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SubjectPERF_EVENT_IOC_SET_OUTPUT
Hi

It does not seem possible to use set-output between
task contexts of different types (e.g. a software event
to a hardware event)

If you look at perf_event_set_output():

/*
* If its not a per-cpu rb, it must be the same task.
*/
if (output_event->cpu == -1 && output_event->ctx != event->ctx)
goto out;

ctx (perf_event_context) won't be the same for events
of different types. Is this restriction necessary?

Regards
Adrian


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