Re: [PATCH v2] io_uring: do the sqpoll napi busy poll outside the submission block

[Jens Axboe <axboe@kernel.dk>]

On 7/30/24 3:10 PM, Olivier Langlois wrote:
> diff --git a/io_uring/napi.h b/io_uring/napi.h
> index 88f1c21d5548..5506c6af1ff5 100644
> --- a/io_uring/napi.h
> +++ b/io_uring/napi.h
> @@ -101,4 +101,13 @@ static inline int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx)
>  }
>  #endif /* CONFIG_NET_RX_BUSY_POLL */
>  
> +static inline int io_do_sqpoll_napi(struct io_ring_ctx *ctx)
> +{
> +	int ret = 0;
> +
> +	if (io_napi(ctx))
> +		ret = io_napi_sqpoll_busy_poll(ctx);
> +	return ret;
> +}
> +

static inline int io_do_sqpoll_napi(struct io_ring_ctx *ctx)
{
	if (io_napi(ctx))
		return io_napi_sqpoll_busy_poll(ctx);
	return 0;
}

is a less convoluted way of doing the same.

> @@ -322,6 +319,9 @@ static int io_sq_thread(void *data)
>  		if (io_sq_tw(&retry_list, IORING_TW_CAP_ENTRIES_VALUE))
>  			sqt_spin = true;
>  
> +		list_for_each_entry(ctx, &sqd->ctx_list, sqd_list) {
> +			io_do_sqpoll_napi(ctx);
> +		}

Unnecessary parens here.

-- 
Jens Axboe