Re: [patch] trace: Add user-space event tracing/injection

[Peter Zijlstra]

On Wed, 2010-11-17 at 14:10 +0100, Frederic Weisbecker wrote:
> 
> 
> 
> Why not using write() on the perf event fd?
> So that you don't only limit to a custom new simple event (which should
> match most needs) but you can also inject whatever existing event you like.

Because you don't have the perf event fd, the monitoring application has
it.
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