Messages in this thread | | | Date | Thu, 2 Feb 2017 13:47:32 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH REPOST 2/2] cgroup, perf_event: make perf_event controller work on cgroup2 hierarchy |
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On Sun, Jan 29, 2017 at 02:35:20PM -0500, Tejun Heo wrote: > perf_event is a utility controller whose primary role is identifying > cgroup membership to filter perf events; however, because it also > tracks some per-css state, it can't be replaced by pure cgroup > membership test. Mark the controller as implicitly enabled on the > default hierarchy so that perf events can always be filtered based on > cgroup v2 path as long as the controller is not mounted on a legacy > hierarchy. > > "perf record" is updated accordingly so that it searches for both v1 > and v2 hierarchies. A v1 hierarchy is used if perf_event is mounted > on it; otherwise, it uses the v2 hierarchy. > > v2: Doc updated to reflect more flexible rebinding behavior. > > Signed-off-by: Tejun Heo <tj@kernel.org> > Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Applied to cgroup/for-4.11.
Thanks.
-- tejun
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