Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items
Date	2016-02-10 17:00 +0100
Message-ID	<r0Flq-45R-37@gated-at.bofh.it> (permalink)
References	<r0pJD-2qT-1@gated-at.bofh.it> <r0y0y-82P-5@gated-at.bofh.it>
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Hello, Jiri.

On Wed, Feb 10, 2016 at 09:01:38AM +0100, Jiri Slaby wrote:
> Thanks all for sorting the issue out. Now it remains to decide what
> should go to stable. Given only 0001 is marked as "Fixes", is that enough?

I think so.  The other two are primarily for debugging anyway.

> And what about the vmstat fix:
> commit 176bed1de5bf977938cad26551969eca8f0883b1
> Author: Linus Torvalds <torvalds@linux-foundation.org>
> Date:   Thu Oct 15 13:01:50 2015 -0700
> 
>     vmstat: explicitly schedule per-cpu work on the CPU we need it to run on
> 
> ? It should fix better than what 0001 is reverting AFAIU, right?

Yes, definitely.  Didn't know that one wasn't tagged for stable.

Thanks.

-- 
tejun

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[PATCHSET] workqueue: break local execution guarantee of unbound work items Tejun Heo <tj@kernel.org> - 2016-02-10 00:20 +0100
  [PATCH 1/3] Revert "workqueue: make sure delayed work run in local cpu" Tejun Heo <tj@kernel.org> - 2016-02-10 00:20 +0100
    Re: [PATCH 1/3] Revert "workqueue: make sure delayed work run in  local cpu" Michal Hocko <mhocko@kernel.org> - 2016-02-15 14:20 +0100
  [PATCH 3/3] workqueue: implement "workqueue.debug_force_rr_cpu" debug feature Tejun Heo <tj@kernel.org> - 2016-02-10 00:20 +0100
    Re: [PATCH 3/3] workqueue: implement "workqueue.debug_force_rr_cpu"  debug feature Michal Hocko <mhocko@kernel.org> - 2016-02-15 14:20 +0100
  [PATCH 2/3] workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs Tejun Heo <tj@kernel.org> - 2016-02-10 00:20 +0100
  Re: [PATCHSET] workqueue: break local execution guarantee of unbound  work items Linus Torvalds <torvalds@linux-foundation.org> - 2016-02-10 02:00 +0100
  Re: [PATCHSET] workqueue: break local execution guarantee of unbound  work items Jiri Slaby <jslaby@suse.cz> - 2016-02-10 09:10 +0100
    Re: [PATCHSET] workqueue: break local execution guarantee of unbound  work items Tejun Heo <tj@kernel.org> - 2016-02-10 17:00 +0100

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