1 What: /sys/bus/nd/devices/nmemX/papr 1 What: /sys/bus/nd/devices/nmemX/papr/flags
2 Date: Apr, 2020 2 Date: Apr, 2020
3 KernelVersion: v5.8 3 KernelVersion: v5.8
4 Contact: linuxppc-dev <linuxppc-dev@list !! 4 Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
5 Description: 5 Description:
6 (RO) Report flags indicating v 6 (RO) Report flags indicating various states of a
7 papr-pmem NVDIMM device. Each 7 papr-pmem NVDIMM device. Each flag maps to a one or
8 more bits set in the dimm-heal 8 more bits set in the dimm-health-bitmap retrieved in
9 response to H_SCM_HEALTH hcall 9 response to H_SCM_HEALTH hcall. The details of the bit
10 flags returned in response to 10 flags returned in response to this hcall is available
11 at 'Documentation/arch/powerpc !! 11 at 'Documentation/powerpc/papr_hcalls.rst' . Below are
12 the flags reported in this sys 12 the flags reported in this sysfs file:
13 13
14 * "not_armed" !! 14 * "not_armed" : Indicates that NVDIMM contents will not
15 Indicates th <<
16 survive a po 15 survive a power cycle.
17 * "flush_fail" !! 16 * "flush_fail" : Indicates that NVDIMM contents
18 Indicates th <<
19 couldn't be 17 couldn't be flushed during last
20 shut-down ev 18 shut-down event.
21 * "restore_fail" !! 19 * "restore_fail": Indicates that NVDIMM contents
22 Indicates th <<
23 couldn't be 20 couldn't be restored during NVDIMM
24 initializati 21 initialization.
25 * "encrypted" !! 22 * "encrypted" : NVDIMM contents are encrypted.
26 NVDIMM conte !! 23 * "smart_notify": There is health event for the NVDIMM.
27 * "smart_notify" !! 24 * "scrubbed" : Indicating that contents of the
28 There is hea <<
29 * "scrubbed" <<
30 Indicating t <<
31 NVDIMM have 25 NVDIMM have been scrubbed.
32 * "locked" !! 26 * "locked" : Indicating that NVDIMM contents cant
33 Indicating t <<
34 be modified 27 be modified until next power cycle.
35 28
36 What: /sys/bus/nd/devices/nmemX/papr 29 What: /sys/bus/nd/devices/nmemX/papr/perf_stats
37 Date: May, 2020 30 Date: May, 2020
38 KernelVersion: v5.9 31 KernelVersion: v5.9
39 Contact: linuxppc-dev <linuxppc-dev@list !! 32 Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
40 Description: 33 Description:
41 (RO) Report various performanc 34 (RO) Report various performance stats related to papr-scm NVDIMM
42 device. This attribute is only !! 35 device. Each stat is reported on a new line with each line
43 that support reporting NVDIMM !! 36 composed of a stat-identifier followed by it value. Below are
44 reported on a new line with ea !! 37 currently known dimm performance stats which are reported:
45 stat-identifier followed by it <<
46 dimm performance stats which a <<
47 38
48 * "CtlResCt" : Controller Rese 39 * "CtlResCt" : Controller Reset Count
49 * "CtlResTm" : Controller Rese 40 * "CtlResTm" : Controller Reset Elapsed Time
50 * "PonSecs " : Power-on Second 41 * "PonSecs " : Power-on Seconds
51 * "MemLife " : Life Remaining 42 * "MemLife " : Life Remaining
52 * "CritRscU" : Critical Resour 43 * "CritRscU" : Critical Resource Utilization
53 * "HostLCnt" : Host Load Count 44 * "HostLCnt" : Host Load Count
54 * "HostSCnt" : Host Store Coun 45 * "HostSCnt" : Host Store Count
55 * "HostSDur" : Host Store Dura 46 * "HostSDur" : Host Store Duration
56 * "HostLDur" : Host Load Durat 47 * "HostLDur" : Host Load Duration
57 * "MedRCnt " : Media Read Coun 48 * "MedRCnt " : Media Read Count
58 * "MedWCnt " : Media Write Cou 49 * "MedWCnt " : Media Write Count
59 * "MedRDur " : Media Read Dura 50 * "MedRDur " : Media Read Duration
60 * "MedWDur " : Media Write Dur 51 * "MedWDur " : Media Write Duration
61 * "CchRHCnt" : Cache Read Hit 52 * "CchRHCnt" : Cache Read Hit Count
62 * "CchWHCnt" : Cache Write Hit 53 * "CchWHCnt" : Cache Write Hit Count
63 * "FastWCnt" : Fast Write Coun !! 54 * "FastWCnt" : Fast Write Count
64 <<
65 What: /sys/bus/nd/devices/nmemX/papr <<
66 Date: Jan, 2022 <<
67 KernelVersion: v5.17 <<
68 Contact: linuxppc-dev <linuxppc-dev@list <<
69 Description: <<
70 (RO) Reports the health bitmap <<
71 bitmap received from PowerVM v <<
72 to forcibly set specific bits <<
73 used to simulate various healt <<
74 and are set by user-space tool <<
75 <<
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