| commit | 2b85edfc0c90efc68dea3d665bb4111bf0694e05 | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Sat Dec 28 14:13:03 2019 +0300 |
| committer | Jens Axboe <axboe@kernel.dk> | Mon Jan 20 17:04:02 2020 -0700 |
| tree | 9e5cb950fa5d4fbafd3981e569ef3d9c856cf127 | |
| parent | 4e5ef02317b12e2ed3d604281ffb6b75261f7612 [diff] |
io_uring: batch getting pcpu references percpu_ref_tryget() has its own overhead. Instead getting a reference for each request, grab a bunch once per io_submit_sqes(). ~5% throughput boost for a "submit and wait 128 nops" benchmark. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> __io_req_free_empty() -> __io_req_do_free() Signed-off-by: Jens Axboe <axboe@kernel.dk>