83 lines
3.1 KiB
Plaintext
83 lines
3.1 KiB
Plaintext
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What: /sys/bus/event_source/devices/hv_gpci/format
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Date: September 2020
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description: Read-only. Attribute group to describe the magic bits
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that go into perf_event_attr.config for a particular pmu.
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(See ABI/testing/sysfs-bus-event_source-devices-format).
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Each attribute under this group defines a bit range of the
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perf_event_attr.config. All supported attributes are listed
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below::
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counter_info_version = "config:16-23"
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length = "config:24-31"
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partition_id = "config:32-63"
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request = "config:0-31"
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sibling_part_id = "config:32-63"
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hw_chip_id = "config:32-63"
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offset = "config:32-63"
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phys_processor_idx = "config:32-63"
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secondary_index = "config:0-15"
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starting_index = "config:32-63"
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For example::
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processor_core_utilization_instructions_completed = "request=0x94,
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phys_processor_idx=?,counter_info_version=0x8,
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length=8,offset=0x18"
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In this event, '?' after phys_processor_idx specifies this value
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this value will be provided by user while running this event.
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What: /sys/bus/event_source/devices/hv_gpci/interface/collect_privileged
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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'0' if the hypervisor is configured to forbid access to event
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counters being accumulated by other guests and to physical
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domain event counters.
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'1' if that access is allowed.
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What: /sys/bus/event_source/devices/hv_gpci/interface/ga
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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0 or 1. Indicates whether we have access to "GA" events (listed
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in arch/powerpc/perf/hv-gpci.h).
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What: /sys/bus/event_source/devices/hv_gpci/interface/expanded
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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0 or 1. Indicates whether we have access to "EXPANDED" events (listed
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in arch/powerpc/perf/hv-gpci.h).
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What: /sys/bus/event_source/devices/hv_gpci/interface/lab
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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0 or 1. Indicates whether we have access to "LAB" events (listed
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in arch/powerpc/perf/hv-gpci.h).
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What: /sys/bus/event_source/devices/hv_gpci/interface/version
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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A number indicating the version of the gpci interface that the
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hypervisor reports supporting.
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What: /sys/bus/event_source/devices/hv_gpci/interface/kernel_version
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Date: February 2014
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description:
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A number indicating the latest version of the gpci interface
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that the kernel is aware of.
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What: /sys/devices/hv_gpci/cpumask
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Date: October 2020
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Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
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Description: read only
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This sysfs file exposes the cpumask which is designated to make
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HCALLs to retrieve hv-gpci pmu event counter data.
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