mbox series

[0/3] cgroup: Iterate tasks that did not finish do_exit()

Message ID 20200117151533.12381-1-mkoutny@suse.com
Headers show
Series cgroup: Iterate tasks that did not finish do_exit() | expand

Message

Michal Koutný Jan. 17, 2020, 3:15 p.m. UTC 
Hi,
I was looking into the issue and came up with an alternative solution that
changes task iteration to be consistent with cgroup_is_populated() check and
moving the responsibility to check PF_EXITING on the consumers of iterator API.

I haven't check your approach thoroughly, however, it appears to me it
complicates (already non-trivial) cgroup destruction path. I ran your selftest
on the iterators approach and it proved working.

Michal Koutný (2):
  cgroup: Unify css_set task lists
  cgroup: Iterate tasks that did not finish do_exit()

Suren Baghdasaryan (1):
  kselftest/cgroup: add cgroup destruction test

 include/linux/cgroup-defs.h                |  15 ++-
 include/linux/cgroup.h                     |   4 +-
 kernel/cgroup/cgroup.c                     |  86 ++++++++--------
 kernel/cgroup/debug.c                      |  16 ++-
 tools/testing/selftests/cgroup/test_core.c | 113 +++++++++++++++++++++
 5 files changed, 176 insertions(+), 58 deletions(-)