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From: Jens Axboe <[email protected]>
To: [email protected], Pavel Begunkov <[email protected]>
Cc: [email protected]
Subject: Re: [PATCH] io_uring: get rid of intermediate aux cqe caches
Date: Thu, 29 Feb 2024 20:45:39 -0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <935d517f0e71218bfc1d40352a4754abb610176d.1709224453.git.asml.silence@gmail.com>


On Thu, 29 Feb 2024 16:36:37 +0000, Pavel Begunkov wrote:
> With defer taskrun we store aux cqes into a cache array and then flush
> into the CQ, and we also maintain the ordering so aux cqes are flushed
> before request completions. Why do we need the cache instead of pushing
> them directly? We acutally don't, so let's kill it.
> 
> One nuance is synchronisation -- the path we touch here is only for
> DEFER_TASKRUN and guaranteed to be executed in the task context, and
> all cqe posting is serialised by that. We also don't need locks because
> of that, see __io_cq_lock().
> 
> [...]

Applied, thanks!

[1/1] io_uring: get rid of intermediate aux cqe caches
      commit: a7fa76c8565aa6cbeb5030a6597d85643de0a306

Best regards,
-- 
Jens Axboe




      parent reply	other threads:[~2024-03-01  3:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-29 16:36 [PATCH] io_uring: get rid of intermediate aux cqe caches Pavel Begunkov
2024-02-29 18:03 ` David Wei
2024-03-01  1:57   ` Pavel Begunkov
2024-03-01  3:45 ` Jens Axboe
2024-03-04 22:07   ` Pavel Begunkov
2024-03-04 22:18     ` Pavel Begunkov
2024-03-04 23:36       ` Jens Axboe
2024-03-01  3:45 ` Jens Axboe [this message]

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