Re: [PATCH v2 06/10] docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document affinity_domain_via_virtual_processor sysfs interface file
Hi-- On 7/10/23 02:27, Kajol Jain wrote: > Add details of the new hv-gpci interface file called > "affinity_domain_via_virtual_processor" in the ABI documentation. > > Signed-off-by: Kajol Jain > --- > .../sysfs-bus-event_source-devices-hv_gpci| 32 +++ > 1 file changed, 32 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci > b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci > index aff52dc3b05c..3b63d66658fe 100644 > --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci > +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci > @@ -144,3 +144,35 @@ Description: admin read only > 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 > +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_SUCESS", H_SUCCESS > + "H_AUTHORITY" and "H_PARAMETER" as the return type. s/and/or/ > + > + HCALL with return error type "H_AUTHORITY", can be resolved > during Drop the comma: ^ > + 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 > getPerfCountInfo documentation for Refer to > +more information. > + > + * "-EFBIG" : System information exceeds PAGE_SIZE. -- ~Randy
[PATCH v2 06/10] docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document affinity_domain_via_virtual_processor sysfs interface file
Add details of the new hv-gpci interface file called "affinity_domain_via_virtual_processor" in the ABI documentation. Signed-off-by: Kajol Jain --- .../sysfs-bus-event_source-devices-hv_gpci| 32 +++ 1 file changed, 32 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci index aff52dc3b05c..3b63d66658fe 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci @@ -144,3 +144,35 @@ Description: admin read only 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 +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_SUCESS", + "H_AUTHORITY" and "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 getPerfCountInfo documentation for + more information. + + * "-EFBIG" : System information exceeds PAGE_SIZE. -- 2.31.1
