From: Jens Axboe <axboe@kernel.dk>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Carter Li 李通洲" <carter.li@eoitek.com>,
"Pavel Begunkov" <asml.silence@gmail.com>,
io-uring <io-uring@vger.kernel.org>
Subject: Re: [ISSUE] The time cost of IOSQE_IO_LINK
Date: Mon, 17 Feb 2020 10:16:20 -0800 [thread overview]
Message-ID: <592cf069-41ee-0bc1-1f83-e058e5dd53ff@kernel.dk> (raw)
In-Reply-To: <20200217174610.GU14897@hirez.programming.kicks-ass.net>
On 2/17/20 10:46 AM, Peter Zijlstra wrote:
> On Mon, Feb 17, 2020 at 09:16:34AM -0800, Jens Axboe wrote:
>> OK, did the conversion, and it turned out pretty trivial, and reduces my
>> lines as well since I don't have to manage the list side. See here:
>>
>> https://git.kernel.dk/cgit/linux-block/log/?h=io_uring-task-poll
>>
>> Three small prep patches:
>>
>> sched: move io-wq/workqueue worker sched in/out into helpers
>> kernel: abstract out task work helpers
>> sched: add a sched_work list
>
> The __task_work_add() thing should loose the set_notify_resume() thing,
> that is very much task_work specific. Task_work, works off of
> TIF_NOTIFY_RESUME on return-to-user. We really don't want that set for
> the sched_work stuff.
Done, killed it from the generic helper.
I also made a tweak to work_exited, as I'll need that for the sched work.
> I've not looked too hard at the rest, I need to run to the Dojo, should
> have some time laster tonight, otherwise tomorrow ;-)
Enjoy! Thanks again for taking a look. I've pushed out the update:
https://git.kernel.dk/cgit/linux-block/log/?h=io_uring-task-poll
--
Jens Axboe
next prev parent reply other threads:[~2020-02-17 18:16 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 16:31 [ISSUE] The time cost of IOSQE_IO_LINK Carter Li 李通洲
2020-02-12 17:11 ` Jens Axboe
2020-02-12 17:22 ` Jens Axboe
2020-02-12 17:29 ` Jens Axboe
2020-02-13 0:33 ` Carter Li 李通洲
2020-02-13 15:08 ` Pavel Begunkov
2020-02-13 15:14 ` Jens Axboe
2020-02-13 15:51 ` Carter Li 李通洲
2020-02-14 1:25 ` Carter Li 李通洲
2020-02-14 2:45 ` Jens Axboe
2020-02-14 5:03 ` Jens Axboe
2020-02-14 15:32 ` Peter Zijlstra
2020-02-14 15:47 ` Jens Axboe
2020-02-14 16:18 ` Jens Axboe
2020-02-14 17:52 ` Jens Axboe
2020-02-14 20:44 ` Jens Axboe
2020-02-15 0:16 ` Carter Li 李通洲
2020-02-15 1:10 ` Jens Axboe
2020-02-15 1:25 ` Carter Li 李通洲
2020-02-15 1:27 ` Jens Axboe
2020-02-15 6:01 ` Jens Axboe
2020-02-15 6:32 ` Carter Li 李通洲
2020-02-15 15:11 ` Jens Axboe
2020-02-16 19:06 ` Pavel Begunkov
2020-02-16 22:23 ` Jens Axboe
2020-02-17 10:30 ` Pavel Begunkov
2020-02-17 19:30 ` Jens Axboe
2020-02-16 23:06 ` Jens Axboe
2020-02-16 23:07 ` Jens Axboe
2020-02-17 12:09 ` Peter Zijlstra
2020-02-17 16:12 ` Jens Axboe
2020-02-17 17:16 ` Jens Axboe
2020-02-17 17:46 ` Peter Zijlstra
2020-02-17 18:16 ` Jens Axboe [this message]
2020-02-18 13:13 ` Peter Zijlstra
2020-02-18 14:27 ` [PATCH] asm-generic/atomic: Add try_cmpxchg() fallbacks Peter Zijlstra
2020-02-18 14:40 ` Peter Zijlstra
2020-02-20 10:30 ` Will Deacon
2020-02-20 10:37 ` Peter Zijlstra
2020-02-20 10:39 ` Will Deacon
2020-02-18 14:56 ` [ISSUE] The time cost of IOSQE_IO_LINK Oleg Nesterov
2020-02-18 15:07 ` Oleg Nesterov
2020-02-18 15:38 ` Peter Zijlstra
2020-02-18 16:33 ` Jens Axboe
2020-02-18 15:07 ` Peter Zijlstra
2020-02-18 15:50 ` [PATCH] task_work_run: don't take ->pi_lock unconditionally Oleg Nesterov
2020-02-20 16:39 ` Peter Zijlstra
2020-02-20 17:22 ` Oleg Nesterov
2020-02-20 17:49 ` Peter Zijlstra
2020-02-21 14:52 ` Oleg Nesterov
2020-02-24 18:47 ` Jens Axboe
2020-02-28 19:17 ` Jens Axboe
2020-02-28 19:25 ` Peter Zijlstra
2020-02-28 19:28 ` Jens Axboe
2020-02-28 20:06 ` Peter Zijlstra
2020-02-28 20:15 ` Jens Axboe
2020-02-18 16:46 ` [ISSUE] The time cost of IOSQE_IO_LINK Jens Axboe
2020-02-18 16:52 ` Jens Axboe
2020-02-18 13:13 ` Peter Zijlstra
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