On 1/2/23 8:04 PM, Pavel Begunkov wrote:
> 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 <asml.silence@xxxxxxxxx>
> ---
> include/linux/io_uring_types.h | 1 +
> io_uring/io_uring.c | 3 ++-
> io_uring/io_uring.h | 9 +++++++++
> 3 files changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
> index dcd8a563ab52..cbcd3aaddd9d 100644
> --- a/include/linux/io_uring_types.h
> +++ b/include/linux/io_uring_types.h
> @@ -286,6 +286,7 @@ struct io_ring_ctx {
> unsigned cq_entries;
> struct io_ev_fd __rcu *io_ev_fd;
> struct wait_queue_head cq_wait;
> + struct wait_queue_head poll_wq;
> unsigned cq_extra;
> } ____cacheline_aligned_in_smp;
>
Should we move poll_wq somewhere else, more out of the way? Would need to
gate the check a flag or something.
--
Jens Axboe
