Re: [tip:perf/core] perf/ftrace: Optimize perf/tracepointinteraction for single events

[Frederic Weisbecker]

On Tue, May 18, 2010 at 05:15:42PM +0000, tip-bot for Peter Zijlstra wrote:
> Commit-ID:  4f41c013f553957765902fb01475972f0af3e8e7
> Gitweb:     http://git.kernel.org/tip/4f41c013f553957765902fb01475972f0af3e8e7
> Author:     Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> AuthorDate: Tue, 18 May 2010 18:08:32 +0200
> Committer:  Ingo Molnar <mingo@xxxxxxx>
> CommitDate: Tue, 18 May 2010 18:35:46 +0200
> 
> perf/ftrace: Optimize perf/tracepoint interaction for single events
> 
> When we've got but a single event per tracepoint
> there is no reason to try and multiplex it so don't.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Tested-by: Ingo Molnar <mingo@xxxxxxx>
> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Cc: Mike Galbraith <efault@xxxxxx>
> Cc: Paul Mackerras <paulus@xxxxxxxxx>
> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> LKML-Reference: <new-submission>
> Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
> ---


I haven't seen this patch going.

But yeah that's a nice optimization for UP machines.

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