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

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Details are added for the vpa_pmu event and format
attributes in the ABI documentation.

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Co-developed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241118114114.208964-2-kjain@linux.ibm.com
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Kajol Jain 2024-11-18 17:11:12 +05:30 committed by Michael Ellerman
parent 176cda0619
commit 4ae0b32ece
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What: /sys/bus/event_source/devices/vpa_pmu/format
Date: November 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:0-31" - event ID
For example::
l1_to_l2_lat = "event=0x1"
What: /sys/bus/event_source/devices/vpa_pmu/events
Date: November 2024
Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description: Read-only. Attribute group to describe performance monitoring
events for the Virtual Processor Area events. Each attribute
in this group describes a single performance monitoring event
supported by vpa_pmu. The name of the file is the name of
the event (See ABI/testing/sysfs-bus-event_source-devices-events).