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"
15 Indicates th 15 Indicates that NVDIMM contents will not
16 survive a po 16 survive a power cycle.
17 * "flush_fail" 17 * "flush_fail"
18 Indicates th 18 Indicates that NVDIMM contents
19 couldn't be 19 couldn't be flushed during last
20 shut-down ev 20 shut-down event.
21 * "restore_fail" 21 * "restore_fail"
22 Indicates th 22 Indicates that NVDIMM contents
23 couldn't be 23 couldn't be restored during NVDIMM
24 initializati 24 initialization.
25 * "encrypted" 25 * "encrypted"
26 NVDIMM conte 26 NVDIMM contents are encrypted.
27 * "smart_notify" 27 * "smart_notify"
28 There is hea 28 There is health event for the NVDIMM.
29 * "scrubbed" 29 * "scrubbed"
30 Indicating t 30 Indicating that contents of the
31 NVDIMM have 31 NVDIMM have been scrubbed.
32 * "locked" 32 * "locked"
33 Indicating t !! 33 Indicating that NVDIMM contents cant
34 be modified 34 be modified until next power cycle.
35 35
36 What: /sys/bus/nd/devices/nmemX/papr 36 What: /sys/bus/nd/devices/nmemX/papr/perf_stats
37 Date: May, 2020 37 Date: May, 2020
38 KernelVersion: v5.9 38 KernelVersion: v5.9
39 Contact: linuxppc-dev <linuxppc-dev@list !! 39 Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-nvdimm@lists.01.org,
40 Description: 40 Description:
41 (RO) Report various performanc 41 (RO) Report various performance stats related to papr-scm NVDIMM
42 device. This attribute is only !! 42 device. Each stat is reported on a new line with each line
43 that support reporting NVDIMM !! 43 composed of a stat-identifier followed by it value. Below are
44 reported on a new line with ea !! 44 currently known dimm performance stats which are reported:
45 stat-identifier followed by it <<
46 dimm performance stats which a <<
47 45
48 * "CtlResCt" : Controller Rese 46 * "CtlResCt" : Controller Reset Count
49 * "CtlResTm" : Controller Rese 47 * "CtlResTm" : Controller Reset Elapsed Time
50 * "PonSecs " : Power-on Second 48 * "PonSecs " : Power-on Seconds
51 * "MemLife " : Life Remaining 49 * "MemLife " : Life Remaining
52 * "CritRscU" : Critical Resour 50 * "CritRscU" : Critical Resource Utilization
53 * "HostLCnt" : Host Load Count 51 * "HostLCnt" : Host Load Count
54 * "HostSCnt" : Host Store Coun 52 * "HostSCnt" : Host Store Count
55 * "HostSDur" : Host Store Dura 53 * "HostSDur" : Host Store Duration
56 * "HostLDur" : Host Load Durat 54 * "HostLDur" : Host Load Duration
57 * "MedRCnt " : Media Read Coun 55 * "MedRCnt " : Media Read Count
58 * "MedWCnt " : Media Write Cou 56 * "MedWCnt " : Media Write Count
59 * "MedRDur " : Media Read Dura 57 * "MedRDur " : Media Read Duration
60 * "MedWDur " : Media Write Dur 58 * "MedWDur " : Media Write Duration
61 * "CchRHCnt" : Cache Read Hit 59 * "CchRHCnt" : Cache Read Hit Count
62 * "CchWHCnt" : Cache Write Hit 60 * "CchWHCnt" : Cache Write Hit Count
63 * "FastWCnt" : Fast Write Coun 61 * "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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