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: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
io_uring/napi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/io_uring/napi.c b/io_uring/napi.c
index 4fd6bb331e1e..a670f49e30ef 100644
--- a/io_uring/napi.c
+++ b/io_uring/napi.c
@@ -301,10 +301,11 @@ 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) || !ctx->napi_enabled)
+ return;
- if (!(ctx->flags & IORING_SETUP_SQPOLL) && ctx->napi_enabled)
- io_napi_blocking_busy_loop(ctx, iowq);
+ iowq->napi_prefer_busy_poll = READ_ONCE(ctx->napi_prefer_busy_poll);
+ io_napi_blocking_busy_loop(ctx, iowq);
}
/*
--
2.45.2
