IRQ, panel_int, 0, "Front Panel", NULL);
         init_timer(&blink_timer);
         blink_timer.function = blink_timeout;
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         return 0;
 }
diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c
index 0c948008b023..ab9d9cef089e 100644
--- a/arch/mips/sgi-ip32/ip32-reset.c
+++ b/arch/mips/sgi-ip32/ip32-reset.c
@@ -193,7 +193,7 @@ static __init int ip32_reboot_setup(void)
 
         init_timer(&blink_timer);
         blink_timer.function = blink_timeout;
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL);
 
diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c
index 2a01fe1bdc98..0cea6958f427 100644
--- a/arch/parisc/kernel/pdc_chassis.c
+++ b/arch/parisc/kernel/pdc_chassis.c
@@ -150,7 +150,8 @@ void __init parisc_pdc_chassis_init(void)
 
                 if (handle) {
                         /* initialize panic notifier chain */
-                        notifier_chain_register(&panic_notifier_list, &pdc_chassis_panic_block);
+                        atomic_notifier_chain_register(&panic_notifier_list,
+                                        &pdc_chassis_panic_block);
 
                         /* initialize reboot notifier chain */
                         register_reboot_notifier(&pdc_chassis_reboot_block);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 2f3fdad35594..e20c1fae3423 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -579,7 +579,8 @@ void __init setup_arch(char **cmdline_p)
         panic_timeout = 180;
 
         if (ppc_md.panic)
-                notifier_chain_register(&panic_notifier_list, &ppc64_panic_block);
+                atomic_notifier_chain_register(&panic_notifier_list,
+                                &ppc64_panic_block);
 
         init_mm.start_code = PAGE_OFFSET;
         init_mm.end_code = (unsigned long) _etext;
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 98660aedeeb7..9763faab6739 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -74,19 +74,19 @@ EXPORT_SYMBOL(__debugger_dabr_match);
 EXPORT_SYMBOL(__debugger_fault_handler);
 #endif
 
-struct notifier_block *powerpc_die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(powerpc_die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
+        return atomic_notifier_chain_register(&powerpc_die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
 
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&powerpc_die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&powerpc_die_chain, nb);
 }
+EXPORT_SYMBOL(unregister_die_notifier);
 
 /*
  * Trap & Exception support
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 86cfa6ecdcf3..5ad90676567a 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -94,16 +94,16 @@ static struct device_node *derive_parent(const char *path)
         return parent;
 }
 
-static struct notifier_block *pSeries_reconfig_chain;
+static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
 
 int pSeries_reconfig_notifier_register(struct notifier_block *nb)
 {
-        return notifier_chain_register(&pSeries_reconfig_chain, nb);
+        return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb);
 }
 
 void pSeries_reconfig_notifier_unregister(struct notifier_block *nb)
 {
-        notifier_chain_unregister(&pSeries_reconfig_chain, nb);
+        blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb);
 }
 
 static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
@@ -131,7 +131,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
                 goto out_err;
         }
 
-        err = notifier_call_chain(&pSeries_reconfig_chain,
+        err = blocking_notifier_call_chain(&pSeries_reconfig_chain,
                                   PSERIES_RECONFIG_ADD, np);
         if (err == NOTIFY_BAD) {
                 printk(KERN_ERR "Failed to add device node %s\n", path);
@@ -171,7 +171,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
 
         remove_node_proc_entries(np);
 
-        notifier_call_chain(&pSeries_reconfig_chain,
+        blocking_notifier_call_chain(&pSeries_reconfig_chain,
                             PSERIES_RECONFIG_REMOVE, np);
         of_detach_node(np);
 
diff --git a/arch/ppc/platforms/prep_setup.c b/arch/ppc/platforms/prep_setup.c
index a0fc628ffb1e..d95c05d9824d 100644
--- a/arch/ppc/platforms/prep_setup.c
+++ b/arch/ppc/platforms/prep_setup.c
@@ -736,7 +736,7 @@ ibm_statusled_progress(char *s, unsigned short hex)
                 hex = 0xfff;
                 if (!notifier_installed) {
                         ++notifier_installed;
-                        notifier_chain_register(&panic_notifier_list,
+                        atomic_notifier_chain_register(&panic_notifier_list,
                                                 &ibm_statusled_block);
                 }
         }
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 99182a415fe7..4a0f5a1551ea 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -76,17 +76,17 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
 /*
  * Need to know about CPUs going idle?
  */
-static struct notifier_block *idle_chain;
+static ATOMIC_NOTIFIER_HEAD(idle_chain);
 
 int register_idle_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_register(&idle_chain, nb);
+        return atomic_notifier_chain_register(&idle_chain, nb);
 }
 EXPORT_SYMBOL(register_idle_notifier);
 
 int unregister_idle_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_unregister(&idle_chain, nb);
+        return atomic_notifier_chain_unregister(&idle_chain, nb);
 }
 EXPORT_SYMBOL(unregister_idle_notifier);
 
