Messages in this thread | | | Date | Wed, 22 Aug 2012 15:16:53 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf: do not flush maps on COMM for perf report |
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Em Wed, Aug 22, 2012 at 10:56:13AM -0600, David Ahern escreveu: > On 8/22/12 10:29 AM, Arnaldo Carvalho de Melo wrote: > >Adding the EXEC event, ditto. And I agree that while adding it we want > >to do 1/2 as pre-requisite. > > maps should not be flushed on a COMM event, so that was a mistake. > Given that what new information does an EXEC event provide? Same > process id. A COMM event is generated on an exec, so the name change > happens. Mappings are dropped prior to that - and there is no unmap > event. That seems to be a missing piece. Maps are added which is > handled by MMAP events. After that why is an exec event relevant?
Please read the original discussion about it:
https://lkml.org/lkml/2012/2/13/545
- Arnaldo
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