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Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci new file mode 100644 index 000000000..12e2bf927 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci @@ -0,0 +1,82 @@ +What: /sys/bus/event_source/devices/hv_gpci/format +Date: September 2020 +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. All supported attributes are listed + below:: + + counter_info_version = "config:16-23" + length = "config:24-31" + partition_id = "config:32-63" + request = "config:0-31" + sibling_part_id = "config:32-63" + hw_chip_id = "config:32-63" + offset = "config:32-63" + phys_processor_idx = "config:32-63" + secondary_index = "config:0-15" + starting_index = "config:32-63" + + For example:: + + processor_core_utilization_instructions_completed = "request=0x94, + phys_processor_idx=?,counter_info_version=0x8, + length=8,offset=0x18" + + In this event, '?' after phys_processor_idx specifies this value + this value will be provided by user while running this event. + +What: /sys/bus/event_source/devices/hv_gpci/interface/collect_privileged +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + '0' if the hypervisor is configured to forbid access to event + counters being accumulated by other guests and to physical + domain event counters. + + '1' if that access is allowed. + +What: /sys/bus/event_source/devices/hv_gpci/interface/ga +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + 0 or 1. Indicates whether we have access to "GA" events (listed + in arch/powerpc/perf/hv-gpci.h). + +What: /sys/bus/event_source/devices/hv_gpci/interface/expanded +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + 0 or 1. Indicates whether we have access to "EXPANDED" events (listed + in arch/powerpc/perf/hv-gpci.h). + +What: /sys/bus/event_source/devices/hv_gpci/interface/lab +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + 0 or 1. Indicates whether we have access to "LAB" events (listed + in arch/powerpc/perf/hv-gpci.h). + +What: /sys/bus/event_source/devices/hv_gpci/interface/version +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + A number indicating the version of the gpci interface that the + hypervisor reports supporting. + +What: /sys/bus/event_source/devices/hv_gpci/interface/kernel_version +Date: February 2014 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: + A number indicating the latest version of the gpci interface + that the kernel is aware of. + +What: /sys/devices/hv_gpci/cpumask +Date: October 2020 +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> +Description: read only + This sysfs file exposes the cpumask which is designated to make + HCALLs to retrieve hv-gpci pmu event counter data. |