Messages in this thread | | | Date | Wed, 15 Feb 2017 12:13:40 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v9 0/8] perf/amd/iommu: Enable multi-IOMMU support |
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On Wed, Feb 15, 2017 at 11:44:24AM +0100, Jiri Olsa wrote: > does it say unsupported when you omit -a?
Yeah, it does dump the event name like it was counting but then it says <not supported>. For example:
<not supported> amd_iommu_0/...
> [jolsa@krava perf]$ ./perf stat -e 'cpu/cpu-cycles/' ^^^^^
Haha, I chuckle everytime I see this hostname :-)))
> > So, lemme ask perf tool people, can we guys make the -a thing default > > when detect that we're running only uncore events which all should need > > -a anyway? > > it's possible, can't think of anything being hurt by this now..
Right, so Peter meant something simple like: you parse all events, see that they're all uncore and enable system_wide if so.
I get the feeling that we want to do that for uncore-only events anyway...
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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