Messages in this thread | | | From | Chengming Zhou <> | Subject | [PATCH v2 0/6] perf/core: Fixes and cleanup for cgroup events | Date | Tue, 22 Mar 2022 20:08:28 +0800 |
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Hi,
This patchset starts from the v1 RFC patch[1] that try to fix a race problem between perf_cgroup_switch() and perf_cgroup_attach(), then change the usage of perf_cgroup_from_task() to use stable cpuctx->cgrp in perf_cgroup active time start and stop for the similar reason. Then remove some obselete comments and some code cleanup.
[1] https://lore.kernel.org/lkml/20220308135948.55336-1-zhouchengming@bytedance.com/
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
Chengming Zhou (6): perf/core: Fix incosistency between cgroup sched_out and sched_in perf/core: Introduce percpu perf_cgroup perf/core: Don't pass task around when ctx sched in perf/core: Use stable cpuctx->cgrp when update perf cgroup time perf/core: Always set cpuctx cgrp when enable cgroup event perf/core: Don't need event_filter_match when merge_sched_in()
kernel/events/core.c | 218 ++++++++++++------------------------------- 1 file changed, 60 insertions(+), 158 deletions(-)
-- 2.20.1
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