Messages in this thread | | | From | Tejun Heo <> | Subject | [PATCHSET] perf, cgroup: implement hierarchy support for perf_event controller | Date | Mon, 8 Apr 2013 19:23:30 -0700 |
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perf_event cgroup controller is one of the remaining few with broken hierarchy support. It turns out it's pretty easy to implement - the only thing necessary is making perf_cgroup_match() return %true also when the cgroup of the current task is a descendant of the event's cgroup. This patchset implements cgroup_is_descendant() and uses it to implement hierarchy support in perf_event controller.
This patchset contains the following three patches.
0001-cgroup-make-sure-parent-won-t-be-destroyed-before-it.patch 0002-cgroup-implement-cgroup_is_descendant.patch 0003-perf-make-perf_event-cgroup-hierarchical.patch
The patches are also available in the following git branch, which is based on top of cgroup/for-3.10. It's currently based on top of cgroup/for-3.10 as the first patch causes non-trivial conflict with it otherwise, which is not difficult to resolve but still nice to avoid anyway.
Li, Michal, I picked the first two patches from Li's memcg patchset. Can we push the first two through cgroup/for-3.10 and put the rest in -mm?
Ingo, how should these be routed?
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git perf_event-hierarchy-support
diffstat follows, thanks.
include/linux/cgroup.h | 1 + kernel/cgroup.c | 30 ++++++++++++++++++++++++++++++ kernel/events/core.c | 24 ++++++++++++++++-------- 3 files changed, 47 insertions(+), 8 deletions(-)
-- tejun
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