Re: [PATCH -v6 2/5] Migrate shutdown/reboot to boot cpu.

From: Ingo Molnar
Date: Thu Apr 25 2013 - 03:34:48 EST



* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Thu, 25 Apr 2013 08:57:04 +0200 Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> > > PF_THREAD_BOUND was removed/replaced in linux-next's a9ab775bc
> > > ("workqueue: directly restore CPU affinity of workers from CPU_ONLINE")
> >
> > I don't see PF_THREAD_BOUND being removed by commit a9ab775bc. Did you
> > mean some other commit?
>
> commit 14a40ffccd6163bbcd1d6f32b28a88ffe6149fc6
> Author: Tejun Heo <tj@xxxxxxxxxx>
> Date: Tue Mar 19 13:45:20 2013 -0700
>
> sched: replace PF_THREAD_BOUND with PF_NO_SETAFFINITY

I don't think much action is needed: whenever someone integrates the
workqueue tree with these reboot changes, or the workqueue changes hit
upstream, a s/PF_THREAD_BOUND/PF_NO_SETAFFINITY should do the trick,
right?

Btw., if that's true then the workqueue tree should probably grow this
helper:

#define PF_THREAD_BOUND PF_NO_SETAFFINITY

migration/backport helper, which can be removed in v3.11 or so.

Thanks,

Ingo
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