Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
76 lines
2.8 KiB
Plaintext
76 lines
2.8 KiB
Plaintext
What: /sys/bus/nd/devices/nmemX/papr/flags
|
|
Date: Apr, 2020
|
|
KernelVersion: v5.8
|
|
Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
|
|
Description:
|
|
(RO) Report flags indicating various states of a
|
|
papr-pmem NVDIMM device. Each flag maps to a one or
|
|
more bits set in the dimm-health-bitmap retrieved in
|
|
response to H_SCM_HEALTH hcall. The details of the bit
|
|
flags returned in response to this hcall is available
|
|
at 'Documentation/arch/powerpc/papr_hcalls.rst' . Below are
|
|
the flags reported in this sysfs file:
|
|
|
|
* "not_armed"
|
|
Indicates that NVDIMM contents will not
|
|
survive a power cycle.
|
|
* "flush_fail"
|
|
Indicates that NVDIMM contents
|
|
couldn't be flushed during last
|
|
shut-down event.
|
|
* "restore_fail"
|
|
Indicates that NVDIMM contents
|
|
couldn't be restored during NVDIMM
|
|
initialization.
|
|
* "encrypted"
|
|
NVDIMM contents are encrypted.
|
|
* "smart_notify"
|
|
There is health event for the NVDIMM.
|
|
* "scrubbed"
|
|
Indicating that contents of the
|
|
NVDIMM have been scrubbed.
|
|
* "locked"
|
|
Indicating that NVDIMM contents can't
|
|
be modified until next power cycle.
|
|
|
|
What: /sys/bus/nd/devices/nmemX/papr/perf_stats
|
|
Date: May, 2020
|
|
KernelVersion: v5.9
|
|
Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
|
|
Description:
|
|
(RO) Report various performance stats related to papr-scm NVDIMM
|
|
device. This attribute is only available for NVDIMM devices
|
|
that support reporting NVDIMM performance stats. Each stat is
|
|
reported on a new line with each line composed of a
|
|
stat-identifier followed by it value. Below are currently known
|
|
dimm performance stats which are reported:
|
|
|
|
* "CtlResCt" : Controller Reset Count
|
|
* "CtlResTm" : Controller Reset Elapsed Time
|
|
* "PonSecs " : Power-on Seconds
|
|
* "MemLife " : Life Remaining
|
|
* "CritRscU" : Critical Resource Utilization
|
|
* "HostLCnt" : Host Load Count
|
|
* "HostSCnt" : Host Store Count
|
|
* "HostSDur" : Host Store Duration
|
|
* "HostLDur" : Host Load Duration
|
|
* "MedRCnt " : Media Read Count
|
|
* "MedWCnt " : Media Write Count
|
|
* "MedRDur " : Media Read Duration
|
|
* "MedWDur " : Media Write Duration
|
|
* "CchRHCnt" : Cache Read Hit Count
|
|
* "CchWHCnt" : Cache Write Hit Count
|
|
* "FastWCnt" : Fast Write Count
|
|
|
|
What: /sys/bus/nd/devices/nmemX/papr/health_bitmap_inject
|
|
Date: Jan, 2022
|
|
KernelVersion: v5.17
|
|
Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
|
|
Description:
|
|
(RO) Reports the health bitmap inject bitmap that is applied to
|
|
bitmap received from PowerVM via the H_SCM_HEALTH. This is used
|
|
to forcibly set specific bits returned from Hcall. These is then
|
|
used to simulate various health or shutdown states for an nvdimm
|
|
and are set by user-space tools like ndctl by issuing a PAPR DSM.
|
|
|