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-rw-r--r--arch/i386/kernel/traps.c17
1 files changed, 8 insertions, 9 deletions
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);
92asmlinkage void machine_check(void); 92asmlinkage void machine_check(void);
93 93
94static int kstack_depth_to_print = 24; 94static int kstack_depth_to_print = 24;
95struct notifier_block *i386die_chain; 95ATOMIC_NOTIFIER_HEAD(i386die_chain);
96static DEFINE_SPINLOCK(die_notifier_lock);
97 96
98int register_die_notifier(struct notifier_block *nb) 97int register_die_notifier(struct notifier_block *nb)
99{ 98{
100 int err = 0;
101 unsigned long flags;
102
103 vmalloc_sync_all(); 99 vmalloc_sync_all();
104 spin_lock_irqsave(&die_notifier_lock, flags); 100 return atomic_notifier_chain_register(&i386die_chain, nb);
105 err = notifier_chain_register(&i386die_chain, nb);
106 spin_unlock_irqrestore(&die_notifier_lock, flags);
107 return err;
108} 101}
109EXPORT_SYMBOL(register_die_notifier); 102EXPORT_SYMBOL(register_die_notifier);
110 103
104int unregister_die_notifier(struct notifier_block *nb)
105{
106 return atomic_notifier_chain_unregister(&i386die_chain, nb);
107}
108EXPORT_SYMBOL(unregister_die_notifier);
109
111static inline int valid_stack_ptr(struct thread_info *tinfo, void *p) 110static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
112{ 111{
113 return p > (void *)tinfo && 112 return p > (void *)tinfo &&