Re: [PATCH v0 13/71] perf tools: Add machine__get_thread_pid()

From: David Ahern
Date: Wed Dec 11 2013 - 14:28:24 EST


On 12/11/13, 5:36 AM, Alexander Shishkin wrote:
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>

Add a function to get the pid from the tid.

This is needed when using the sched_switch
tracepoint to follow object code execution.
sched_switch identifies the thread but, to
find the process mmaps, we need the process
pid.

Are you looking up the current or next task? If the former why not use sample->pid rather than parsing the sched_switch tracepoint?

David

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