1What: /sys/bus/nd/devices/nmemX/papr/flags 2Date: Apr, 2020 3KernelVersion: v5.8 4Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org, 5Description: 6 (RO) Report flags indicating various states of a 7 papr-pmem NVDIMM device. Each flag maps to a one or 8 more bits set in the dimm-health-bitmap retrieved in 9 response to H_SCM_HEALTH hcall. The details of the bit 10 flags returned in response to this hcall is available 11 at 'Documentation/powerpc/papr_hcalls.rst' . Below are 12 the flags reported in this sysfs file: 13 14 * "not_armed" 15 Indicates that NVDIMM contents will not 16 survive a power cycle. 17 * "flush_fail" 18 Indicates that NVDIMM contents 19 couldn't be flushed during last 20 shut-down event. 21 * "restore_fail" 22 Indicates that NVDIMM contents 23 couldn't be restored during NVDIMM 24 initialization. 25 * "encrypted" 26 NVDIMM contents are encrypted. 27 * "smart_notify" 28 There is health event for the NVDIMM. 29 * "scrubbed" 30 Indicating that contents of the 31 NVDIMM have been scrubbed. 32 * "locked" 33 Indicating that NVDIMM contents cant 34 be modified until next power cycle. 35 36What: /sys/bus/nd/devices/nmemX/papr/perf_stats 37Date: May, 2020 38KernelVersion: v5.9 39Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org, 40Description: 41 (RO) Report various performance stats related to papr-scm NVDIMM 42 device. Each stat is reported on a new line with each line 43 composed of a stat-identifier followed by it value. Below are 44 currently known dimm performance stats which are reported: 45 46 * "CtlResCt" : Controller Reset Count 47 * "CtlResTm" : Controller Reset Elapsed Time 48 * "PonSecs " : Power-on Seconds 49 * "MemLife " : Life Remaining 50 * "CritRscU" : Critical Resource Utilization 51 * "HostLCnt" : Host Load Count 52 * "HostSCnt" : Host Store Count 53 * "HostSDur" : Host Store Duration 54 * "HostLDur" : Host Load Duration 55 * "MedRCnt " : Media Read Count 56 * "MedWCnt " : Media Write Count 57 * "MedRDur " : Media Read Duration 58 * "MedWDur " : Media Write Duration 59 * "CchRHCnt" : Cache Read Hit Count 60 * "CchWHCnt" : Cache Write Hit Count 61 * "FastWCnt" : Fast Write Count 62