linux-kernel - Re: [PATCH v1 1/5] perf/core: Define the common branch type classification

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Date:   Fri, 7 Apr 2017 10:14:17 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>, kan.liang@...el.com,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Ingo Molnar <mingo@...nel.org>, yao.jin@...el.com
Subject: Re: [PATCH v1 1/5] perf/core: Define the common branch type
 classification

> Argh, fix your mailer. That is unreadable.
>
> /me reflows...

Sorry about that. Now I reconfigure the mail editor by applying "Preformat" and "Fixed Width" settings in thunderbird client. Wish it to be better.

> See, that's so much better..
>
> Oh, so you _ARE_ adding a kernel feature? I understood you only wanted
> to change perf-report.

Honestly it's a perf-report feature. But it needs kernel to record the branch type to perf_event_entry so there is a kernel patch for that in patch series.

>
> WTH didn't you Cc the maintainers?

Very sorry not to cc to all maintainers in v1. I will be careful of sending v2 patch series.

> Also, if you do this, you need to Cc the PowerPC people, since they too
> implement PERF_SAMPLE_BRANCH_ bits.

I will cc linuxppc-dev@...ts.ozlabs.org when sending v2.

Thanks
Jin Yao