linux

iv/linux

Author SHA1 Message Date

Author	SHA1	Message	Date
Jens Axboe	ebdfefc09c	io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used If we setup the ring with SQPOLL, then that polling thread has its own io-wq setup. This means that if the application uses IORING_REGISTER_IOWQ_AFF to set the io-wq affinity, we should not be setting it for the invoking task, but rather the sqpoll task. Add an sqpoll helper that parks the thread and updates the affinity, and use that one if we're using SQPOLL. Fixes: `fe76421d1d` ("io_uring: allow user configurable IO thread CPU affinity") Cc: stable@vger.kernel.org # 5.10+ Link: https://github.com/axboe/liburing/discussions/884 Signed-off-by: Jens Axboe <axboe@kernel.dk>	2023-08-16 13:40:28 -06:00
Quanfa Fu	88b80534f6	io_uring: make io_sqpoll_wait_sq return void Change the return type to void since it always return 0, and no need to do the checking in syscall io_uring_enter. Signed-off-by: Quanfa Fu <quanfafu@gmail.com> Link: https://lore.kernel.org/r/20230115071519.554282-1-quanfafu@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>	2023-01-29 15:17:40 -07:00
Jens Axboe	17437f3114	io_uring: move SQPOLL related handling into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>	2022-07-24 18:39:12 -06:00

Jens Axboe

ebdfefc09c

io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used

If we setup the ring with SQPOLL, then that polling thread has its
own io-wq setup. This means that if the application uses
IORING_REGISTER_IOWQ_AFF to set the io-wq affinity, we should not be
setting it for the invoking task, but rather the sqpoll task.

Add an sqpoll helper that parks the thread and updates the affinity,
and use that one if we're using SQPOLL.

Fixes: fe76421d1d ("io_uring: allow user configurable IO thread CPU affinity")
Cc: stable@vger.kernel.org # 5.10+
Link: https://github.com/axboe/liburing/discussions/884
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2023-08-16 13:40:28 -06:00

Quanfa Fu

88b80534f6

io_uring: make io_sqpoll_wait_sq return void

Change the return type to void since it always return 0, and no need
to do the checking in syscall io_uring_enter.

Signed-off-by: Quanfa Fu <quanfafu@gmail.com>
Link: https://lore.kernel.org/r/20230115071519.554282-1-quanfafu@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2023-01-29 15:17:40 -07:00

Jens Axboe

17437f3114

io_uring: move SQPOLL related handling into its own file

Signed-off-by: Jens Axboe <axboe@kernel.dk>

2022-07-24 18:39:12 -06:00

3 Commits