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[RFC,3/4] powerpc/papr_scm: Document papr_scm sysfs event format entries

Message ID 20210512163824.255370-4-kjain@linux.ibm.com
State Changes Requested
Headers show
Series Add perf interface to expose nvdimm performance stats | expand


Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (1fab3666d738e4af3a7450c44441310e4d7a7e53)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 28 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

kajoljain May 12, 2021, 4:38 p.m. UTC
This patch add event format and events details in ABI

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
 Documentation/ABI/testing/sysfs-bus-papr-pmem | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
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diff --git a/Documentation/ABI/testing/sysfs-bus-papr-pmem b/Documentation/ABI/testing/sysfs-bus-papr-pmem
index 8316c33862a0..216f70deca7e 100644
--- a/Documentation/ABI/testing/sysfs-bus-papr-pmem
+++ b/Documentation/ABI/testing/sysfs-bus-papr-pmem
@@ -59,3 +59,28 @@  Description:
 		* "CchRHCnt" : Cache Read Hit Count
 		* "CchWHCnt" : Cache Write Hit Count
 		* "FastWCnt" : Fast Write Count
+What:		/sys/devices/nmemX/format
+Date:		May 2021
+Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
+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 attributes is listed
+                below::
+		    event  = "config:0-37"  - event ID
+		For example::
+		    noopstat = "event=0x1"
+What:		/sys/devices/nmemX/events
+Date:		May 2021
+Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
+Description:    (RO) Attribute group to describe performance monitoring
+                events specific to papr_pmem. 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).