From: kanie <kanie@linux.alibaba.com>
To: Greg KH <gregkh@linuxfoundation.org>
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 16:00:31 +0800 [thread overview]
Message-ID: <d528b122-bace-5318-f6a5-ec7af6eb14d7@linux.alibaba.com> (raw)
In-Reply-To: <YgIa+W6kAsWMUdj3@kroah.com>
在 2022/2/8 15:25, Greg KH 写道:
> 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
okay, I will supplement the performance-test result later.
Guixin Liu
next prev parent reply other threads:[~2022-02-08 8:00 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
2022-02-08 8:00 ` kanie [this message]
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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