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From: Andi Kleen <andi@firstfloor.org>
To: David Ahern <dsahern@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
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        Stephane Eranian <eranian@google.com>,
        Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCH v0 13/71] perf tools: Add machine__get_thread_pid()
References: <1386765443-26966-1-git-send-email-alexander.shishkin@linux.intel.com>
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Date: Wed, 11 Dec 2013 13:18:54 -0800
In-Reply-To: <52A8BCCE.9010300@gmail.com> (David Ahern's message of "Wed, 11
	Dec 2013 12:28:14 -0700")
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David Ahern <dsahern@gmail.com> writes:
>
> Are you looking up the current or next task? If the former why not use
> sample->pid rather than parsing the sched_switch tracepoint?

The itrace stream doesn't have a pid field, and it needs the exact
time stamp of the switch. There may not actually be any samples
before decoding.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only