On Mon, 21 Mar, at 02:51:29AM, tip-bot for Vikas Shivappa wrote:
Author: Vikas Shivappa <vikas.shivappa@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 10 Mar 2016 15:32:07 -0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
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?