sysfs-bus-event_source-devices-hv_gpci (3218B)
1What: /sys/bus/event_source/devices/hv_gpci/format 2Date: September 2020 3Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 4Description: Read-only. Attribute group to describe the magic bits 5 that go into perf_event_attr.config for a particular pmu. 6 (See ABI/testing/sysfs-bus-event_source-devices-format). 7 8 Each attribute under this group defines a bit range of the 9 perf_event_attr.config. All supported attributes are listed 10 below:: 11 12 counter_info_version = "config:16-23" 13 length = "config:24-31" 14 partition_id = "config:32-63" 15 request = "config:0-31" 16 sibling_part_id = "config:32-63" 17 hw_chip_id = "config:32-63" 18 offset = "config:32-63" 19 phys_processor_idx = "config:32-63" 20 secondary_index = "config:0-15" 21 starting_index = "config:32-63" 22 23 For example:: 24 25 processor_core_utilization_instructions_completed = "request=0x94, 26 phys_processor_idx=?,counter_info_version=0x8, 27 length=8,offset=0x18" 28 29 In this event, '?' after phys_processor_idx specifies this value 30 this value will be provided by user while running this event. 31 32What: /sys/bus/event_source/devices/hv_gpci/interface/collect_privileged 33Date: February 2014 34Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 35Description: 36 '0' if the hypervisor is configured to forbid access to event 37 counters being accumulated by other guests and to physical 38 domain event counters. 39 40 '1' if that access is allowed. 41 42What: /sys/bus/event_source/devices/hv_gpci/interface/ga 43Date: February 2014 44Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 45Description: 46 0 or 1. Indicates whether we have access to "GA" events (listed 47 in arch/powerpc/perf/hv-gpci.h). 48 49What: /sys/bus/event_source/devices/hv_gpci/interface/expanded 50Date: February 2014 51Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 52Description: 53 0 or 1. Indicates whether we have access to "EXPANDED" events (listed 54 in arch/powerpc/perf/hv-gpci.h). 55 56What: /sys/bus/event_source/devices/hv_gpci/interface/lab 57Date: February 2014 58Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 59Description: 60 0 or 1. Indicates whether we have access to "LAB" events (listed 61 in arch/powerpc/perf/hv-gpci.h). 62 63What: /sys/bus/event_source/devices/hv_gpci/interface/version 64Date: February 2014 65Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 66Description: 67 A number indicating the version of the gpci interface that the 68 hypervisor reports supporting. 69 70What: /sys/bus/event_source/devices/hv_gpci/interface/kernel_version 71Date: February 2014 72Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 73Description: 74 A number indicating the latest version of the gpci interface 75 that the kernel is aware of. 76 77What: /sys/devices/hv_gpci/cpumask 78Date: October 2020 79Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> 80Description: read only 81 This sysfs file exposes the cpumask which is designated to make 82 HCALLs to retrieve hv-gpci pmu event counter data.