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"	: Indicates that NVDIMM contents will not
15				  survive a power cycle.
16		* "flush_fail"	: Indicates that NVDIMM contents
17				  couldn't be flushed during last
18				  shut-down event.
19		* "restore_fail": Indicates that NVDIMM contents
20				  couldn't be restored during NVDIMM
21				  initialization.
22		* "encrypted"	: NVDIMM contents are encrypted.
23		* "smart_notify": There is health event for the NVDIMM.
24		* "scrubbed"	: Indicating that contents of the
25				  NVDIMM have been scrubbed.
26		* "locked"	: Indicating that NVDIMM contents cant
27				  be modified until next power cycle.
28
29What:		/sys/bus/nd/devices/nmemX/papr/perf_stats
30Date:		May, 2020
31KernelVersion:	v5.9
32Contact:	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
33Description:
34		(RO) Report various performance stats related to papr-scm NVDIMM
35		device.  Each stat is reported on a new line with each line
36		composed of a stat-identifier followed by it value. Below are
37		currently known dimm performance stats which are reported:
38
39		* "CtlResCt" : Controller Reset Count
40		* "CtlResTm" : Controller Reset Elapsed Time
41		* "PonSecs " : Power-on Seconds
42		* "MemLife " : Life Remaining
43		* "CritRscU" : Critical Resource Utilization
44		* "HostLCnt" : Host Load Count
45		* "HostSCnt" : Host Store Count
46		* "HostSDur" : Host Store Duration
47		* "HostLDur" : Host Load Duration
48		* "MedRCnt " : Media Read Count
49		* "MedWCnt " : Media Write Count
50		* "MedRDur " : Media Read Duration
51		* "MedWDur " : Media Write Duration
52		* "CchRHCnt" : Cache Read Hit Count
53		* "CchWHCnt" : Cache Write Hit Count
54		* "FastWCnt" : Fast Write Count