Details is added for the event, cpumask and format attributes
in the ABI documentation.
Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Reviewed-by: Madhavan Srinivasan <ma...@linux.ibm.com>
Tested-by: Nageswara R Sastry <rnsas...@linux.ibm.com>
Signed-off-by: Kajol Jain <kj...@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-...@lists.ozlabs.org>,
nvd...@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-...@lists.ozlabs.org>,
nvd...@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-...@lists.ozlabs.org>,
nvd...@lists.linux.dev,
+Description: (RO) This sysfs file exposes the cpumask which is designated to
make
+ HCALLs to retrieve nvdimm pmu event counter data.
--
2.26.2
