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authorChristoph Hellwig <hch@lst.de>2007-05-12 17:56:11 +0200
committerHaavard Skinnemoen <hskinnemoen@atmel.com>2007-05-13 17:07:46 +0200
commit9caebec7b8093574fca5a334a1939530872d75e3 (patch)
tree344415b09f6c08dfc8741420f7410f4e6105b584 /arch/avr32/kernel
parent5d1938c83ca826891a02badef7c9ea8ed57e01a2 (diff)
[AVR32] optimize pagefault path
Avoid the costly notifier list in the pagefault path and call the kprobes code directly. The same change went into the 2.6.22 cycle for powerpc, 2s390 and sparc64 already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32/kernel')
-rw-r--r--arch/avr32/kernel/kprobes.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/avr32/kernel/kprobes.c b/arch/avr32/kernel/kprobes.c
index 004c94b6fc1..4942ee662e0 100644
--- a/arch/avr32/kernel/kprobes.c
+++ b/arch/avr32/kernel/kprobes.c
@@ -179,7 +179,7 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs)
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();
@@ -216,11 +216,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
if (post_kprobe_handler(args->regs))
ret = NOTIFY_STOP;
break;
- case DIE_FAULT:
- if (kprobe_running()
- && kprobe_fault_handler(args->regs, args->trapnr))
- ret = NOTIFY_STOP;
- break;
default:
break;
}