diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-10-19 20:31:26 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-19 17:09:34 -0600 |
| commit | bc369921d6708542eb93da33478762f1162a5805 (patch) | |
| tree | f9ce142cfbdd5091d546acfcc872682b330e6d05 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 14cfbb7a7856f190035f8e53045bdbfa648fae41 (diff) | |
io-wq: max_worker fixes
First, fix nr_workers checks against max_workers, with max_worker
registration, it may pretty easily happen that nr_workers > max_workers.
Also, synchronise writing to acct->max_worker with wqe->lock. It's not
an actual problem, but as we don't care about io_wqe_create_worker(),
it's better than WRITE_ONCE()/READ_ONCE().
Fixes: 2e480058ddc2 ("io-wq: provide a way to limit max number of workers")
Reported-by: Beld Zhang <beldzhang@gmail.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/11f90e6b49410b7d1a88f5d04fb8d95bb86b8cf3.1634671835.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions