From: Paul Mundt <lethal@linux-sh.org>
To: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] avr32: Fixup kprobes preemption handling.
Date: Fri, 1 Dec 2006 16:53:12 +0900 [thread overview]
Message-ID: <20061201075312.GA30434@linux-sh.org> (raw)
In-Reply-To: <20061201075050.GA30051@linux-sh.org>
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@linux-sh.org>
next prev parent reply other threads:[~2006-12-01 7:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-01 7:50 [PATCH] avr32: Fixup kprobes preemption handling Paul Mundt
2006-12-01 7:53 ` Paul Mundt [this message]
2006-12-01 12:59 ` Haavard Skinnemoen
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