lkml.org 
[lkml]   [2022]   [Mar]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v4 0/4] perf/core: Fixes for cgroup events
Date
Hi,

This patchset mainly fix a race problem between cgroup_migrate_execute()
and perf_cgroup_sched_out/in().

v4:
- delete patch 3 in v3 that remove event_filter_match() in
merge_sched_in(), which is wrong since the hybrid system
implemented PMU specific filter_match callback. Thanks Kan.

v3:
- put two fix patches together in patch 4
- delete percpu cpu_perf_cgroup, just use cpuctx->cgrp to compare
- reorganize these patches' order

v2:
- split into two patches to fix the race problem for easier review
- use cpuctx->cgrp when start ctx time and delete unused task argument
- use cpuctx->cgrp when update ctx time from cgroup perf_event
- always set cpuctx->cgrp when the first cgroup event enabled
- remove obselete comments

v1:
- https://lore.kernel.org/lkml/20220308135948.55336-1-zhouchengming@bytedance.com/


Chengming Zhou (4):
perf/core: Don't pass task around when ctx sched in
perf/core: Use perf_cgroup_info->active to check if cgroup is active
perf/core: Fix perf_cgroup_switch()
perf/core: Always set cpuctx cgrp when enable cgroup event

kernel/events/core.c | 209 +++++++++++--------------------------------
1 file changed, 52 insertions(+), 157 deletions(-)

--
2.35.1

\
 
 \ /
  Last update: 2022-03-29 17:46    [W:0.412 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site