[PATCHSET] perf, cgroup: implement hierarchy support for perf_event controller

From: Tejun Heo
Date: Mon Apr 08 2013 - 22:23:45 EST

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.


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

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

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(-)

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/