linux-kernel - Re: [PATCH] uio: Replace mutex info_lock with percpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <d528b122-bace-5318-f6a5-ec7af6eb14d7@linux.alibaba.com>
Date:   Tue, 8 Feb 2022 16:00:31 +0800
From:   kanie <kanie@...ux.alibaba.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     xiaoguang.wang@...ux.alibaba.com, xlpang@...ux.alibaba.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] uio: Replace mutex info_lock with percpu_ref to improve
 performance


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