[v6 0/4] cgroup-aware OOM killer

[Roman Gushchin <guro@fb.com>]

This patchset makes the OOM killer cgroup-aware.

v6:
  - Renamed oom_control.chosen to oom_control.chosen_task
  - Renamed oom_kill_all_tasks to oom_kill_all
  - Per-node NR_SLAB_UNRECLAIMABLE accounting
  - Several minor fixes and cleanups
  - Docs updated

v5:
  - Rebased on top of Michal Hocko's patches, which have changed the
    way how OOM victims becoming an access to the memory
    reserves. Dropped corresponding part of this patchset
  - Separated the oom_kill_process() splitting into a standalone commit
  - Added debug output (suggested by David Rientjes)
  - Some minor fixes

v4:
  - Reworked per-cgroup oom_score_adj into oom_priority
    (based on ideas by David Rientjes)
  - Tasks with oom_score_adj -1000 are never selected if
    oom_kill_all_tasks is not set
  - Memcg victim selection code is reworked, and
    synchronization is based on finding tasks with OOM victim marker,
    rather then on global counter
  - Debug output is dropped
  - Refactored TIF_MEMDIE usage

v3:
  - Merged commits 1-4 into 6
  - Separated oom_score_adj logic and debug output into separate commits
  - Fixed swap accounting

v2:
  - Reworked victim selection based on feedback
    from Michal Hocko, Vladimir Davydov and Johannes Weiner
  - "Kill all tasks" is now an opt-in option, by default
    only one process will be killed
  - Added per-cgroup oom_score_adj
  - Refined oom score calculations, suggested by Vladimir Davydov
  - Converted to a patchset

v1:
  https://lkml.org/lkml/2017/5/18/969


Roman Gushchin (4):
  mm, oom: refactor the oom_kill_process() function
  mm, oom: cgroup-aware OOM killer
  mm, oom: introduce oom_priority for memory cgroups
  mm, oom, docs: describe the cgroup-aware OOM killer

 Documentation/cgroup-v2.txt |  62 ++++++++++
 include/linux/memcontrol.h  |  36 ++++++
 include/linux/oom.h         |  12 +-
 mm/memcontrol.c             | 290 ++++++++++++++++++++++++++++++++++++++++++++
 mm/oom_kill.c               | 209 ++++++++++++++++++++-----------
 5 files changed, 539 insertions(+), 70 deletions(-)

-- 
2.13.5