From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: Vaibhav Jain <vaibhav@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org,
linux-kernel@vger.kernel.org
Cc: Vaibhav Jain <vaibhav@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH v8 3/5] powerpc/papr_scm: Fetch nvdimm health information from PHYP
Date: Wed, 27 May 2020 15:24:40 +0530 [thread overview]
Message-ID: <87v9kh7len.fsf@linux.ibm.com> (raw)
In-Reply-To: <20200527041244.37821-4-vaibhav@linux.ibm.com>
Vaibhav Jain <vaibhav@linux.ibm.com> writes:
> Implement support for fetching nvdimm health information via
> H_SCM_HEALTH hcall as documented in Ref[1]. The hcall returns a pair
> of 64-bit bitmap, bitwise-and of which is then stored in
> 'struct papr_scm_priv' and subsequently partially exposed to
> user-space via newly introduced dimm specific attribute
> 'papr/flags'. Since the hcall is costly, the health information is
> cached and only re-queried, 60s after the previous successful hcall.
>
> The patch also adds a documentation text describing flags reported by
> the the new sysfs attribute 'papr/flags' is also introduced at
> Documentation/ABI/testing/sysfs-bus-papr-scm.
>
> [1] commit 58b278f568f0 ("powerpc: Provide initial documentation for
> PAPR hcalls")
>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Ira Weiny <ira.weiny@intel.com>
> Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
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next prev parent reply other threads:[~2020-05-27 9:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-27 4:12 [PATCH v8 0/5] powerpc/papr_scm: Add support for reporting nvdimm health Vaibhav Jain
2020-05-27 4:12 ` [PATCH v8 1/5] powerpc: Document details on H_SCM_HEALTH hcall Vaibhav Jain
2020-05-27 18:56 ` Dan Williams
2020-05-28 19:24 ` Vaibhav Jain
2020-05-27 4:12 ` [PATCH v8 2/5] seq_buf: Export seq_buf_printf Vaibhav Jain
2020-06-01 12:01 ` Vaibhav Jain
2020-06-01 13:48 ` Steven Rostedt
2020-06-01 14:46 ` Vaibhav Jain
2020-05-27 4:12 ` [PATCH v8 3/5] powerpc/papr_scm: Fetch nvdimm health information from PHYP Vaibhav Jain
2020-05-27 9:54 ` Aneesh Kumar K.V [this message]
2020-05-27 4:12 ` [PATCH v8 4/5] ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods Vaibhav Jain
2020-05-27 9:55 ` Aneesh Kumar K.V
2020-05-27 4:12 ` [PATCH v8 5/5] powerpc/papr_scm: Implement support for PAPR_SCM_PDSM_HEALTH Vaibhav Jain
2020-05-27 9:55 ` Aneesh Kumar K.V
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