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io_uring: improve io_run_task_work()

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Since SQPOLL now uses TWA_SIGNAL_NO_IPI, there won't be task work items
without TIF_NOTIFY_SIGNAL. Simplify io_run_task_work() by removing
task->task_works check. Even though looks it doesn't cause extra cache
bouncing, it's still nice to not touch it an extra time when it might be
not cached.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/75d4f34b0c671075892821a409e28da6cb1d64fe.1655802465.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-06-21 10:09:00 +01:00 committed by Jens Axboe
parent 4a0fef6278
commit 625d38b3fd
1 changed files with 1 additions and 1 deletions
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2
io_uring/io_uring.h
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@ -203,7 +203,7 @@ static inline unsigned int io_sqring_entries(struct io_ring_ctx *ctx)
static inline bool io_run_task_work(void)
{
if (test_thread_flag(TIF_NOTIFY_SIGNAL) || task_work_pending(current)) {
if (test_thread_flag(TIF_NOTIFY_SIGNAL)) {
__set_current_state(TASK_RUNNING);
clear_notify_signal();
if (task_work_pending(current))