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| author |   Oleg Nesterov <oleg@redhat.com> | 2023-08-24 16:32:01 +0200 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-10-04 10:41:56 -0700 |
| commit | d639cf4abb4d171ab2456904da5668c42b5c1937 (patch) | |
| tree | 4f4d1c2c495b08807ddbe2ee0dc583e3346234fe /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | introduce __next_thread(), fix next_tid() vs exec() race (diff) | |
| download | wireguard-linux-d639cf4abb4d171ab2456904da5668c42b5c1937.tar.xz wireguard-linux-d639cf4abb4d171ab2456904da5668c42b5c1937.zip | |
change next_thread() to use __next_thread() ?: group_leader
This relies on fact that group leader is always the 1st entry in the
signal->thread_head list.
With or without this change, if the lockless next_thread(last_thread)
races with exec it can return the old or the new leader.
We are almost ready to kill task->thread_group, after this change its
only user is thread_group_empty().
Link: https://lkml.kernel.org/r/20230824143201.GB31222@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions