lkml.org 
[lkml]   [2021]   [Jan]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/8] sched: Fix hot-unplug regressions
On Sat, Jan 16, 2021 at 12:30:33PM +0100, Peter Zijlstra wrote:
> Hi,
>
> These patches (no longer 4), seems to fix all the hotplug regressions as per
> nearly a 100 18*SRCU-P runs over-night.
>
> I did clean up the patches, so possibly I wrecked it again. I've started new
> runs and will again leave them running over-night.

Hurph... I've got one splat from this version, one I've not seen before:

[ 68.712848] Dying CPU not properly vacated!
...
[ 68.744448] CPU1 enqueued tasks (2 total):
[ 68.745018] pid: 14, name: rcu_preempt
[ 68.745557] pid: 18, name: migration/1

Paul, rcu_preempt, is from rcu_spawn_gp_kthread(), right? Afaict that
doesn't even have affinity.. /me wonders HTH that ended up on the
runqueue so late.

\
 
 \ /
  Last update: 2021-01-16 18:17    [W:0.100 / U:2.616 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site