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Date: Fri, 18 Oct 2013 09:03:34 -0600
From: David Ahern <dsahern@gmail.com>
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To: Adrian Hunter <adrian.hunter@intel.com>
CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Ingo Molnar <mingo@redhat.com>, linux-kernel@vger.kernel.org,
        Frederic Weisbecker <fweisbec@gmail.com>, Jiri Olsa <jolsa@redhat.com>,
        Mike Galbraith <efault@gmx.de>, Namhyung Kim <namhyung@gmail.com>,
        Paul Mackerras <paulus@samba.org>,
        Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 19/19] perf tools: allow non-matching sample types
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On 10/18/13 8:50 AM, Adrian Hunter wrote:
> On 18/10/13 17:25, David Ahern wrote:
>> Arnaldo and I have discussed adding callchain handling to perf-trace. To do
>> that we only need stack data (including IP) for one event -- eg,
>> raw_syscalls:sys_enter. That means raw_syscalls:sys_enter and
>> raw_syscalls:sys_exit will have different attributes set - including ones in
>> the MASK.
>
> So how do you know which sample is which?

We need a solution to the problem, and my point is I don't want to 
increase data in all samples.

David