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| author | Jens Axboe <axboe@kernel.dk> | 2023-08-13 19:05:36 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-08-16 21:40:28 +0200 |
| commit | ebdfefc09c6de7897962769bd3e63a2ff443ebf5 (patch) | |
| tree | a70556ba92be56e756410d5e9871c24f1fe1ea24 /io_uring/rsrc.h | |
| parent | io_uring: simplify io_run_task_work_sig return (diff) | |
| download | linux-ebdfefc09c6de7897962769bd3e63a2ff443ebf5.tar.xz linux-ebdfefc09c6de7897962769bd3e63a2ff443ebf5.zip | |
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: fe76421d1da1 ("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>
Diffstat (limited to 'io_uring/rsrc.h')
0 files changed, 0 insertions, 0 deletions