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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-01-09 17:46:11 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-30 01:17:40 +0300 |
| commit | 130bd686d9be918e4cc8c03abf5794ba2d860502 (patch) | |
| tree | 7db8b4728da7507c82b246711843384ba3b3b0b9 /tools/perf/scripts/python/failed-syscalls-by-pid.py | |
| parent | 3181e22fb79910c7071e84a43af93ac89e8a7106 (diff) | |
| download | linux-130bd686d9be918e4cc8c03abf5794ba2d860502.tar.xz | |
io_uring: waitqueue-less cq waiting
With DEFER_TASKRUN only ctx->submitter_task might be waiting for CQEs,
we can use this to optimise io_cqring_wait(). Replace ->cq_wait
waitqueue with waking the task directly.
It works but misses an important optimisation covered by the following
patch, so this patch without follow ups might hurt performance.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/103d174d35d919d4cb0922d8a9c93a8f0c35f74a.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/failed-syscalls-by-pid.py')
0 files changed, 0 insertions, 0 deletions