From: Prateek Sood <prsood@codeaurora.org>
To: Peter Zijlstra <peterz@infradead.org>, Tejun Heo <tj@kernel.org>
Cc: avagin@gmail.com, mingo@kernel.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, sramana@codeaurora.org
Subject: Re: [PATCH] cgroup/cpuset: fix circular locking dependency
Date: Fri, 8 Dec 2017 15:10:05 +0530 [thread overview]
Message-ID: <4e63b5e9-1696-910f-16ac-4d4d7eb98725@codeaurora.org> (raw)
In-Reply-To: <20171204230117.GF20227@worktop.programming.kicks-ass.net>
On 12/05/2017 04:31 AM, Peter Zijlstra wrote:
> On Mon, Dec 04, 2017 at 02:58:25PM -0800, Tejun Heo wrote:
>> Hello, again.
>>
>> On Mon, Dec 04, 2017 at 12:22:19PM -0800, Tejun Heo wrote:
>>> Hello,
>>>
>>> On Mon, Dec 04, 2017 at 10:44:49AM +0530, Prateek Sood wrote:
>>>> Any feedback/suggestion for this patch?
>>>
>>> Sorry about the delay. I'm a bit worried because it feels like we're
>>> chasing a squirrel. I'll think through the recent changes and this
>>> one and get back to you.
>>
>> Can you please take a look at the following pending commit?
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git/commit/?h=for-4.15-fixes&id=e8b3f8db7aad99fcc5234fc5b89984ff6620de3d
>>
>> AFAICS, this should remove the circular dependency you originally
>> reported. I'll revert the two cpuset commits for now.
>
> So I liked his patches in that we would be able to go back to
> synchronous sched_domain building.
>
https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git/commit/?h=for-4.15-fixes&id=e8b3f8db7aad99fcc5234fc5b89984ff6620de3d
This will fix the original circular locking dependency issue.
I will let you both (Peter & TJ) to decide on which one to
pick.
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation
Center, Inc., is a member of Code Aurora Forum, a Linux Foundation
Collaborative Project
next prev parent reply other threads:[~2017-12-08 9:43 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-28 1:22 cgroup/for-next: WARNING: possible circular locking dependency detected in cpuset_write_resmask Andrei Vagin
2017-11-28 11:35 ` [PATCH] cgroup/cpuset: fix circular locking dependency Prateek Sood
2017-12-04 5:14 ` Prateek Sood
2017-12-04 5:14 ` Prateek Sood
2017-12-04 20:22 ` Tejun Heo
2017-12-04 20:22 ` Tejun Heo
2017-12-04 22:58 ` Tejun Heo
2017-12-04 23:01 ` Peter Zijlstra
2017-12-04 23:01 ` Peter Zijlstra
2017-12-08 9:40 ` Prateek Sood [this message]
2017-12-08 11:45 ` Prateek Sood
2017-12-08 11:45 ` Prateek Sood
2017-12-11 15:32 ` Tejun Heo
2017-12-11 15:32 ` Tejun Heo
2017-12-13 14:28 ` Prateek Sood
2017-12-13 15:40 ` Tejun Heo
2017-12-15 8:54 ` Prateek Sood
2017-12-15 8:54 ` Prateek Sood
2017-12-15 13:22 ` Tejun Heo
2017-12-15 19:06 ` Prateek Sood
2017-12-19 7:26 ` [PATCH] cgroup: Fix deadlock in cpu hotplug path Prateek Sood
2017-12-19 7:26 ` Prateek Sood
2017-12-19 13:39 ` Tejun Heo
2017-12-11 15:20 ` [PATCH] cgroup/cpuset: fix circular locking dependency Tejun Heo
2017-12-11 15:20 ` Tejun Heo
2017-12-13 7:50 ` Prateek Sood
2017-12-13 7:50 ` Prateek Sood
2017-12-13 16:06 ` Tejun Heo
2017-12-15 19:04 ` Prateek Sood
2017-12-15 19:04 ` Prateek Sood
2017-12-28 20:37 ` Prateek Sood
2017-12-28 20:37 ` Prateek Sood
2018-01-02 16:16 ` Tejun Heo
2018-01-02 17:44 ` Paul E. McKenney
2018-01-02 17:44 ` Paul E. McKenney
2018-01-02 18:01 ` Paul E. McKenney
2018-01-08 12:28 ` Tejun Heo
2018-01-08 12:28 ` Tejun Heo
2018-01-08 13:47 ` [PATCH wq/for-4.16 1/2] workqueue: separate out init_rescuer() Tejun Heo
2018-01-08 13:47 ` Tejun Heo
2018-01-08 13:47 ` [PATCH wq/for-4.16 2/2] workqueue: allow WQ_MEM_RECLAIM on early init workqueues Tejun Heo
2018-01-08 13:47 ` Tejun Heo
2018-01-08 22:52 ` [PATCH] cgroup/cpuset: fix circular locking dependency Paul E. McKenney
2018-01-08 22:52 ` Paul E. McKenney
2018-01-09 0:31 ` Paul E. McKenney
2018-01-09 3:42 ` Tejun Heo
2018-01-09 3:42 ` Tejun Heo
2018-01-09 4:20 ` Paul E. McKenney
2018-01-09 13:44 ` Tejun Heo
2018-01-09 15:21 ` Paul E. McKenney
2018-01-09 15:21 ` Paul E. McKenney
2018-01-09 15:37 ` Tejun Heo
2018-01-09 16:00 ` Paul E. McKenney
2018-01-09 16:00 ` Paul E. McKenney
2018-01-10 20:08 ` Paul E. McKenney
2018-01-10 21:41 ` Tejun Heo
2018-01-10 21:41 ` Tejun Heo
2018-01-10 22:10 ` Paul E. McKenney
2018-01-10 22:10 ` Paul E. McKenney
2018-01-15 12:02 ` Prateek Sood
2018-01-15 12:02 ` Prateek Sood
2018-01-16 16:27 ` Tejun Heo
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