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

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Date:   Tue, 13 Oct 2020 23:29:34 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        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
Subject: Re: [PATCHv4] perf kvm: add kvm-stat for arm64

On Tue, Oct 13, 2020 at 11:37:09AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Sep 29, 2020 at 12:34:50PM +0900, Sergey Senozhatsky escreveu:
> > 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?
> 
> I'm not finding the actual patch, just this reply from you, lets try
> with b4 using this message Message-Id... Magic! But it isn't applying,
> can you please refresh the patch to what is in my perf/core branch?

I did a quick trying, the merge confliction is caused by the file
tools/perf/arch/arm64/util/Build (for the new added tsc.c).

@Sergey, please help to rebase on the latest perf/core branch [1].

Thanks,
Leo

[1] https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git branch: perf/core