Message-ID: <557AED21.30403@gmail.com>
Date: Fri, 12 Jun 2015 08:30:57 -0600
From: David Ahern <dsahern@gmail.com>
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To: Pawel Moll <pawel.moll@arm.com>, Adrian Hunter <adrian.hunter@intel.com>
CC: Arnaldo Carvalho de Melo <acme@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, Andi Kleen <ak@linux.intel.com>,
        Ingo Molnar <mingo@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Jiri Olsa <jolsa@redhat.com>, Stephane Eranian <eranian@google.com>,
        "mathieu.poirier@linaro.org" <mathieu.poirier@linaro.org>
Subject: Re: [RFC PATCH] perf: Add PERF_RECORD_SWITCH to indicate context
 switches
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On 6/12/15 7:28 AM, Pawel Moll wrote:
>> Thanks, that's clear then.  There will just need to be a flag to indicate
>> whether it is scheduling in or out.
>
> Just a thought: wouldn't it be good to know what CPU have we been
> scheduled from/to? This kind of information would be especially valuable
> in heterogeneous systems.

yes that is essential.

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