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Message-ID: <20061201075050.GA30051@linux-sh.org> Date: Fri, 1 Dec 2006 16:50:50 +0900 From: Paul Mundt <lethal@...ux-sh.org> To: Haavard Skinnemoen <hskinnemoen@...el.com> Cc: linux-kernel@...r.kernel.org Subject: [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. Patch follows. -- diff --git a/arch/avr32/kernel/kprobes.c b/arch/avr32/kernel/kprobes.c index ca41fc1..d0abbca 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; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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