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From: Frederic Weisbecker on 19 May 2010 03:20
On Tue, May 18, 2010 at 03:32:58PM +0200, Peter Zijlstra wrote:
> 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.


What do you mean by the fact we need to multiplex event?

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