From f709b122343fb9a010b6cf2d5559641f1820f7c9 Mon Sep 17 00:00:00 2001 From: Keshavamurthy Anil S Date: Mon, 9 Jan 2006 20:52:44 -0800 Subject: [PATCH] kprobes-changed-from-using-spinlock-to-mutex fix Based on some feedback from Oleg Nesterov, I have made few changes to previously posted patch. Signed-off-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/kernel/kprobes.c | 3 --- arch/x86_64/kernel/kprobes.c | 4 ++-- 2 files changed, 2 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c index 331e169e8629..2cd32dd6898b 100644 --- a/arch/powerpc/kernel/kprobes.c +++ b/arch/powerpc/kernel/kprobes.c @@ -35,7 +35,6 @@ #include #include -static DECLARE_MUTEX(kprobe_mutex); DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL; DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); @@ -54,9 +53,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) /* insn must be on a special executable page on ppc64 */ if (!ret) { - down(&kprobe_mutex); p->ainsn.insn = get_insn_slot(); - up(&kprobe_mutex); if (!p->ainsn.insn) ret = -ENOMEM; } diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c index 8b8943bfb89e..128e18190f99 100644 --- a/arch/x86_64/kernel/kprobes.c +++ b/arch/x86_64/kernel/kprobes.c @@ -43,7 +43,7 @@ #include void jprobe_return_end(void); -void __kprobes arch_copy_kprobe(struct kprobe *p); +static void __kprobes arch_copy_kprobe(struct kprobe *p); DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL; DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); @@ -180,7 +180,7 @@ static inline s32 *is_riprel(u8 *insn) return NULL; } -void __kprobes arch_copy_kprobe(struct kprobe *p) +static void __kprobes arch_copy_kprobe(struct kprobe *p) { s32 *ripdisp; memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE); -- cgit v1.2.2