linux-kernel - [PATCH 0/5] Optimize perf ring-buffer

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Message-Id: <20100518133258.000434886@chello.nl>
Date:	Tue, 18 May 2010 15:32:58 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 0/5] Optimize perf ring-buffer

This patch-set optimizes the perf ring-buffer by removing IRQ disable and 
all LOCK ops from the fast paths.

There's also an RFC patch that adds perf_output_addr() which will allow
you to write directly to the buffer, however I'm not sure how to go
about using it for the trace events since we need to multiplex event --
there is no single copy of the actual event.

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