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-rw-r--r--arch/x86_64/mm/fault.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 449a437f5d70..3ae3e7bb2fce 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -40,8 +40,7 @@
40#define PF_RSVD (1<<3) 40#define PF_RSVD (1<<3)
41#define PF_INSTR (1<<4) 41#define PF_INSTR (1<<4)
42 42
43#ifdef CONFIG_KPROBES 43static ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
44ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
45 44
46/* Hook to register for page fault notifications */ 45/* Hook to register for page fault notifications */
47int register_page_fault_notifier(struct notifier_block *nb) 46int register_page_fault_notifier(struct notifier_block *nb)
@@ -49,11 +48,13 @@ int register_page_fault_notifier(struct notifier_block *nb)
49 vmalloc_sync_all(); 48 vmalloc_sync_all();
50 return atomic_notifier_chain_register(&notify_page_fault_chain, nb); 49 return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
51} 50}
51EXPORT_SYMBOL_GPL(register_page_fault_notifier);
52 52
53int unregister_page_fault_notifier(struct notifier_block *nb) 53int unregister_page_fault_notifier(struct notifier_block *nb)
54{ 54{
55 return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb); 55 return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
56} 56}
57EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
57 58
58static inline int notify_page_fault(enum die_val val, const char *str, 59static inline int notify_page_fault(enum die_val val, const char *str,
59 struct pt_regs *regs, long err, int trap, int sig) 60 struct pt_regs *regs, long err, int trap, int sig)
@@ -67,13 +68,6 @@ static inline int notify_page_fault(enum die_val val, const char *str,
67 }; 68 };
68 return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args); 69 return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
69} 70}
70#else
71static inline int notify_page_fault(enum die_val val, const char *str,
72 struct pt_regs *regs, long err, int trap, int sig)
73{
74 return NOTIFY_DONE;
75}
76#endif
77 71
78void bust_spinlocks(int yes) 72void bust_spinlocks(int yes)
79{ 73{