From: Matt Helsley <matthltc@us.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
"containers@lists.osdl.org" <containers@lists.osdl.org>,
Paul Menage <menage@google.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 3/5] sched: Fix an RCU warning in print_task()
Date: Thu, 22 Apr 2010 14:12:12 -0700 [thread overview]
Message-ID: <20100422211212.GA32490@count0.beaverton.ibm.com> (raw)
In-Reply-To: <1271931604.1776.337.camel@laptop>
On Thu, Apr 22, 2010 at 12:20:04PM +0200, Peter Zijlstra wrote:
<snip>
> You can also pin a cgroup by holding whatever locks are held in the
> ->attach method. But the RCU annotation doesn't know (nor reasonably can
> know about that).
For my future reference, what's the right way to "fix" these
situations with the RCU annotations? (I think your response re: Li's
freezer patch was correct and illustrates the problem I'm referring to.)
Cheers,
-Matt Helsley
next prev parent reply other threads:[~2010-04-22 21:12 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 9:29 [PATCH 1/5] cgroup: Fix an RCU warning in cgroup_path() Li Zefan
2010-04-22 9:30 ` [PATCH 2/5] cgroup: Fix an RCU warning in alloc_css_id() Li Zefan
2010-04-22 19:55 ` Paul E. McKenney
2010-04-22 9:30 ` [PATCH 3/5] sched: Fix an RCU warning in print_task() Li Zefan
2010-04-22 10:20 ` Peter Zijlstra
2010-04-22 21:12 ` Matt Helsley [this message]
2010-04-22 22:05 ` Paul E. McKenney
2010-04-22 19:56 ` Paul E. McKenney
2010-04-22 9:31 ` [PATCH 4/5] freezer cgroup: Fix an RCU warning in cgroup_freezing_or_frozen() Li Zefan
2010-04-22 12:27 ` Peter Zijlstra
2010-04-22 19:59 ` Paul E. McKenney
2010-04-22 20:08 ` Peter Zijlstra
2010-04-23 1:05 ` Li Zefan
2010-04-23 6:47 ` Peter Zijlstra
2010-04-22 9:32 ` [PATCH 5/5] blk-cgroup: Fix an RCU warning in blkiocg_create() Li Zefan
2010-04-22 14:31 ` Vivek Goyal
2010-04-22 19:57 ` Paul E. McKenney
2010-05-07 6:56 ` Li Zefan
2010-05-07 6:57 ` Jens Axboe
2010-05-07 14:55 ` Paul E. McKenney
2010-04-22 19:55 ` [PATCH 1/5] cgroup: Fix an RCU warning in cgroup_path() Paul E. McKenney
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