linux-kernel - Re: [PATCH v4 1/2] docs: perf: Add description for HiSilicon PCIe PMU driver

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Message-ID: <fdee07c8-b8bb-5dd5-a01e-6b6421ad997e@huawei.com>
Date:   Thu, 20 May 2021 11:22:20 +0800
From:   "liuqi (BA)" <liuqi115@...wei.com>
To:     John Garry <john.garry@...wei.com>, <will@...nel.org>,
        <mark.rutland@....com>, <bhelgaas@...gle.com>
CC:     <linux-pci@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>,
        <zhangshaokun@...ilicon.com>
Subject: Re: [PATCH v4 1/2] docs: perf: Add description for HiSilicon PCIe PMU
 driver


Hi John,
On 2021/5/19 19:44, John Garry wrote:
> On 19/05/2021 10:49, Qi Liu wrote:
>> PCIe PMU Root Complex Integrated End Point(RCiEP) device is supported on
>> HiSilicon HIP09 platform. Document it to provide guidance on how to
>> use it.
>>
>> Signed-off-by: Qi Liu<liuqi115@...wei.com>
> 
> Reviewed-by: John Garry <john.garry@...wei.com>
> 
> JFYI, perf tool iostat support is in 5.13-rc1, so we can look to add 
> support for this HW as well in future.
> 
> My impression is that we should use metricgroups.
> 

Yes, perf iostat makes it easier for users to monitor PCIe bandwidth. 
I'll add perf iostat for HiSilicon PCIe PMU latter.

Thanks, Qi
> Thanks,
> John
> 
> .