From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, [email protected]
Subject: [RFC v2 01/13] io_uring: rearrange defer list checks
Date: Tue, 3 Jan 2023 03:03:52 +0000 [thread overview]
Message-ID: <52e8192f6e36b5918371aa139a4f62a084757622.1672713341.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
There should be nothing in the ->work_llist for non DEFER_TASKRUN rings,
so we can skip flag checks and test the list emptiness directly. Also
move it out of io_run_local_work() for inlining.
Signed-off-by: Pavel Begunkov <[email protected]>
---
io_uring/io_uring.c | 3 ---
io_uring/io_uring.h | 2 +-
2 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 58ac13b69dc8..4f12619f9f21 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1338,9 +1338,6 @@ int io_run_local_work(struct io_ring_ctx *ctx)
bool locked;
int ret;
- if (llist_empty(&ctx->work_llist))
- return 0;
-
__set_current_state(TASK_RUNNING);
locked = mutex_trylock(&ctx->uring_lock);
ret = __io_run_local_work(ctx, &locked);
diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h
index e9f0d41ebb99..46c0f765a77a 100644
--- a/io_uring/io_uring.h
+++ b/io_uring/io_uring.h
@@ -274,7 +274,7 @@ static inline int io_run_task_work_ctx(struct io_ring_ctx *ctx)
int ret = 0;
int ret2;
- if (ctx->flags & IORING_SETUP_DEFER_TASKRUN)
+ if (!llist_empty(&ctx->work_llist))
ret = io_run_local_work(ctx);
/* want to run this after in case more is added */
--
2.38.1
next prev parent reply other threads:[~2023-01-03 3:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-03 3:03 [RFC v2 00/13] CQ waiting and wake up optimisations Pavel Begunkov
2023-01-03 3:03 ` Pavel Begunkov [this message]
2023-01-03 3:03 ` [RFC v2 02/13] io_uring: don't iterate cq wait fast path Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 03/13] io_uring: kill io_run_task_work_ctx Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 04/13] io_uring: move defer tw task checks Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 05/13] io_uring: parse check_cq out of wq waiting Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 06/13] io_uring: mimimise io_cqring_wait_schedule Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 07/13] io_uring: simplify io_has_work Pavel Begunkov
2023-01-03 3:03 ` [RFC v2 08/13] io_uring: set TASK_RUNNING right after schedule Pavel Begunkov
2023-01-03 3:04 ` [RFC v2 09/13] io_uring: separate wq for ring polling Pavel Begunkov
2023-01-04 18:08 ` Jens Axboe
2023-01-04 20:28 ` Pavel Begunkov
2023-01-04 20:34 ` Jens Axboe
2023-01-04 20:45 ` Pavel Begunkov
2023-01-04 20:53 ` Jens Axboe
2023-01-04 20:52 ` Jens Axboe
2023-01-03 3:04 ` [RFC v2 10/13] io_uring: add lazy poll_wq activation Pavel Begunkov
2023-01-03 3:04 ` [RFC v2 11/13] io_uring: wake up optimisations Pavel Begunkov
2023-01-03 3:04 ` [RFC v2 12/13] io_uring: waitqueue-less cq waiting Pavel Begunkov
2023-01-03 3:04 ` [RFC v2 13/13] io_uring: add io_req_local_work_add wake fast path Pavel Begunkov
2023-01-04 18:05 ` (subset) [RFC v2 00/13] CQ waiting and wake up optimisations Jens Axboe
2023-01-04 20:25 ` Pavel Begunkov
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