From 7b235dd82ad32c1626e51303d94ec5ef4d7bc994 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Mon, 9 Jan 2023 14:46:08 +0000 Subject: io_uring: separate wq for ring polling Don't use ->cq_wait for ring polling but add a separate wait queue for it. We need it for following patches. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/dea0be0bf990503443c5c6c337fc66824af7d590.1673274244.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/io_uring.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'io_uring/io_uring.h') diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index b5975e353aa1..c75bbb94703c 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -220,9 +220,18 @@ static inline void io_commit_cqring(struct io_ring_ctx *ctx) smp_store_release(&ctx->rings->cq.tail, ctx->cached_cq_tail); } +static inline void io_poll_wq_wake(struct io_ring_ctx *ctx) +{ + if (waitqueue_active(&ctx->poll_wq)) + __wake_up(&ctx->poll_wq, TASK_NORMAL, 0, + poll_to_key(EPOLL_URING_WAKE | EPOLLIN)); +} + /* requires smb_mb() prior, see wq_has_sleeper() */ static inline void __io_cqring_wake(struct io_ring_ctx *ctx) { + io_poll_wq_wake(ctx); + /* * Trigger waitqueue handler on all waiters on our waitqueue. This * won't necessarily wake up all the tasks, io_should_wake() will make -- cgit v1.2.3