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From: David Carrillo-Cisneros <davidcc@google.com>
To: linux-kernel@vger.kernel.org
Cc: "x86@kernel.org" <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Andi Kleen <ak@linux.intel.com>, Kan Liang <kan.liang@intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Vegard Nossum <vegard.nossum@gmail.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Nilay Vaish <nilayvaish@gmail.com>, Borislav Petkov <bp@suse.de>,
	Vikas Shivappa <vikas.shivappa@linux.intel.com>,
	Ravi V Shankar <ravi.v.shankar@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>, Paul Turner <pjt@google.com>,
	Stephane Eranian <eranian@google.com>,
	David Carrillo-Cisneros <davidcc@google.com>
Subject: [PATCH v3 35/46] perf/x86/intel/cmt: use PERF_EV_CAP_CGROUP_NO_RECURSION in intel_cmt
Date: Sat, 29 Oct 2016 17:38:32 -0700	[thread overview]
Message-ID: <1477787923-61185-36-git-send-email-davidcc@google.com> (raw)
In-Reply-To: <1477787923-61185-1-git-send-email-davidcc@google.com>

Use newly added flag.

Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
---
 arch/x86/events/intel/cmt.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/events/intel/cmt.c b/arch/x86/events/intel/cmt.c
index 614b2f4..194038b 100644
--- a/arch/x86/events/intel/cmt.c
+++ b/arch/x86/events/intel/cmt.c
@@ -1734,6 +1734,14 @@ static int intel_cmt_event_init(struct perf_event *event)
 	INIT_LIST_HEAD(&event->hw.cmt_list);
 
 	/*
+	 * CMT hw only allows one rmid per core at the time and therefore
+	 * it is not compatible with the way generic code handles cgroup
+	 * dependencies.
+	 */
+	if (event->cgrp)
+		event->event_caps |= PERF_EV_CAP_CGROUP_NO_RECURSION;
+
+	/*
 	 * Task events can be read in any CPU in any package. CPU events
 	 * only in CPU's package. Both can read even if inactive.
 	 */
-- 
2.8.0.rc3.226.g39d4020

  parent reply	other threads:[~2016-10-30  0:43 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-30  0:37 [PATCH v3 00/46] Cache Monitoring Technology (aka CQM) David Carrillo-Cisneros
2016-10-30  0:37 ` [PATCH v3 01/46] perf/x86/intel/cqm: remove previous version of CQM and MBM David Carrillo-Cisneros
2016-10-30  0:37 ` [PATCH v3 02/46] perf/x86/intel: rename CQM cpufeatures to CMT David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 03/46] x86/intel: add CONFIG_INTEL_RDT_M configuration flag David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 04/46] perf/x86/intel/cmt: add device initialization and CPU hotplug support David Carrillo-Cisneros
2016-11-10 15:19   ` Thomas Gleixner
2016-10-30  0:38 ` [PATCH v3 05/46] perf/x86/intel/cmt: add per-package locks David Carrillo-Cisneros
2016-11-10 21:23   ` Thomas Gleixner
2016-11-11  2:22     ` David Carrillo-Cisneros
2016-11-11  7:21       ` Peter Zijlstra
2016-11-11  7:32         ` Ingo Molnar
2016-11-11  9:41         ` Thomas Gleixner
2016-11-11 17:21           ` David Carrillo-Cisneros
2016-11-13 10:58             ` Thomas Gleixner
2016-11-15  4:53         ` David Carrillo-Cisneros
2016-11-16 19:00           ` Thomas Gleixner
2016-10-30  0:38 ` [PATCH v3 06/46] perf/x86/intel/cmt: add intel_cmt pmu David Carrillo-Cisneros
2016-11-10 21:27   ` Thomas Gleixner
2016-10-30  0:38 ` [PATCH v3 07/46] perf/core: add RDT Monitoring attributes to struct hw_perf_event David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 08/46] perf/x86/intel/cmt: add MONitored Resource (monr) initialization David Carrillo-Cisneros
2016-11-10 23:09   ` Thomas Gleixner
2016-10-30  0:38 ` [PATCH v3 09/46] perf/x86/intel/cmt: add basic monr hierarchy David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 10/46] perf/x86/intel/cmt: add Package MONitored Resource (pmonr) initialization David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 11/46] perf/x86/intel/cmt: add cmt_user_flags (uflags) to monr David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 12/46] perf/x86/intel/cmt: add per-package rmid pools David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 13/46] perf/x86/intel/cmt: add pmonr's Off and Unused states David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 14/46] perf/x86/intel/cmt: add Active and Dep_{Idle, Dirty} states David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 15/46] perf/x86/intel: encapsulate rmid and closid updates in pqr cache David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 16/46] perf/x86/intel/cmt: set sched rmid and complete pmu start/stop/add/del David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 17/46] perf/x86/intel/cmt: add uflag CMT_UF_NOLAZY_RMID David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 18/46] perf/core: add arch_info field to struct perf_cgroup David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 19/46] perf/x86/intel/cmt: add support for cgroup events David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 20/46] perf/core: add pmu::event_terminate David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 21/46] perf/x86/intel/cmt: use newly introduced event_terminate David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 22/46] perf/x86/intel/cmt: sync cgroups and intel_cmt device start/stop David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 23/46] perf/core: hooks to add architecture specific features in perf_cgroup David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 24/46] perf/x86/intel/cmt: add perf_cgroup_arch_css_{online,offline} David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 25/46] perf/x86/intel/cmt: add monr->flags and CMT_MONR_ZOMBIE David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 26/46] sched: introduce the finish_arch_pre_lock_switch() scheduler hook David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 27/46] perf/x86/intel: add pqr cache flags and intel_pqr_ctx_switch David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 28/46] perf,perf/x86,perf/powerpc,perf/arm,perf/*: add int error return to pmu::read David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 29/46] perf/x86/intel/cmt: add error handling to intel_cmt_event_read David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 30/46] perf/x86/intel/cmt: add asynchronous read for task events David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 31/46] perf/x86/intel/cmt: add subtree read for cgroup events David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 32/46] perf/core: Add PERF_EV_CAP_READ_ANY_{CPU_,}PKG flags David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 33/46] perf/x86/intel/cmt: use PERF_EV_CAP_READ_{,CPU_}PKG flags in Intel cmt David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 34/46] perf/core: introduce PERF_EV_CAP_CGROUP_NO_RECURSION David Carrillo-Cisneros
2016-10-30  0:38 ` David Carrillo-Cisneros [this message]
2016-10-30  0:38 ` [PATCH v3 36/46] perf/core: add perf_event cgroup hooks for subsystem attributes David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 37/46] perf/x86/intel/cmt: add cont_monitoring to perf cgroup David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 38/46] perf/x86/intel/cmt: introduce read SLOs for rotation David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 39/46] perf/x86/intel/cmt: add max_recycle_threshold sysfs attribute David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 40/46] perf/x86/intel/cmt: add rotation scheduled work David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 41/46] perf/x86/intel/cmt: add rotation minimum progress SLO David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 42/46] perf/x86/intel/cmt: add rmid stealing David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 43/46] perf/x86/intel/cmt: add CMT_UF_NOSTEAL_RMID flag David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 44/46] perf/x86/intel/cmt: add debugfs intel_cmt directory David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 45/46] perf/stat: fix bug in handling events in error state David Carrillo-Cisneros
2016-10-30  0:38 ` [PATCH v3 46/46] perf/stat: revamp read error handling, snapshot and per_pkg events David Carrillo-Cisneros

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