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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-03-17 02:03:39 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-16 20:26:32 -0600 |
| commit | 0f84747177b962c32243a57cb454193bdba4fe8d (patch) | |
| tree | 2590b62771b8ce15c8b31cce78f59d68f5f98e55 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | b91ef1872869d99cd42e908eb9754b81115c2c05 (diff) | |
io_uring: remove extra barrier for non-sqpoll iopoll
smp_mb() in io_cqring_ev_posted_iopoll() is only there because of
waitqueue_active(). However, non-SQPOLL IOPOLL ring doesn't wake the CQ
and so the barrier there is useless. Kill it, it's usually pretty
expensive.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d72e8ef6f7a3f6a72e18fad8409f7d47afc8da7d.1647481208.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions