[v3 0/6] cgroup-aware OOM killer

[Roman Gushchin <guro@fb.com>]

This patchset makes the OOM killer cgroup-aware.

Patch 1 causes out_of_memory() look at the oom_victim counter
      	to decide if a new victim is required.

Patch 2 is main patch which implements cgroup-aware OOM killer.

Patch 3 adds some debug output, which can be refined later.

Patch 4 introduces per-cgroup oom_score_adj knob.

Patch 5 fixes a problem with too many processes receiving an
      	access to the memory reserves.

Patch 6 is docs update.

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

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

v3:
  - Fixed swap accounting
  - Switched to use oom_victims counter to prevent unnecessary kills
  - TIF_MEMDIE is set only when necessary
  - Moved all oom victim killing code into oom_kill.c
  - Merged commits 1-4 into 6
  - Separated oom_score_adj logic into a separate commit 4
  - Separated debug output into a separate commit 3

Roman Gushchin (6):
  mm, oom: use oom_victims counter to synchronize oom victim selection
  mm, oom: cgroup-aware OOM killer
  mm, oom: cgroup-aware OOM killer debug info
  mm, oom: introduce oom_score_adj for memory cgroups
  mm, oom: don't mark all oom victims tasks with TIF_MEMDIE
  mm,oom,docs: describe the cgroup-aware OOM killer

 Documentation/cgroup-v2.txt |  44 ++++++++++
 include/linux/memcontrol.h  |  23 +++++
 include/linux/oom.h         |   3 +
 kernel/exit.c               |   2 +-
 mm/memcontrol.c             | 209 ++++++++++++++++++++++++++++++++++++++++++++
 mm/oom_kill.c               | 202 ++++++++++++++++++++++++++++--------------
 6 files changed, 416 insertions(+), 67 deletions(-)

-- 
2.7.4

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