diff options
Diffstat (limited to 'arch/i386/kernel/kprobes.c')
| -rw-r--r-- | arch/i386/kernel/kprobes.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c index 37f8623..727e419 100644 --- a/arch/i386/kernel/kprobes.c +++ b/arch/i386/kernel/kprobes.c @@ -259,7 +259,9 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) struct kprobe_ctlblk *kcb; #ifdef CONFIG_PREEMPT unsigned pre_preempt_count = preempt_count(); -#endif /* CONFIG_PREEMPT */ +#else + unsigned pre_preempt_count = 1; +#endif addr = (kprobe_opcode_t *)(regs->eip - sizeof(kprobe_opcode_t)); @@ -336,22 +338,14 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) /* handler has already set things up, so skip ss setup */ return 1; - if (p->ainsn.boostable == 1 && -#ifdef CONFIG_PREEMPT - !(pre_preempt_count) && /* - * This enables booster when the direct - * execution path aren't preempted. - */ -#endif /* CONFIG_PREEMPT */ - !p->post_handler && !p->break_handler ) { +ss_probe: + if (pre_preempt_count && p->ainsn.boostable == 1 && !p->post_handler){ /* Boost up -- we can execute copied instructions directly */ reset_current_kprobe(); regs->eip = (unsigned long)p->ainsn.insn; preempt_enable_no_resched(); return 1; } - -ss_probe: prepare_singlestep(p, regs); kcb->kprobe_status = KPROBE_HIT_SS; return 1; |