Re: [RFC PATCH 5/5] perf: Implement perf_output_addr()

[Frederic Weisbecker]

On Tue, May 18, 2010 at 03:33:03PM +0200, Peter Zijlstra wrote:
> perf_output_addr() will, for space allocated using PO_LINEAR, allow
> one to get a linear address for writing its data to.
> 
> Tracepoints tend to want to do this, although when there is need to
> multiplex the events it is of course possible that each event will get
> different data due to having to construct the event multiple times.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> ---


I'm still not sure what you mean here by this multiplexing. Is
this about per cpu multiplexing?

There is another problem. We need something like
perf_output_discard() in case the filter reject the event (which
must be filled for this check to happen).

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/