[PATCH v1 0/3] cgroup/rstat: global cgroup_rstat_lock changes

[Jesper Dangaard Brouer]

This patchset is focused on the global cgroup_rstat_lock.

 Patch-1: Adds tracepoints to improve measuring lock behavior.
 Patch-2: Converts the global lock into a mutex.
 Patch-3: Limits userspace triggered pressure on the lock.

Background in discussion thread [1].
 [1] https://lore.kernel.org/all/ac4cf07f-52dd-454f-b897-2a4b3796a4d9@xxxxxxxxxx/

---

Jesper Dangaard Brouer (3):
      cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints
      cgroup/rstat: convert cgroup_rstat_lock back to mutex
      cgroup/rstat: introduce ratelimited rstat flushing


 block/blk-cgroup.c            |   2 +-
 include/linux/cgroup-defs.h   |   1 +
 include/linux/cgroup.h        |   5 +-
 include/trace/events/cgroup.h |  48 +++++++++++++++
 kernel/cgroup/rstat.c         | 111 ++++++++++++++++++++++++++++++----
 mm/memcontrol.c               |   1 +
 6 files changed, 153 insertions(+), 15 deletions(-)

--