Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756843AbbHZQWj (ORCPT ); Wed, 26 Aug 2015 12:22:39 -0400 Received: from g2t2352.austin.hp.com ([15.217.128.51]:53354 "EHLO g2t2352.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756007AbbHZQWd (ORCPT ); Wed, 26 Aug 2015 12:22:33 -0400 From: Toshi Kani To: dan.j.williams@intel.com, rafael.j.wysocki@intel.com Cc: robert.moore@intel.com, linux-nvdimm@ml01.01.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, elliott@hp.com, Toshi Kani Subject: [PATCH 1/2]: nfit: Clarify memory device state flags strings Date: Wed, 26 Aug 2015 10:20:23 -0600 Message-Id: <1440606024-29873-2-git-send-email-toshi.kani@hp.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1440606024-29873-1-git-send-email-toshi.kani@hp.com> References: <1440606024-29873-1-git-send-email-toshi.kani@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3701 Lines: 86 ACPI 6.0 NFIT Memory Device State Flags in Table 5-129 defines NVDIMM status as follows. These bits indicate multiple info, such as failures, pending event, and capability. Bit [0] set to 1 to indicate that the previous SAVE to the Memory Device failed. Bit [1] set to 1 to indicate that the last RESTORE from the Memory Device failed. Bit [2] set to 1 to indicate that platform flush of data to Memory Device failed. As a result, the restored data content may be inconsistent even if SAVE and RESTORE do not indicate failure. Bit [3] set to 1 to indicate that the Memory Device is observed to be not armed prior to OSPM hand off. A Memory Device is considered armed if it is able to accept persistent writes. Bit [4] set to 1 to indicate that the Memory Device observed SMART and health events prior to OSPM handoff. Bit [5] is set to 1 to indicate that platform firmware is enabled to notify OSPM on SMART and health events related to the memory device using Notify codes as specified in Section 5.6.6. /sys/bus/nd/devices/nmemX/nfit/flags shows this flags info. The output strings associated with the bits are "save", "restore", "smart", etc., which can be confusing as they may be interpreted as positive status, i.e. save succeeded. Change the strings to be more descriptive per the ACPI spec. Also add a string to bit 5 for completeness. Change also the dev_info() message in acpi_nfit_register_dimms() to be consistent with the sysfs flags strings. Reported-by: Robert Elliott Signed-off-by: Toshi Kani Cc: Dan Williams --- drivers/acpi/nfit.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index c3fe206..6993ff2 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -701,12 +701,13 @@ static ssize_t flags_show(struct device *dev, { u16 flags = to_nfit_memdev(dev)->flags; - return sprintf(buf, "%s%s%s%s%s\n", - flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save " : "", - flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore " : "", - flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush " : "", - flags & ACPI_NFIT_MEM_ARMED ? "arm " : "", - flags & ACPI_NFIT_MEM_HEALTH_OBSERVED ? "smart " : ""); + return sprintf(buf, "%s%s%s%s%s%s\n", + flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save_fail " : "", + flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore_fail " : "", + flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush_fail " : "", + flags & ACPI_NFIT_MEM_ARMED ? "not_arm " : "", + flags & ACPI_NFIT_MEM_HEALTH_OBSERVED ? "smart_event " : "", + flags & ACPI_NFIT_MEM_HEALTH_ENABLED ? "notify_enabled " : ""); } static DEVICE_ATTR_RO(flags); @@ -834,11 +835,11 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) continue; dev_info(acpi_desc->dev, "%s: failed: %s%s%s%s\n", - nvdimm_name(nvdimm), - mem_flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save " : "", - mem_flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore " : "", - mem_flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush " : "", - mem_flags & ACPI_NFIT_MEM_ARMED ? "arm " : ""); + nvdimm_name(nvdimm), + mem_flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save_fail " : "", + mem_flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore_fail ":"", + mem_flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush_fail " : "", + mem_flags & ACPI_NFIT_MEM_ARMED ? "not_arm " : ""); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/