linux-kernel - Re: [PATCH] avr32: Fixup kprobes preemption handling.

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Message-ID: <20061201075312.GA30434@linux-sh.org>
Date:	Fri, 1 Dec 2006 16:53:12 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Haavard Skinnemoen <hskinnemoen@...el.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] avr32: Fixup kprobes preemption handling.

On Fri, Dec 01, 2006 at 04:50:50PM +0900, Paul Mundt wrote:
> 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.
> 
And that's of course..

Signed-off-by: Paul Mundt <lethal@...ux-sh.org>
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