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[RFC,2/2] docs: ABI: sysfs-bus-event_source-devices-vpa-dtl: Document sysfs event format entries for vpa_dtl pmu

Message ID 20240805095500.15844-2-kjain@linux.ibm.com (mailing list archive)
State RFC
Headers show
Series [RFC,1/2] powerpc/vpa_pmu: Add interface to expose vpa counters via perf | expand

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Commit Message

kajoljain Aug. 5, 2024, 9:55 a.m. UTC 
Details are added for the vpa_dtl pmu event and format
attributes in the ABI documentation.

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
---
 .../sysfs-bus-event_source-devices-vpa-dtl    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl
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Patch

diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl
new file mode 100644
index 000000000000..a07638aa250e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl
@@ -0,0 +1,25 @@ 
+What:           /sys/bus/event_source/devices/vpa_dtl/format
+Date:           August 2024
+Contact:        Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description:    Read-only. 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 are listed
+                below::
+
+				event  = "config:0-7"  - event ID
+
+		For example::
+
+		  dtl_cede = "event=0x1"
+
+What:           /sys/bus/event_source/devices/vpa_dtl/events
+Date:           August 2024
+Contact:        Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description:	(RO) Attribute group to describe performance monitoring events
+                for the Virtual Processor Dispatch Trace Log. Each attribute in
+		this group describes a single performance monitoring event
+		supported by vpa_dtl pmu.  The name of the file is the name of
+		the event (See ABI/testing/sysfs-bus-event_source-devices-events).