[PATCH 1/2] io_uring: micro optimization of __io_sq_thread() condition

[Olivier Langlois <olivier@trillion01.com>]

reverse the order of the element evaluation in an if statement.

for many users that are not using iopoll, the iopoll_list will always
evaluate to false after having made a memory access whereas to_submit is
very likely already loaded in a register.

Signed-off-by: Olivier Langlois <olivier@trillion01.com>
---
 io_uring/sqpoll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
index b3722e5275e7..cc4a25136030 100644
--- a/io_uring/sqpoll.c
+++ b/io_uring/sqpoll.c
@@ -176,7 +176,7 @@ static int __io_sq_thread(struct io_ring_ctx *ctx, bool cap_entries)
 	if (cap_entries && to_submit > IORING_SQPOLL_CAP_ENTRIES_VALUE)
 		to_submit = IORING_SQPOLL_CAP_ENTRIES_VALUE;
 
-	if (!wq_list_empty(&ctx->iopoll_list) || to_submit) {
+	if (to_submit || !wq_list_empty(&ctx->iopoll_list)) {
 		const struct cred *creds = NULL;
 
 		if (ctx->sq_creds != current_cred())
-- 
2.45.2