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Diffstat (limited to 'Documentation/arch/x86/amd_hsmp.rst')
| -rw-r--r-- | Documentation/arch/x86/amd_hsmp.rst | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/arch/x86/amd_hsmp.rst b/Documentation/arch/x86/amd_hsmp.rst index 440e4b645a..c92bfd5535 100644 --- a/Documentation/arch/x86/amd_hsmp.rst +++ b/Documentation/arch/x86/amd_hsmp.rst @@ -41,6 +41,24 @@ In-kernel integration: * Locking across callers is taken care by the driver. +HSMP sysfs interface +==================== + +1. Metrics table binary sysfs + +AMD MI300A MCM provides GET_METRICS_TABLE message to retrieve +most of the system management information from SMU in one go. + +The metrics table is made available as hexadecimal sysfs binary file +under per socket sysfs directory created at +/sys/devices/platform/amd_hsmp/socket%d/metrics_bin + +Note: lseek() is not supported as entire metrics table is read. + +Metrics table definitions will be documented as part of Public PPR. +The same is defined in the amd_hsmp.h header. + + An example ========== |