From: Vaibhav Jain <vaibhav@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org Cc: Vaibhav Jain <vaibhav@linux.ibm.com>, "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>, Michael Ellerman <mpe@ellerman.id.au> Subject: [PATCH v4 0/2] powerpc/papr_scm: add support for reporting NVDIMM 'life_used_percentage' metric Date: Fri, 31 Jul 2020 12:11:51 +0530 [thread overview] Message-ID: <20200731064153.182203-1-vaibhav@linux.ibm.com> (raw) Changes since v3[1]: * Fixed a rebase issue pointed out by Aneesh in first patch in the series. [1] https://lore.kernel.org/linux-nvdimm/20200730121303.134230-1-vaibhav@linux.ibm.com --- This small patchset implements kernel side support for reporting 'life_used_percentage' metric in NDCTL with dimm health output for papr-scm NVDIMMs. With corresponding NDCTL side changes output for should be like: $ sudo ndctl list -DH [ { "dev":"nmem0", "health":{ "health_state":"ok", "life_used_percentage":0, "shutdown_state":"clean" } } ] PHYP supports H_SCM_PERFORMANCE_STATS hcall through which an LPAR can fetch various performance stats including 'fuel_gauge' percentage for an NVDIMM. 'fuel_gauge' metric indicates the usable life remaining of an NVDIMM expressed as percentage and 'life_used_percentage' can be calculated as 'life_used_percentage = 100 - fuel_gauge'. Structure of the patchset ========================= First patch implements necessary scaffolding needed to issue the H_SCM_PERFORMANCE_STATS hcall and fetch performance stats catalogue. The patch also implements support for 'perf_stats' sysfs attribute to report the full catalogue of supported performance stats by PHYP. Second and final patch implements support for sending this value to libndctl by extending the PAPR_PDSM_HEALTH pdsm payload to add a new field named 'dimm_fuel_gauge' to it. Vaibhav Jain (2): powerpc/papr_scm: Fetch nvdimm performance stats from PHYP powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric Documentation/ABI/testing/sysfs-bus-papr-pmem | 27 +++ arch/powerpc/include/uapi/asm/papr_pdsm.h | 9 + arch/powerpc/platforms/pseries/papr_scm.c | 199 ++++++++++++++++++ 3 files changed, 235 insertions(+) -- 2.26.2 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
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From: Vaibhav Jain <vaibhav@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org Cc: Santosh Sivaraj <santosh@fossix.org>, Oliver O'Halloran <oohall@gmail.com>, "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>, Vaibhav Jain <vaibhav@linux.ibm.com>, Dan Williams <dan.j.williams@intel.com>, Ira Weiny <ira.weiny@intel.com> Subject: [PATCH v4 0/2] powerpc/papr_scm: add support for reporting NVDIMM 'life_used_percentage' metric Date: Fri, 31 Jul 2020 12:11:51 +0530 [thread overview] Message-ID: <20200731064153.182203-1-vaibhav@linux.ibm.com> (raw) Changes since v3[1]: * Fixed a rebase issue pointed out by Aneesh in first patch in the series. [1] https://lore.kernel.org/linux-nvdimm/20200730121303.134230-1-vaibhav@linux.ibm.com --- This small patchset implements kernel side support for reporting 'life_used_percentage' metric in NDCTL with dimm health output for papr-scm NVDIMMs. With corresponding NDCTL side changes output for should be like: $ sudo ndctl list -DH [ { "dev":"nmem0", "health":{ "health_state":"ok", "life_used_percentage":0, "shutdown_state":"clean" } } ] PHYP supports H_SCM_PERFORMANCE_STATS hcall through which an LPAR can fetch various performance stats including 'fuel_gauge' percentage for an NVDIMM. 'fuel_gauge' metric indicates the usable life remaining of an NVDIMM expressed as percentage and 'life_used_percentage' can be calculated as 'life_used_percentage = 100 - fuel_gauge'. Structure of the patchset ========================= First patch implements necessary scaffolding needed to issue the H_SCM_PERFORMANCE_STATS hcall and fetch performance stats catalogue. The patch also implements support for 'perf_stats' sysfs attribute to report the full catalogue of supported performance stats by PHYP. Second and final patch implements support for sending this value to libndctl by extending the PAPR_PDSM_HEALTH pdsm payload to add a new field named 'dimm_fuel_gauge' to it. Vaibhav Jain (2): powerpc/papr_scm: Fetch nvdimm performance stats from PHYP powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric Documentation/ABI/testing/sysfs-bus-papr-pmem | 27 +++ arch/powerpc/include/uapi/asm/papr_pdsm.h | 9 + arch/powerpc/platforms/pseries/papr_scm.c | 199 ++++++++++++++++++ 3 files changed, 235 insertions(+) -- 2.26.2
next reply other threads:[~2020-07-31 6:42 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-31 6:41 Vaibhav Jain [this message] 2020-07-31 6:41 ` [PATCH v4 0/2] powerpc/papr_scm: add support for reporting NVDIMM 'life_used_percentage' metric Vaibhav Jain 2020-07-31 6:41 ` [PATCH v4 1/2] powerpc/papr_scm: Fetch nvdimm performance stats from PHYP Vaibhav Jain 2020-07-31 6:41 ` Vaibhav Jain 2020-07-31 7:12 ` Aneesh Kumar K.V 2020-07-31 7:12 ` Aneesh Kumar K.V 2020-07-31 6:41 ` [PATCH v4 2/2] powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric Vaibhav Jain 2020-07-31 6:41 ` Vaibhav Jain 2020-07-31 7:14 ` Aneesh Kumar K.V 2020-07-31 7:14 ` Aneesh Kumar K.V 2020-08-02 13:35 ` [PATCH v4 0/2] powerpc/papr_scm: add support for reporting NVDIMM 'life_used_percentage' metric Michael Ellerman 2020-08-02 13:35 ` Michael Ellerman
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