Messages in this thread | | | Date | Wed, 18 Nov 2009 01:18:19 +0100 | From | Frederic Weisbecker <> | Subject | Re: [PATCH 3/7 v6] perf/core: Add a callback to perf events |
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On Tue, Nov 17, 2009 at 12:28:53PM +0100, Peter Zijlstra wrote: > On Sun, 2009-11-08 at 16:28 +0100, Frederic Weisbecker wrote: > > A simple callback in a perf event can be used for multiple purposes. > > For example it is useful for triggered based events like hardware > > breakpoints that need a callback to dispatch a triggered breakpoint > > event. > > > > v2: Simplify a bit the callback attribution as suggested by Paul > > Mackerras > > Yuck! So we add an opaque callback without semantics nor usage.
Yeah, this is intended for events that need to be able to trigger events to different channels. In the case of hw-breakpoints, it's either perf buffer, ptrace, etc...
Should I add some comments about it?
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