Messages in this thread | | | Date | Wed, 17 Feb 2016 07:31:07 -0800 | From | Andi Kleen <> | Subject | Re: [PATCH 01/23] perf record: Add --all-user/--all-kernel options |
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On Wed, Feb 17, 2016 at 11:26:16AM -0300, Arnaldo Carvalho de Melo wrote: > Em Tue, Feb 16, 2016 at 07:10:37PM -0800, Andi Kleen escreveu: > > > Need to investigate why there are kernel samples when --all-user is used and > > > the other way around as well. > > > This is a known issue due to skid. PEBS usually avoids it. > > Right, thanks for pointing this out, we have to detect that :p is not > being used and warn the user about this possibility, i.e. user asks for > just kernel samples, tool finds user samples, tell that using :p+ may > help.
If you're really so worried about it the kernel driver could filter it.
-Andi
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