The hcall H_GET_PERF_COUNTER_INFO can be used to get data related to
chips, dimms and system topology, by passing different counter request
values.
Patchset adds sysfs files to "/sys/devices/hv_gpci/interface/"
of hv_gpci pmu driver, which will expose system topology information
using H_GET_PERF_COUNTER_INFO hcall. The added sysfs files are
available for power10 and above platforms and needs root access
to read the data.
Patches 1,3,5,7,9 adds sysfs interface files to the hv_gpci
pmu driver, to get system topology information.
List of added sysfs files:
-> processor_bus_topology (Counter request value : 0xD0)
-> processor_config (Counter request value : 0x90)
-> affinity_domain_via_virtual_processor (Counter request value : 0xA0)
-> affinity_domain_via_domain (Counter request value : 0xB0)
-> affinity_domain_via_partition (Counter request value : 0xB1)
Patches 2,4,6,8,10 adds details of the newly added hv_gpci
interface files listed above in the ABI documentation.
Kajol Jain (10):
powerpc/hv_gpci: Add sysfs file inside hv_gpci device to show
processor bus topology information
docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document
processor_bus_topology sysfs interface file
powerpc/hv_gpci: Add sysfs file inside hv_gpci device to show
processor config information
docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document
processor_config sysfs interface file
powerpc/hv_gpci: Add sysfs file inside hv_gpci device to show affinity
domain via virtual processor information
docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document
affinity_domain_via_virtual_processor sysfs interface file
powerpc/hv_gpci: Add sysfs file inside hv_gpci device to show affinity
domain via domain information
docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document
affinity_domain_via_domain sysfs interface file
powerpc/hv_gpci: Add sysfs file inside hv_gpci device to show affinity
domain via partition information
docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document
affinity_domain_via_partition sysfs interface file
.../sysfs-bus-event_source-devices-hv_gpci | 89 +++
arch/powerpc/perf/hv-gpci.c | 584 +++++++++++++++++-
arch/powerpc/perf/hv-gpci.h | 15 +
3 files changed, 686 insertions(+), 2 deletions(-)
--
2.35.3
