| 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. |
| |
| What: /sys/devices/hv_gpci/interface/processor_bus_topology |
| Date: July 2023 |
| Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> |
| Description: admin read only |
| This sysfs file exposes the system topology information by making HCALL |
| H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value |
| PROCESSOR_BUS_TOPOLOGY(0xD0). |
| |
| * This sysfs file will be created only for power10 and above platforms. |
| |
| * User needs root privileges to read data from this sysfs file. |
| |
| * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", |
| "H_AUTHORITY" or "H_PARAMETER" as the return type. |
| |
| HCALL with return error type "H_AUTHORITY" can be resolved during |
| runtime by setting "Enable Performance Information Collection" option. |
| |
| * The end user reading this sysfs file must decode the content as per |
| underlying platform/firmware. |
| |
| Possible error codes while reading this sysfs file: |
| |
| * "-EPERM" : Partition is not permitted to retrieve performance information, |
| required to set "Enable Performance Information Collection" option. |
| |
| * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address |
| or because of some hardware error. Refer to getPerfCountInfo documentation for |
| more information. |
| |
| * "-EFBIG" : System information exceeds PAGE_SIZE. |
| |
| What: /sys/devices/hv_gpci/interface/processor_config |
| Date: July 2023 |
| Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> |
| Description: admin read only |
| This sysfs file exposes the system topology information by making HCALL |
| H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value |
| PROCESSOR_CONFIG(0x90). |
| |
| * This sysfs file will be created only for power10 and above platforms. |
| |
| * User needs root privileges to read data from this sysfs file. |
| |
| * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", |
| "H_AUTHORITY" or "H_PARAMETER" as the return type. |
| |
| HCALL with return error type "H_AUTHORITY" can be resolved during |
| runtime by setting "Enable Performance Information Collection" option. |
| |
| * The end user reading this sysfs file must decode the content as per |
| underlying platform/firmware. |
| |
| Possible error codes while reading this sysfs file: |
| |
| * "-EPERM" : Partition is not permitted to retrieve performance information, |
| required to set "Enable Performance Information Collection" option. |
| |
| * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address |
| or because of some hardware error. Refer to getPerfCountInfo documentation for |
| more information. |
| |
| * "-EFBIG" : System information exceeds PAGE_SIZE. |
| |
| What: /sys/devices/hv_gpci/interface/affinity_domain_via_virtual_processor |
| Date: July 2023 |
| Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> |
| Description: admin read only |
| This sysfs file exposes the system topology information by making HCALL |
| H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value |
| AFFINITY_DOMAIN_INFORMATION_BY_VIRTUAL_PROCESSOR(0xA0). |
| |
| * This sysfs file will be created only for power10 and above platforms. |
| |
| * User needs root privileges to read data from this sysfs file. |
| |
| * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", |
| "H_AUTHORITY" or "H_PARAMETER" as the return type. |
| |
| HCALL with return error type "H_AUTHORITY" can be resolved during |
| runtime by setting "Enable Performance Information Collection" option. |
| |
| * The end user reading this sysfs file must decode the content as per |
| underlying platform/firmware. |
| |
| Possible error codes while reading this sysfs file: |
| |
| * "-EPERM" : Partition is not permitted to retrieve performance information, |
| required to set "Enable Performance Information Collection" option. |
| |
| * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address |
| or because of some hardware error. Refer to getPerfCountInfo documentation for |
| more information. |
| |
| * "-EFBIG" : System information exceeds PAGE_SIZE. |
| |
| What: /sys/devices/hv_gpci/interface/affinity_domain_via_domain |
| Date: July 2023 |
| Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> |
| Description: admin read only |
| This sysfs file exposes the system topology information by making HCALL |
| H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value |
| AFFINITY_DOMAIN_INFORMATION_BY_DOMAIN(0xB0). |
| |
| * This sysfs file will be created only for power10 and above platforms. |
| |
| * User needs root privileges to read data from this sysfs file. |
| |
| * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", |
| "H_AUTHORITY" or "H_PARAMETER" as the return type. |
| |
| HCALL with return error type "H_AUTHORITY" can be resolved during |
| runtime by setting "Enable Performance Information Collection" option. |
| |
| * The end user reading this sysfs file must decode the content as per |
| underlying platform/firmware. |
| |
| Possible error codes while reading this sysfs file: |
| |
| * "-EPERM" : Partition is not permitted to retrieve performance information, |
| required to set "Enable Performance Information Collection" option. |
| |
| * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address |
| or because of some hardware error. Refer to getPerfCountInfo documentation for |
| more information. |
| |
| * "-EFBIG" : System information exceeds PAGE_SIZE. |
| |
| What: /sys/devices/hv_gpci/interface/affinity_domain_via_partition |
| Date: July 2023 |
| Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> |
| Description: admin read only |
| This sysfs file exposes the system topology information by making HCALL |
| H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value |
| AFFINITY_DOMAIN_INFORMATION_BY_PARTITION(0xB1). |
| |
| * This sysfs file will be created only for power10 and above platforms. |
| |
| * User needs root privileges to read data from this sysfs file. |
| |
| * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", |
| "H_AUTHORITY" or "H_PARAMETER" as the return type. |
| |
| HCALL with return error type "H_AUTHORITY" can be resolved during |
| runtime by setting "Enable Performance Information Collection" option. |
| |
| * The end user reading this sysfs file must decode the content as per |
| underlying platform/firmware. |
| |
| Possible error codes while reading this sysfs file: |
| |
| * "-EPERM" : Partition is not permitted to retrieve performance information, |
| required to set "Enable Performance Information Collection" option. |
| |
| * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address |
| or because of some hardware error. Refer to getPerfCountInfo documentation for |
| more information. |
| |
| * "-EFBIG" : System information exceeds PAGE_SIZE. |
