On Tue, Jun 25, 2013 at 07:57:29PM +0200, Robert Richter wrote:
> But what options there are to detach the event from all processes and
> make it persistent?
Something like this:
ioctl(fd, PERF_EVENT_IOC_DETACH, 0);
I guess this could simply set the persistent flag so that the rest of
the perf code knows not to destroy event buffers etc.
I don't have an idea about the reattaching though because you don't have
a file descriptor there.
Maybe for that we could really use the sys_perf_event_open() with flags
set to PERF_FLAG_PERSISTENT to note that we want to reattach to the
persistent event instead of opening a new one.
Something to that effect...
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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