On Tue, Oct 08, 2013 at 08:59:38AM +0200, Ingo Molnar wrote:

 > You might want to concentrate your efforts from fighting perf 
 > functionality towards decreasing per tracepoint overhead instead,
 > without hurting kernel functionality and maintainability.

Making it easier to disable perf entirely would be desirable for one use case.
I can't do a trinity run for more than a few hours for the last few months
without hitting perf/ftrace bugs that no-one seems to be able to get their
heads around.

It would be useful if I could in the meantime find bugs in other parts of the
kernel by disabling all the affected code.

	Dave