# \[RESEND PATCH v5 4/4\] docs: ABI: sysfs-bus-nvdimm: Document sysfs event format entries for nvdimm pmu - From: Kajol Jain \ - Date: 2021-11-16 04:52:10 - List: linuxppc-dev - Page: https://ratatoskr.run/linuxppc-dev/2021/11/1575764 - Thread: https://ratatoskr.run/linuxppc-dev/2021/11/1575760/t.md ```text Details are added for the event, cpumask and format attributes in the ABI documentation. Signed-off-by: Kajol Jain --- Documentation/ABI/testing/sysfs-bus-nvdimm | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm index bff84a16812a..64004d5e4840 100644 --- a/Documentation/ABI/testing/sysfs-bus-nvdimm +++ b/Documentation/ABI/testing/sysfs-bus-nvdimm @@ -6,3 +6,38 @@ Description: The libnvdimm sub-system implements a common sysfs interface for platform nvdimm resources. See Documentation/driver-api/nvdimm/. + +What: /sys/bus/event_source/devices/nmemX/format +Date: September 2021 +KernelVersion: 5.16 +Contact: Kajol Jain +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:: + ctl_res_cnt = "event=0x1" + +What: /sys/bus/event_source/devices/nmemX/events +Date: September 2021 +KernelVersion: 5.16 +Contact: Kajol Jain +Description: (RO) Attribute group to describe performance monitoring events + for the nvdimm memory device. 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). A + listing of the events supported by a given nvdimm provider type + can be found in Documentation/driver-api/nvdimm/$provider. + +What: /sys/bus/event_source/devices/nmemX/cpumask +Date: September 2021 +KernelVersion: 5.16 +Contact: Kajol Jain +Description: (RO) This sysfs file exposes the cpumask which is designated to + to retrieve nvdimm pmu event counter data. -- 2.26.2 ```