linux-kernel - Reading perf counters at ftrace trace boundaries

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Date:	Sun, 11 Aug 2013 21:03:09 -0300
From:	Karim Yaghmour <karim.yaghmour@...rsys.com>
To:	linux-kernel@...r.kernel.org
CC:	Steven Rostedt <rostedt@...dmis.org>, mingo@...e.hu
Subject: Reading perf counters at ftrace trace boundaries

Wondering if there's a way for reading perf counters in the kernel. I'd
like to read/record perf counters on ftrace function tracing
entries/exits to provide a rundown of the value of various counters on
function call boundaries.

[ Steven: apologies for sending you a duplicate here of what I somewhat
already sent privately. ]

-- 
Karim Yaghmour
CEO - Opersys inc. / www.opersys.com
http://twitter.com/karimyaghmour
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