[PATCH v4 4/4] powerpc/papr_scm: Document papr_scm sysfs event format entries
From: Kajol Jain <hidden>
Date: 2021-08-02 07:41:12
Also in:
lkml, nvdimm
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> Signed-off-by: Kajol Jain <redacted> --- 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.
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2.26.2