@@ -95,7 +95,7 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code)
         /* disable monitor call class 0 */
         __ctl_clear_bit(8, 15);
 
-        notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
+        atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
                             (void *)(long) smp_processor_id());
 }
 
@@ -116,7 +116,8 @@ static void default_idle(void)
                 return;
         }
 
-        rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu);
+        rc = atomic_notifier_call_chain(&idle_chain,
+                        CPU_IDLE, (void *)(long) cpu);
         if (rc != NOTIFY_OK && rc != NOTIFY_DONE)
                 BUG();
         if (rc != NOTIFY_OK) {
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index df612e4f75f9..ff090bb9734b 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -43,18 +43,19 @@
 #include <linux/kmod.h>
 #endif
 
-struct notifier_block *sparc64die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(sparc64die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&sparc64die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+        return atomic_notifier_chain_register(&sparc64die_chain, nb);
 }
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&sparc64die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
 
 /* When an irrecoverable trap occurs at tl > 0, the trap entry
  * code logs the trap state registers at every level in the trap
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 54388d10bcf9..1488816588ea 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -762,7 +762,8 @@ static struct notifier_block panic_exit_notifier = {
 
 static int add_notifier(void)
 {
-        notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+        atomic_notifier_chain_register(&panic_notifier_list,
+                        &panic_exit_notifier);
         return(0);
 }
 
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index bb1c87211ac1..7d51dd7201c3 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -477,7 +477,8 @@ static struct notifier_block panic_exit_notifier = {
 
 void __init setup_arch(char **cmdline_p)
 {
-        notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+        atomic_notifier_chain_register(&panic_notifier_list,
+                        &panic_exit_notifier);
         paging_init();
         strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
         *cmdline_p = command_line;
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 0370720515f1..70dd8e5c6889 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -66,24 +66,17 @@ EXPORT_SYMBOL(boot_option_idle_override);
 void (*pm_idle)(void);
 static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
 
-static struct notifier_block *idle_notifier;
-static DEFINE_SPINLOCK(idle_notifier_lock);
+static ATOMIC_NOTIFIER_HEAD(idle_notifier);
 
 void idle_notifier_register(struct notifier_block *n)
 {
-        unsigned long flags;
-        spin_lock_irqsave(&idle_notifier_lock, flags);
-        notifier_chain_register(&idle_notifier, n);
-        spin_unlock_irqrestore(&idle_notifier_lock, flags);
+        atomic_notifier_chain_register(&idle_notifier, n);
 }
 EXPORT_SYMBOL_GPL(idle_notifier_register);
 
 void idle_notifier_unregister(struct notifier_block *n)
 {
-        unsigned long flags;
-        spin_lock_irqsave(&idle_notifier_lock, flags);
-        notifier_chain_unregister(&idle_notifier, n);
-        spin_unlock_irqrestore(&idle_notifier_lock, flags);
+        atomic_notifier_chain_unregister(&idle_notifier, n);
 }
 EXPORT_SYMBOL(idle_notifier_unregister);
 
@@ -93,13 +86,13 @@ static DEFINE_PER_CPU(enum idle_state, idle_state) = CPU_NOT_IDLE;
 void enter_idle(void)
 {
         __get_cpu_var(idle_state) = CPU_IDLE;
-        notifier_call_chain(&idle_notifier, IDLE_START, NULL);
+        atomic_notifier_call_chain(&idle_notifier, IDLE_START, NULL);
 }
 
 static void __exit_idle(void)
 {
         __get_cpu_var(idle_state) = CPU_NOT_IDLE;
-        notifier_call_chain(&idle_notifier, IDLE_END, NULL);
+        atomic_notifier_call_chain(&idle_notifier, IDLE_END, NULL);
 }
 
 /* Called from interrupts to signify idle end */
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 7b148309c529..edaa9fe654dc 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -69,20 +69,20 @@ asmlinkage void alignment_check(void);
 asmlinkage void machine_check(void);
 asmlinkage void spurious_interrupt_bug(void);
 
-struct notifier_block *die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
-
         vmalloc_sync_all();
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+        return atomic_notifier_chain_register(&die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&die_chain, nb);
 }
+EXPORT_SYMBOL(unregister_die_notifier);
 
 static inline void conditional_sti(struct pt_regs *regs)
 {
diff --git a/arch/xtensa/platform-iss/setup.c b/arch/xtensa/platform-iss/setup.c
index 2e6dcbf0cc04..23790a5610e2 100644
--- a/arch/xtensa/platform-iss/setup.c
+++ b/arch/xtensa/platform-iss/setup.c
@@ -108,5 +108,5 @@ static struct notifier_block iss_panic_block = {
 
 void __init platform_setup(char **p_cmdline)
 {
-        notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
 }