From: Tejun Heo <tj@kernel.org>
To: Yong Zhang <yong.zhang0@gmail.com>
Cc: Andy Walls <awalls@md.metrocast.net>,
linux-kernel@vger.kernel.org, nicolas.mailhot@laposte.net,
Jarod Wilson <jarod@redhat.com>, Ingo Molnar <mingo@redhat.com>,
Mauro Carvalho Chehab <mchehab@redhat.com>,
Hans Verkuil <hverkuil@xs4all.nl>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [V2 PATCH] kthread_work: Make lockdep happy
Date: Tue, 21 Dec 2010 13:59:36 +0100 [thread overview]
Message-ID: <20101221125934.GA13285@htj.dyndns.org> (raw)
In-Reply-To: <20101221044050.GA25718@windriver.com>
Hello,
On Tue, Dec 21, 2010 at 12:40:50PM +0800, Yong Zhang wrote:
> From: Yong Zhang <yong.zhang0@gmail.com>
> Subject: [V2 PATCH] kthread_work: Make lockdep happy
>
> spinlock in kthread_worker and wait_queue_head in kthread_work
> both should be lockdep sensible.
> So change the interface to make it suiltable for CONFIG_LOCKDEP.
>
> Reported-by: Nicolas <nicolas.mailhot@laposte.net>
> Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
> Cc: Tejun Heo <tj@kernel.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Andy Walls <awalls@md.metrocast.net>
> ---
> Changes from V1:
> *According to Tejun, kthread_worker could be defined on stack,
> So introduce DEFINE_KTHREAD_WORKER_ONSTACK.
> *Change wrong setting to kthread_work->task. Thanks Adny for
> pointing it.
> *including some minor issue.
>
> BTW, only passed build.
If somebody can confirm this makes lockdep behave correctly, I'll
route it through the wq tree.
Thanks.
--
tejun
next prev parent reply other threads:[~2010-12-21 12:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-19 12:49 [PATCH] kthread_worker: Initialize dynamically allocated spinlock properly for lockdep Andy Walls
2010-12-20 7:07 ` Yong Zhang
2010-12-20 9:28 ` Yong Zhang
2010-12-20 16:21 ` Tejun Heo
2010-12-21 1:54 ` Yong Zhang
2010-12-21 4:40 ` [V2 PATCH] kthread_work: Make lockdep happy Yong Zhang
2010-12-21 12:59 ` Tejun Heo [this message]
2010-12-21 13:25 ` Nicolas Mailhot
2010-12-21 16:07 ` Andy Walls
2010-12-22 0:39 ` Andy Walls
2010-12-22 3:12 ` Yong Zhang
2010-12-22 3:23 ` [V3 " Yong Zhang
2010-12-22 9:33 ` Tejun Heo
2010-12-20 17:16 ` [PATCH] kthread_worker: Initialize dynamically allocated spinlock properly for lockdep Andy Walls
2010-12-21 2:02 ` Yong Zhang
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