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From: Kajol Jain <kjain@linux.ibm.com>
To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
	nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org,
	peterz@infradead.org, dan.j.williams@intel.com,
	ira.weiny@intel.com, vishal.l.verma@intel.com
Cc: maddy@linux.ibm.com, santosh@fossix.org,
	aneesh.kumar@linux.ibm.com, vaibhav@linux.ibm.com,
	atrajeev@linux.vnet.ibm.com, tglx@linutronix.de,
	kjain@linux.ibm.com, rnsastry@linux.ibm.com
Subject: [PATCH v4 4/4] powerpc/papr_scm: Document papr_scm sysfs event format entries
Date: Mon,  2 Aug 2021 13:09:29 +0530	[thread overview]
Message-ID: <20210802073929.907431-5-kjain@linux.ibm.com> (raw)
In-Reply-To: <20210802073929.907431-1-kjain@linux.ibm.com>

Details is added for the event, cpumask and format attributes
in the ABI documentation.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
 Documentation/ABI/testing/sysfs-bus-papr-pmem | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-papr-pmem b/Documentation/ABI/testing/sysfs-bus-papr-pmem
index 95254cec92bf..4d86252448f8 100644
--- a/Documentation/ABI/testing/sysfs-bus-papr-pmem
+++ b/Documentation/ABI/testing/sysfs-bus-papr-pmem
@@ -61,3 +61,34 @@ Description:
 		* "CchRHCnt" : Cache Read Hit Count
 		* "CchWHCnt" : Cache Write Hit Count
 		* "FastWCnt" : Fast Write Count
+What:		/sys/devices/nmemX/format
+Date:		June 2021
+Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
+Description:	(RO) Attribute group to describe the magic bits
+                that go into perf_event_attr.config for a particular pmu.
+                (See ABI/testing/sysfs-bus-event_source-devices-format).
+                Each attribute under this group defines a bit range of the
+                perf_event_attr.config. Supported attribute is listed
+                below::
+		    event  = "config:0-4"  - event ID
+		For example::
+		    noopstat = "event=0x1"
+What:		/sys/devices/nmemX/events
+Date:		June 2021
+Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
+Description:    (RO) Attribute group to describe performance monitoring
+                events specific to papr-scm. Each attribute in this group describes
+                a single performance monitoring event supported by this nvdimm pmu.
+                The name of the file is the name of the event.
+                (See ABI/testing/sysfs-bus-event_source-devices-events).
+What:		/sys/devices/nmemX/cpumask
+Date:		June 2021
+Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
+Description:	(RO) This sysfs file exposes the cpumask which is designated to make
+                HCALLs to retrieve nvdimm pmu event counter data.

      parent reply	other threads:[~2021-08-02  7:40 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02  7:39 [PATCH v4 0/4] Add perf interface to expose nvdimm Kajol Jain
2021-08-02  7:39 ` [PATCH v4 1/4] drivers/nvdimm: Add nvdimm pmu structure Kajol Jain
2021-08-02  7:39 ` [PATCH v4 2/4] drivers/nvdimm: Add perf interface to expose nvdimm performance stats Kajol Jain
2021-08-02  7:39 ` [PATCH v4 3/4] powerpc/papr_scm: Add perf interface support Kajol Jain
2021-08-02  7:39 ` Kajol Jain [this message]

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