Commit 489b8006 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring/napi: refactor __io_napi_busy_loop() 



we don't need to set ->napi_prefer_busy_poll if we're not going to poll,
do the checks first and all polling preparation after.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2ad7ede8cc7905328fc62e8c3805fdb11635ae0b.1723039801.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent a69307a5

io_uring/napi.c

+4 −3
Original line number Diff line number Diff line
@@ -299,9 +299,10 @@ void __io_napi_adjust_timeout(struct io_ring_ctx *ctx, struct io_wait_queue *iow 
 */

void __io_napi_busy_loop(struct io_ring_ctx *ctx, struct io_wait_queue *iowq)

{

	iowq->napi_prefer_busy_poll = READ_ONCE(ctx->napi_prefer_busy_poll);

	if (ctx->flags & IORING_SETUP_SQPOLL)

		return;



	if (!(ctx->flags & IORING_SETUP_SQPOLL))

	iowq->napi_prefer_busy_poll = READ_ONCE(ctx->napi_prefer_busy_poll);

	io_napi_blocking_busy_loop(ctx, iowq);

}