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| author | Christoph Hellwig <hch@infradead.org> | 2007-04-30 11:56:46 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-02 20:57:39 +1000 |
| commit | 9f90b997de4efd5404a8c52f89c400f0f4e2d216 (patch) | |
| tree | 7dd6adc27b196e672fedd464a42700e336cd210a /arch/powerpc/kernel/kprobes.c | |
| parent | eb609e52d188775da738a1ffd1e982e6212c77d7 (diff) | |
| download | linux-9f90b997de4efd5404a8c52f89c400f0f4e2d216.tar.gz linux-9f90b997de4efd5404a8c52f89c400f0f4e2d216.tar.bz2 linux-9f90b997de4efd5404a8c52f89c400f0f4e2d216.zip | |
[POWERPC] Minor fault path optimization
Call the kprobes pagefault handler directly instead of going through
the complex notifier chain.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/kprobes.c')
| -rw-r--r-- | arch/powerpc/kernel/kprobes.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c index ef647e7a9dc3..c27f41870c8f 100644 --- a/arch/powerpc/kernel/kprobes.c +++ b/arch/powerpc/kernel/kprobes.c @@ -410,7 +410,7 @@ out: return 1; } -static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr) +int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr) { struct kprobe *cur = kprobe_running(); struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); @@ -495,14 +495,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self, if (post_kprobe_handler(args->regs)) ret = NOTIFY_STOP; break; - case DIE_PAGE_FAULT: - /* kprobe_running() needs smp_processor_id() */ - preempt_disable(); - if (kprobe_running() && - kprobe_fault_handler(args->regs, args->trapnr)) - ret = NOTIFY_STOP; - preempt_enable(); - break; default: break; } |