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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. This attribute is only available for NVDIMM devices
43		that support reporting NVDIMM performance stats. Each stat is
44		reported on a new line with each line composed of a
45		stat-identifier followed by it value. Below are currently known
46		dimm performance stats which are reported:
47
48		* "CtlResCt" : Controller Reset Count
49		* "CtlResTm" : Controller Reset Elapsed Time
50		* "PonSecs " : Power-on Seconds
51		* "MemLife " : Life Remaining
52		* "CritRscU" : Critical Resource Utilization
53		* "HostLCnt" : Host Load Count
54		* "HostSCnt" : Host Store Count
55		* "HostSDur" : Host Store Duration
56		* "HostLDur" : Host Load Duration
57		* "MedRCnt " : Media Read Count
58		* "MedWCnt " : Media Write Count
59		* "MedRDur " : Media Read Duration
60		* "MedWDur " : Media Write Duration
61		* "CchRHCnt" : Cache Read Hit Count
62		* "CchWHCnt" : Cache Write Hit Count
63		* "FastWCnt" : Fast Write Count
64