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From: Jens Axboe <axboe@kernel.dk>
To: Pavel Begunkov <asml.silence@gmail.com>, linux-block@vger.kernel.org
Cc: Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH v2 0/2] optimise blk_try_enter_queue()
Date: Thu, 21 Oct 2021 08:37:39 -0600	[thread overview]
Message-ID: <163482705916.41758.93518625125015139.b4-ty@kernel.dk> (raw)
In-Reply-To: <cover.1634822969.git.asml.silence@gmail.com>

On Thu, 21 Oct 2021 14:30:50 +0100, Pavel Begunkov wrote:
> Kill extra rcu_read_lock/unlock() pair in blk_try_enter_queue().
> Testing with io_uring (high batching) with nullblk:
> 
> Before:
> 3.20%  io_uring  [kernel.vmlinux]  [k] __rcu_read_unlock
> 3.05%  io_uring  [kernel.vmlinux]  [k] __rcu_read_lock
> 
> [...]

Applied, thanks!

[1/2] percpu_ref: percpu_ref_tryget_live() version holding RCU
      commit: 3b13c168186c115501ee7d194460ba2f8c825155
[2/2] block: kill extra rcu lock/unlock in queue enter
      commit: e94f68527a35271131cdf9d3fb4eb3c2513dc3d0

Best regards,
-- 
Jens Axboe



      parent reply	other threads:[~2021-10-21 14:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-21 13:30 [PATCH v2 0/2] optimise blk_try_enter_queue() Pavel Begunkov
2021-10-21 13:30 ` [PATCH v2 1/2] percpu_ref: percpu_ref_tryget_live() version holding RCU Pavel Begunkov
2021-10-21 14:01   ` Dennis Zhou
2021-10-22  9:22     ` Pavel Begunkov
2021-10-22 19:22       ` Dennis Zhou
2021-10-21 13:30 ` [PATCH v2 2/2] block: kill extra rcu lock/unlock in queue enter Pavel Begunkov
2021-10-21 14:37 ` Jens Axboe [this message]

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