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io_uring/napi: improve __io_napi_add

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1. move the sock->sk pointer validity test outside the function to
   avoid the function call overhead and to make the function more
   more reusable
2. change its name to __io_napi_add_id to be more precise about it is
   doing
3. return an error code to report errors

Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Link: https://lore.kernel.org/r/d637fa3b437d753c0f4e44ff6a7b5bf2c2611270.1728828877.git.olivier@trillion01.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Olivier Langlois
2024-10-13 14:28:50 -04:00
committed by Jens Axboe
parent 45b3941d09
commit a5e26f49fe
2 changed files with 9 additions and 16 deletions
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6
io_uring/napi.h
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@@ -15,7 +15,7 @@ void io_napi_free(struct io_ring_ctx *ctx);
int io_register_napi(struct io_ring_ctx *ctx, void __user *arg);
int io_unregister_napi(struct io_ring_ctx *ctx, void __user *arg);
void __io_napi_add(struct io_ring_ctx *ctx, struct socket *sock);
int __io_napi_add_id(struct io_ring_ctx *ctx, unsigned int napi_id);
void __io_napi_busy_loop(struct io_ring_ctx *ctx, struct io_wait_queue *iowq);
int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx);
@@ -48,8 +48,8 @@ static inline void io_napi_add(struct io_kiocb *req)
return;
sock = sock_from_file(req->file);
if (sock)
__io_napi_add(ctx, sock);
if (sock && sock->sk)
__io_napi_add_id(ctx, READ_ONCE(sock->sk->sk_napi_id));
}
#else