From: Ingo Molnar <mingo@elte.hu>
To: Li Zefan <lizf@cn.fujitsu.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] sched: partly revert "sched debug: remove NULL checking in print_cfs_rt_rq()"
Date: Sun, 11 Jan 2009 02:40:50 +0100 [thread overview]
Message-ID: <20090111014050.GM12885@elte.hu> (raw)
In-Reply-To: <49685193.6010302@cn.fujitsu.com>
* Li Zefan <lizf@cn.fujitsu.com> wrote:
> Impact: avoid accessing NULL tg.css->cgroup
>
> In commit 0a0db8f5c9d4bbb9bbfcc2b6cb6bce2d0ef4d73d, I removed checking
> NULL tg.css->cgroup, but I realized I was wrong when I found reading
> /proc/sched_debug can race with cgroup_create().
>
> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
> ---
> kernel/sched_debug.c | 21 +++++++++++++++++----
> 1 files changed, 17 insertions(+), 4 deletions(-)
applied to tip/sched/urgent, thanks!
Ingo
prev parent reply other threads:[~2009-01-11 1:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-10 7:43 Li Zefan
2009-01-11 1:40 ` Ingo Molnar [this message]
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