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docs: ABI: sysfs-bus-event_source-devices-vpa-dtl: Document sysfs event format entries for vpa_dtl pmu

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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>
Tested-by: Tejas Manhas <tejas05@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250915102947.26681-4-atrajeev@linux.ibm.com
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Kajol Jain 2025-09-15 15:59:43 +05:30 • committed by Madhavan Srinivasan
parent 4708fba19a
commit 6f2c65680c
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What: /sys/bus/event_source/devices/vpa_dtl/format
Date: February 2025
Contact: Linux on PowerPC Developer List <linuxppc-dev at 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: February 2025
Contact: Linux on PowerPC Developer List <linuxppc-dev at 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).