Messages in this thread | | | Date | Mon, 21 Mar 2016 14:57:41 +0000 | From | Matt Fleming <> | Subject | Re: [tip:perf/urgent] perf/x86/cqm: Fix CQM handling of grouping events into a cache_group |
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On Mon, 21 Mar, at 02:51:29AM, tip-bot for Vikas Shivappa wrote: > Commit-ID: a223c1c7ab4cc64537dc4b911f760d851683768a > Gitweb: http://git.kernel.org/tip/a223c1c7ab4cc64537dc4b911f760d851683768a > Author: Vikas Shivappa <vikas.shivappa@linux.intel.com> > AuthorDate: Thu, 10 Mar 2016 15:32:07 -0800 > Committer: Ingo Molnar <mingo@kernel.org> > CommitDate: Mon, 21 Mar 2016 09:08:18 +0100 > > perf/x86/cqm: Fix CQM handling of grouping events into a cache_group > > Currently CQM (cache quality of service monitoring) is grouping all > events belonging to same PID to use one RMID. However its not counting > all of these different events. Hence we end up with a count of zero > for all events other than the group leader.
The reason that was done originally was because reporting for all events in a group led to duplicate values, since you'd be emitting the same RMID value multiple times.
Is this no longer a problem?
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