linux-kernel - Re: [PATCH v2][RFC] ftrace: function oprofiler

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Message-Id: <1225017357.27415.5.camel@twins>
Date:	Sun, 26 Oct 2008 11:35:57 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH v2][RFC] ftrace: function oprofiler

On Sat, 2008-10-25 at 20:55 -0400, Steven Rostedt wrote:

> This is a function profiler to count the number of times a function is hit.

I have to ask, _why_?

It seems like a nice enough gimmick, but is this information actually
useful?
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