From 4d3eeeac97a6e4fc1ff3ad184f1c3bf328de7cb6 Mon Sep 17 00:00:00 2001 From: Paul Mundt <lethal@linux-sh.org> Date: Wed, 6 Dec 2006 20:33:54 -0800 Subject: [PATCH] [PATCH] avr32: fixup kprobes preemption handling While working on SH kprobes, I noticed that avr32 got the preemption handling wrong in the no probe case. The idea is that upon entry of kprobe_handler() preemption is disabled outright across the life of the kprobe, only to be re-enabled in post_kprobe_handler(). However, in the event that the probe is never activated, there's never any chance of hitting the post probe handler, which allows for the current avr32 implementation to disable preemption indefinitely, as it's currently missing a re-enable when no probe is activated. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> --- arch/avr32/kernel/kprobes.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/avr32/kernel/kprobes.c b/arch/avr32/kernel/kprobes.c index ca41fc1edbe1..d0abbcaf1c1e 100644 --- a/arch/avr32/kernel/kprobes.c +++ b/arch/avr32/kernel/kprobes.c @@ -154,6 +154,7 @@ ss_probe: return 1; no_kprobe: + preempt_enable_no_resched(); return ret; } -- GitLab