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[IA64] optimize pagefaults a little

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Get rid of the notifier list and call the kprobes code directly
if compiled in.  This mirrors the changes that recently went
into powerpc, s390 and sparc64.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Christoph Hellwig
2007-05-16 14:52:19 +02:00
committed by Tony Luck
parent 17028c5c91
commit 576fe0bd7e
4 changed files with 28 additions and 37 deletions
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9
arch/ia64/kernel/kprobes.c
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@@ -820,7 +820,7 @@ out:
return 1;
}
static int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
{
struct kprobe *cur = kprobe_running();
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -904,13 +904,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
if (post_kprobes_handler(args->regs))
ret = NOTIFY_STOP;
break;
case DIE_PAGE_FAULT:
/* kprobe_running() needs smp_processor_id() */
preempt_disable();
if (kprobe_running() &&
kprobes_fault_handler(args->regs, args->trapnr))
ret = NOTIFY_STOP;
preempt_enable();
default:
break;
}