From e6f47f978bcd5413fff610613b18e9e0eab9bc1b Mon Sep 17 00:00:00 2001 From: Anil S Keshavamurthy Date: Mon, 26 Jun 2006 00:25:29 -0700 Subject: [PATCH] Notify page fault call chain With this patch Kprobes now registers for page fault notifications only when their is an active probe registered. Once all the active probes are unregistered their is no need to be notified of page faults and kprobes unregisters itself from the page fault notifications. Hence we will have ZERO side effects when no probes are active. Signed-off-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-x86_64/kprobes.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-x86_64') diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h index 98a1e95ddb98..d36febd9bb18 100644 --- a/include/asm-x86_64/kprobes.h +++ b/include/asm-x86_64/kprobes.h @@ -43,6 +43,7 @@ typedef u8 kprobe_opcode_t; #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry #define ARCH_SUPPORTS_KRETPROBES +#define ARCH_INACTIVE_KPROBE_COUNT 1 void kretprobe_trampoline(void); extern void arch_remove_kprobe(struct kprobe *p); -- cgit v1.2.3