linux-kernel - Re: [PATCHv4] perf kvm: add kvm-stat for arm64

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Message-ID: <20200929033450.GB529@jagdpanzerIV.localdomain>
Date:   Tue, 29 Sep 2020 12:34:50 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Leo Yan <leo.yan@...aro.org>, Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will@...nel.org>,
        John Garry <john.garry@...wei.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Suleiman Souhlal <suleiman@...gle.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [PATCHv4] perf kvm: add kvm-stat for arm64

On (20/09/17 19:02), Sergey Senozhatsky wrote:
> Add support for perf kvm stat on arm64 platform.
> 
> Example:
>  # perf kvm stat report
> 
> Analyze events for all VMs, all VCPUs:
> 
>     VM-EXIT    Samples  Samples%     Time%    Min Time    Max Time         Avg time
> 
>    DABT_LOW     661867    98.91%    40.45%      2.19us   3364.65us      6.24us ( +-   0.34% )
>         IRQ       4598     0.69%    57.44%      2.89us   3397.59us   1276.27us ( +-   1.61% )
>         WFx       1475     0.22%     1.71%      2.22us   3388.63us    118.31us ( +-   8.69% )
>    IABT_LOW       1018     0.15%     0.38%      2.22us   2742.07us     38.29us ( +-  12.55% )
>       SYS64        180     0.03%     0.01%      2.07us    112.91us      6.57us ( +-  14.95% )
>       HVC64         17     0.00%     0.01%      2.19us    322.35us     42.95us ( +-  58.98% )
> 
> Total Samples:669155, Total events handled time:10216387.86us.
> 
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> Reviewed-by: Leo Yan <leo.yan@...aro.org>
> Tested-by: Leo Yan <leo.yan@...aro.org>

Arnaldo, any opinion on this?

	-ss