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From: Greg KH <gregkh@linuxfoundation.org>
To: Guixin Liu <kanie@linux.alibaba.com>
Cc: xiaoguang.wang@linux.alibaba.com, xlpang@linux.alibaba.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] uio: Replace mutex info_lock with percpu_ref to improve performance
Date: Tue, 8 Feb 2022 08:25:45 +0100	[thread overview]
Message-ID: <YgIa+W6kAsWMUdj3@kroah.com> (raw)
In-Reply-To: <1644304760-11862-1-git-send-email-kanie@linux.alibaba.com>

On Tue, Feb 08, 2022 at 03:19:20PM +0800, Guixin Liu wrote:
> This patch includes a modification to repace mutex info_lock with
> percpu_ref, in order to improve uio performance.

How does it improve performance?  What benchmark are you using and what
are the results?

These changes are quite complex, you need to better describe these in
order to be able to have them accepted.

thanks,

greg k-h

  reply	other threads:[~2022-02-08  7:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-08  7:19 Guixin Liu
2022-02-08  7:25 ` Greg KH [this message]
2022-02-08  8:00   ` kanie
2022-02-08 13:27 ` kernel test robot
2022-02-09  7:40 ` Christoph Hellwig
2022-02-09  9:26   ` Guixin Liu

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