lkml.org 
[lkml]   [2022]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] sched/schedutil: Fix deadlock between cpuset and cpu hotplug when using schedutil
Hello,

On Thu, Jul 28, 2022 at 12:01:35AM +0200, Peter Zijlstra wrote:
> On Tue, Jul 12, 2022 at 06:13:46AM -1000, Tejun Heo wrote:
>
> > But now we're failing user-initiated operations randomly. I have a hard time
> > seeing that as an acceptable solution.
>
> There (sadly) is precedent for that; grep for "cpu_hotplug_disable".

Yeah, there's another one in cpu cgroup controller attach path. We should
get better at not doing these. Low frequency arbitrary failures are really
difficult to handle reliably downstream.

Thanks.

--
tejun

\
 
 \ /
  Last update: 2022-07-28 00:08    [W:0.063 / U:0.556 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site