linux-kernel - Re: [PATCH] drivers/perf: hisi: Add identifier sysfs file

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Date:   Tue, 14 Jul 2020 09:32:16 +0100
From:   Will Deacon <will@...nel.org>
To:     John Garry <john.garry@...wei.com>
Cc:     zhangshaokun@...ilicon.com, mark.rutland@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        qiangqing.zhang@....com, jolsa@...hat.com, linuxarm@...wei.com
Subject: Re: [PATCH] drivers/perf: hisi: Add identifier sysfs file

Hi John,

On Wed, Jun 17, 2020 at 09:05:11PM +0800, John Garry wrote:
> To allow userspace to identify the specific implementation of the device,
> add an "identifier" sysfs file.
> 
> Encoding is as follows:
> hi1620: 0x0	(aka hip08)
> hi1630: 0x30
> 
> Signed-off-by: John Garry <john.garry@...wei.com>

I'm struggling a bit to track this. If you still think it's worth pursuing,
please could you post a series with a cover-letter describing what this is
for, a link to the userspace changes and then patches for all the PMU
drivers that need updating? There was an RFC from you for the SMMUv3 PMU as
well, and also some other "arm64" changes.

Cheers,

Will