lkml.org 
[lkml]   [2020]   [Dec]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 00/10] workqueue: break affinity initiatively
On Tue, Dec 15, 2020 at 3:50 PM Peter Zijlstra <peterz@infradead.org> wrote:
>
> On Tue, Dec 15, 2020 at 01:44:53PM +0800, Lai Jiangshan wrote:
> > I don't know how the scheduler distinguishes all these
> > different cases under the "new assumption".
>
> The special case is:
>
> (p->flags & PF_KTHREAD) && p->nr_cpus_allowed == 1
>
>

So unbound per-node workers can possibly match this test. So there is code
needed to handle for unbound workers/pools which is done by this patchset.

Is this the code of is_per_cpu_kthread()? I think I should have also
used this function in workqueue and don't break affinity for unbound
workers have more than 1 cpu.

\
 
 \ /
  Last update: 2020-12-15 09:16    [W:0.060 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site