From: Matt Fleming <matt@codeblueprint.co.uk>
To: hpa@zytor.com, eranian@google.com, linux-kernel@vger.kernel.org,
tony.luck@intel.com, brgerst@gmail.com, peterz@infradead.org,
bp@alien8.de, tglx@linutronix.de, vikas.shivappa@linux.intel.com,
dsahern@gmail.com, dvlasenk@redhat.com, jolsa@redhat.com,
luto@amacapital.net, mingo@kernel.org, acme@redhat.com,
torvalds@linux-foundation.org, namhyung@kernel.org,
vincent.weaver@maine.edu, alexander.shishkin@linux.intel.com
Cc: linux-tip-commits@vger.kernel.org
Subject: Re: [tip:perf/urgent] perf/x86/cqm: Fix CQM handling of grouping events into a cache_group
Date: Mon, 21 Mar 2016 14:57:41 +0000 [thread overview]
Message-ID: <20160321145741.GC11676@codeblueprint.co.uk> (raw)
In-Reply-To: <tip-a223c1c7ab4cc64537dc4b911f760d851683768a@git.kernel.org>
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?
next prev parent reply other threads:[~2016-03-21 14:57 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 23:32 [PATCH V6 0/6] Intel memory b/w monitoring support Vikas Shivappa
2016-03-10 23:32 ` [PATCH 1/6] x86/perf/intel/cqm: Fix cqm handling of grouping events into a cache_group Vikas Shivappa
2016-03-21 9:51 ` [tip:perf/urgent] perf/x86/cqm: Fix CQM " tip-bot for Vikas Shivappa
2016-03-21 14:57 ` Matt Fleming [this message]
2016-03-21 18:14 ` Vikas Shivappa
2016-03-23 20:14 ` Matt Fleming
2016-03-23 22:49 ` Vikas Shivappa
2016-03-10 23:32 ` [PATCH 2/6] x86/perf/intel/cqm: Fix cqm memory leak and notifier leak Vikas Shivappa
2016-03-21 9:51 ` [tip:perf/urgent] perf/x86/cqm: Fix CQM " tip-bot for Vikas Shivappa
2016-03-10 23:32 ` [PATCH 3/6] x86/mbm: Intel Memory B/W Monitoring enumeration and init Vikas Shivappa
2016-03-21 9:52 ` [tip:perf/urgent] perf/x86/mbm: Add " tip-bot for Vikas Shivappa
2016-03-10 23:32 ` [PATCH 4/6] x86/mbm: Memory bandwidth monitoring event management Vikas Shivappa
2016-03-11 19:26 ` Tony Luck
2016-03-21 9:52 ` [tip:perf/urgent] perf/x86/mbm: Add memory " tip-bot for Tony Luck
2016-03-10 23:32 ` [PATCH 5/6] x86/mbm: RMID Recycling MBM changes Vikas Shivappa
2016-03-21 9:53 ` [tip:perf/urgent] perf/x86/mbm: Implement RMID recycling tip-bot for Vikas Shivappa
2016-03-21 15:09 ` Matt Fleming
2016-03-21 18:27 ` Vikas Shivappa
2016-03-23 20:59 ` Matt Fleming
2016-03-10 23:32 ` [PATCH 6/6] x86/mbm: Add support for MBM counter overflow handling Vikas Shivappa
2016-03-11 19:26 ` Tony Luck
2016-03-21 9:53 ` [tip:perf/urgent] perf/x86/mbm: " tip-bot for Vikas Shivappa
2016-03-11 22:54 ` [PATCH V6 0/6] Intel memory b/w monitoring support Peter Zijlstra
2016-03-11 23:22 ` Vikas Shivappa
2016-03-11 23:25 ` Vikas Shivappa
2016-03-11 23:45 ` Luck, Tony
2016-03-12 1:56 ` Luck, Tony
2016-03-12 7:53 ` Peter Zijlstra
2016-03-12 16:14 ` Luck, Tony
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