From: Jens Axboe <[email protected]>
To: Pavel Begunkov <[email protected]>, [email protected]
Subject: Re: [PATCH for-next v2 11/12] io_uring: do msg_ring in target task via tw
Date: Wed, 7 Dec 2022 08:51:37 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 12/7/22 8:31 AM, Jens Axboe wrote:
> On 12/6/22 8:53?PM, Pavel Begunkov wrote:
>> @@ -43,6 +61,15 @@ static int io_msg_ring_data(struct io_kiocb *req)
>> if (msg->src_fd || msg->dst_fd || msg->flags)
>> return -EINVAL;
>>
>> + if (target_ctx->task_complete && current != target_ctx->submitter_task) {
>> + init_task_work(&msg->tw, io_msg_tw_complete);
>> + if (task_work_add(target_ctx->submitter_task, &msg->tw,
>> + TWA_SIGNAL))
>> + return -EOWNERDEAD;
>> +
>> + return IOU_ISSUE_SKIP_COMPLETE;
>> + }
>> +
>
> We should probably be able to get by with TWA_SIGNAL_NO_IPI here, no?
Considering we didn't even wake before, I'd say that's a solid yes.
--
Jens Axboe
next prev parent reply other threads:[~2022-12-07 15:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-07 3:53 [PATCH for-next v2 00/12] CQ locking optimisation Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 01/12] io_uring: dont remove file from msg_ring reqs Pavel Begunkov
2022-12-07 13:52 ` Jens Axboe
2022-12-07 21:12 ` Pavel Begunkov
2022-12-07 21:23 ` Jens Axboe
2022-12-07 3:53 ` [PATCH for-next v2 02/12] io_uring: improve io_double_lock_ctx fail handling Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 03/12] io_uring: skip overflow CQE posting for dying ring Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 04/12] io_uring: don't check overflow flush failures Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 05/12] io_uring: complete all requests in task context Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 06/12] io_uring: force multishot CQEs into " Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 07/12] io_uring: use tw for putting rsrc Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 08/12] io_uring: never run tw and fallback in parallel Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 09/12] io_uring: get rid of double locking Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 10/12] io_uring: extract a io_msg_install_complete helper Pavel Begunkov
2022-12-07 3:53 ` [PATCH for-next v2 11/12] io_uring: do msg_ring in target task via tw Pavel Begunkov
2022-12-07 15:31 ` Jens Axboe
2022-12-07 15:51 ` Jens Axboe [this message]
2022-12-07 21:18 ` Pavel Begunkov
2022-12-07 21:22 ` Jens Axboe
2022-12-07 3:53 ` [PATCH for-next v2 12/12] io_uring: skip spinlocking for ->task_complete Pavel Begunkov
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