diff options
Diffstat (limited to 'arch/x86_64/kernel/kprobes.c')
| -rw-r--r-- | arch/x86_64/kernel/kprobes.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c index afe11f4fbd1d..8b8943bfb89e 100644 --- a/arch/x86_64/kernel/kprobes.c +++ b/arch/x86_64/kernel/kprobes.c @@ -42,8 +42,8 @@ #include <asm/pgtable.h> #include <asm/kdebug.h> -static DECLARE_MUTEX(kprobe_mutex); void jprobe_return_end(void); +void __kprobes arch_copy_kprobe(struct kprobe *p); DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL; DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); @@ -69,12 +69,11 @@ static inline int is_IF_modifier(kprobe_opcode_t *insn) int __kprobes arch_prepare_kprobe(struct kprobe *p) { /* insn: must be on special executable page on x86_64. */ - down(&kprobe_mutex); p->ainsn.insn = get_insn_slot(); - up(&kprobe_mutex); if (!p->ainsn.insn) { return -ENOMEM; } + arch_copy_kprobe(p); return 0; } @@ -223,9 +222,7 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p) void __kprobes arch_remove_kprobe(struct kprobe *p) { - down(&kprobe_mutex); free_insn_slot(p->ainsn.insn); - up(&kprobe_mutex); } static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb) |