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| author |   Borislav Petkov <borislav.petkov@amd.com> | 2012-09-20 14:43:54 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2012-09-20 14:48:16 +0200 |
| commit | 50a011f6409e888d5f41343024d24885281f048c (patch) | |
| tree | 53bee4c687336223bcba7916c73b3072bd60c8fa | |
| parent | perf: Fix off by one test in perf_reg_value() (diff) | |
| download | linux-dev-50a011f6409e888d5f41343024d24885281f048c.tar.xz linux-dev-50a011f6409e888d5f41343024d24885281f048c.zip | |
kprobes/x86: Move skip_singlestep up
I get this warning:
arch/x86/kernel/kprobes.c:544:23: warning: ‘skip_singlestep’ declared ‘static’ but never defined
on tip/auto-latest.
Put the skip_singlestep function declaration up, in
KPROBES_CAN_USE_FTRACE and drop the superfluous forward
declaration.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1348145034-16603-1-git-send-email-bp@amd64.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/kprobes.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c index b7c2a85d1926..57916c0d3cf6 100644 --- a/arch/x86/kernel/kprobes.c +++ b/arch/x86/kernel/kprobes.c @@ -541,8 +541,23 @@ reenter_kprobe(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb return 1; } +#ifdef KPROBES_CAN_USE_FTRACE static void __kprobes skip_singlestep(struct kprobe *p, struct pt_regs *regs, - struct kprobe_ctlblk *kcb); + struct kprobe_ctlblk *kcb) +{ + /* + * Emulate singlestep (and also recover regs->ip) + * as if there is a 5byte nop + */ + regs->ip = (unsigned long)p->addr + MCOUNT_INSN_SIZE; + if (unlikely(p->post_handler)) { + kcb->kprobe_status = KPROBE_HIT_SSDONE; + p->post_handler(p, regs, 0); + } + __this_cpu_write(current_kprobe, NULL); +} +#endif + /* * Interrupts are disabled on entry as trap3 is an interrupt gate and they * remain disabled throughout this function. @@ -1061,21 +1076,6 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) } #ifdef KPROBES_CAN_USE_FTRACE -static void __kprobes skip_singlestep(struct kprobe *p, struct pt_regs *regs, - struct kprobe_ctlblk *kcb) -{ - /* - * Emulate singlestep (and also recover regs->ip) - * as if there is a 5byte nop - */ - regs->ip = (unsigned long)p->addr + MCOUNT_INSN_SIZE; - if (unlikely(p->post_handler)) { - kcb->kprobe_status = KPROBE_HIT_SSDONE; - p->post_handler(p, regs, 0); - } - __this_cpu_write(current_kprobe, NULL); -} - /* Ftrace callback handler for kprobes */ void __kprobes kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *ops, struct pt_regs *regs) |