Messages in this thread | | | Date | Thu, 17 Dec 2015 15:03:58 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in perf stat |
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> >> This is x86 specific. Why not just try it out and in case of error > >> suggest checking > >> if pinned system-wide events exist (such as NMI watchdog on x86). that would > >> be more generic. > > > > That's really complicated, i would have to tear down all state and then > > resubmit all the events. I think just checking the NMI watchdog is good > > enough. I couldn't give a sensible error message for the generic case > > anyways. > > > What about that fancy error reporting extension that was proposed a few months > back? It could help print a sensible error msg. Did it ever make it in?
AFAIK it's not in. Also even the extended error wouldn't know who installed a pinned counter.
-Andi
-- ak@linux.intel.com -- Speaking for myself only.
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