On Wed, Jun 26, 2013 at 11:46:34AM +0200, Ingo Molnar wrote:
> If already existing persistent events show up somewhere in sysfs
> (or in a separate pseudofilesystem) then an open() of them [given
> sufficient privileges of the caller, etc.] could attach to them.
Yep, I think we want to say sys_perf_event_open(attr.persistent=1) which
would give you a file descriptor to an already existing persistent event
with attr.config=<id>.
If it doesn't exist, it creates it.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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