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63 lines
2.2 KiB
63 lines
2.2 KiB
What: /sys/bus/nd/devices/nmemX/papr/flags |
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Date: Apr, 2020 |
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KernelVersion: v5.8 |
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Contact: linuxppc-dev <[email protected]>, [email protected], |
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Description: |
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(RO) Report flags indicating various states of a |
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papr-pmem NVDIMM device. Each flag maps to a one or |
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more bits set in the dimm-health-bitmap retrieved in |
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response to H_SCM_HEALTH hcall. The details of the bit |
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flags returned in response to this hcall is available |
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at 'Documentation/powerpc/papr_hcalls.rst' . Below are |
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the flags reported in this sysfs file: |
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* "not_armed" |
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Indicates that NVDIMM contents will not |
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survive a power cycle. |
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* "flush_fail" |
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Indicates that NVDIMM contents |
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couldn't be flushed during last |
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shut-down event. |
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* "restore_fail" |
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Indicates that NVDIMM contents |
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couldn't be restored during NVDIMM |
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initialization. |
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* "encrypted" |
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NVDIMM contents are encrypted. |
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* "smart_notify" |
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There is health event for the NVDIMM. |
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* "scrubbed" |
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Indicating that contents of the |
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NVDIMM have been scrubbed. |
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* "locked" |
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Indicating that NVDIMM contents cant |
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be modified until next power cycle. |
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What: /sys/bus/nd/devices/nmemX/papr/perf_stats |
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Date: May, 2020 |
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KernelVersion: v5.9 |
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Contact: linuxppc-dev <[email protected]>, [email protected], |
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Description: |
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(RO) Report various performance stats related to papr-scm NVDIMM |
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device. This attribute is only available for NVDIMM devices |
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that support reporting NVDIMM performance stats. Each stat is |
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reported on a new line with each line composed of a |
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stat-identifier followed by it value. Below are currently known |
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dimm performance stats which are reported: |
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* "CtlResCt" : Controller Reset Count |
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* "CtlResTm" : Controller Reset Elapsed Time |
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* "PonSecs " : Power-on Seconds |
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* "MemLife " : Life Remaining |
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* "CritRscU" : Critical Resource Utilization |
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* "HostLCnt" : Host Load Count |
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* "HostSCnt" : Host Store Count |
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* "HostSDur" : Host Store Duration |
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* "HostLDur" : Host Load Duration |
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* "MedRCnt " : Media Read Count |
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* "MedWCnt " : Media Write Count |
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* "MedRDur " : Media Read Duration |
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* "MedWDur " : Media Write Duration |
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* "CchRHCnt" : Cache Read Hit Count |
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* "CchWHCnt" : Cache Write Hit Count |
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* "FastWCnt" : Fast Write Count
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