diff options
| author | Rik van Riel <riel@redhat.com> | 2014-08-15 16:05:36 -0400 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-05-02 21:45:13 +0200 |
| commit | fcfdd3e4ef6cc689e8e4e08b0826212f7ebd036c (patch) | |
| tree | e58bf20a49bfafaa9da29f1d1fcb903e5113a2af /include/linux/kernel.h | |
| parent | 3b42fe186ab6692247f95389bd3944c6c587a5e0 (diff) | |
exit: Always reap resource stats in __exit_signal()
Oleg pointed out that wait_task_zombie adds a task's usage statistics
to the parent's signal struct, but the task's own signal struct should
also propagate the statistics at exit time.
This allows thread_group_cputime(reaped_zombie) to get the statistics
after __unhash_process() has made the task invisible to for_each_thread,
but before the thread has actually been rcu freed, making sure no
non-monotonic results are returned inside that window.
Change-Id: I2a66eb570cecd344323e4f842fd89b22f4b6f001
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Guillaume Morin <guillaume@morinfr.org>
Cc: Ionut Alexa <ionut.m.alexa@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Michal Schmidt <mschmidt@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: umgwanakikbuti@gmail.com
Cc: fweisbec@gmail.com
Cc: srao@redhat.com
Cc: lwoodman@redhat.com
Cc: atheurer@redhat.com
Link: http://lkml.kernel.org/r/1408133138-22048-2-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/kernel.h')
0 files changed, 0 insertions, 0 deletions