linux-kernel - Re: [PATCH] perf lock: clean the options for perf record

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Message-ID: <1298389415.2217.243.camel@twins>
Date:	Tue, 22 Feb 2011 16:43:35 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org, h.mitake@...il.com,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] perf lock: clean the options for perf record

On Wed, 2011-02-23 at 00:30 +0900, Hitoshi Mitake wrote:
> How do you think about it?

Most of the lock code (esp the spinlock stuff) is already way over the
threshold of sanity, adding to that for some dubious reasons doesn't
seem like a good idea.

I'm still not at all sure why people want all this lock tracing.
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