From patchwork Mon Mar 6 20:32:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 9607547 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1ED03602B4 for ; Mon, 6 Mar 2017 20:32:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0E7F42684F for ; Mon, 6 Mar 2017 20:32:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 033EF28446; Mon, 6 Mar 2017 20:32:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A54822684F for ; Mon, 6 Mar 2017 20:32:33 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 8E9A98033B; Mon, 6 Mar 2017 12:32:33 -0800 (PST) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id A148280328 for ; Mon, 6 Mar 2017 12:32:32 -0800 (PST) Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Mar 2017 12:32:32 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,255,1484035200"; d="scan'208";a="232949635" Received: from djiang5-desk3.ch.intel.com ([143.182.137.38]) by fmsmga004.fm.intel.com with ESMTP; 06 Mar 2017 12:32:32 -0800 Subject: [PATCH 1/5] libnvdimm: Add mechanism to publish badblocks at nd region level From: Dave Jiang To: dan.j.williams@intel.com Date: Mon, 06 Mar 2017 13:32:32 -0700 Message-ID: <148883235198.49239.5744626493543231294.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <148883211285.49239.17952572594430933942.stgit@djiang5-desk3.ch.intel.com> References: <148883211285.49239.17952572594430933942.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-nvdimm@lists.01.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP badblocks sysfs file will be export at nd_region level. When nvdimm event notifier happens for NVDIMM_REVALIATE_POISON, the badblocks in the nd region will be updated. Signed-off-by: Dave Jiang Reviewed-by: Johannes Thumshirn --- drivers/nvdimm/nd.h | 1 + drivers/nvdimm/region.c | 24 ++++++++++++++++++++++++ drivers/nvdimm/region_devs.c | 19 +++++++++++++++++++ 3 files changed, 44 insertions(+) diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 35dd750..d713bf9 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -154,6 +154,7 @@ struct nd_region { u64 ndr_start; int id, num_lanes, ro, numa_node; void *provider_data; + struct badblocks bb; struct nd_interleave_set *nd_set; struct nd_percpu_lane __percpu *lane; struct nd_mapping mapping[0]; diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c index 8f24177..869a886 100644 --- a/drivers/nvdimm/region.c +++ b/drivers/nvdimm/region.c @@ -14,6 +14,7 @@ #include #include #include +#include "nd-core.h" #include "nd.h" static int nd_region_probe(struct device *dev) @@ -52,6 +53,17 @@ static int nd_region_probe(struct device *dev) if (rc && err && rc == err) return -ENODEV; + if (is_nd_pmem(&nd_region->dev)) { + struct resource ndr_res; + + if (devm_init_badblocks(dev, &nd_region->bb)) + return -ENODEV; + ndr_res.start = nd_region->ndr_start; + ndr_res.end = nd_region->ndr_start + nd_region->ndr_size - 1; + nvdimm_badblocks_populate(nd_region, + &nd_region->bb, &ndr_res); + } + nd_region->btt_seed = nd_btt_create(nd_region); nd_region->pfn_seed = nd_pfn_create(nd_region); nd_region->dax_seed = nd_dax_create(nd_region); @@ -104,6 +116,18 @@ static int child_notify(struct device *dev, void *data) static void nd_region_notify(struct device *dev, enum nvdimm_event event) { + if (event == NVDIMM_REVALIDATE_POISON) { + struct nd_region *nd_region = to_nd_region(dev); + struct resource res; + + if (is_nd_pmem(&nd_region->dev)) { + res.start = nd_region->ndr_start; + res.end = nd_region->ndr_start + + nd_region->ndr_size - 1; + nvdimm_badblocks_populate(nd_region, + &nd_region->bb, &res); + } + } device_for_each_child(dev, &event, child_notify); } diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index 7cd705f..4d6db84 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -448,6 +448,21 @@ static ssize_t read_only_store(struct device *dev, } static DEVICE_ATTR_RW(read_only); +static ssize_t nd_badblocks_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nd_region *nd_region = to_nd_region(dev); + + return badblocks_show(&nd_region->bb, buf, 0); +} +static struct device_attribute dev_attr_nd_badblocks = { + .attr = { + .name = "badblocks", + .mode = S_IRUGO + }, + .show = nd_badblocks_show, +}; + static struct attribute *nd_region_attributes[] = { &dev_attr_size.attr, &dev_attr_nstype.attr, @@ -460,6 +475,7 @@ static struct attribute *nd_region_attributes[] = { &dev_attr_available_size.attr, &dev_attr_namespace_seed.attr, &dev_attr_init_namespaces.attr, + &dev_attr_nd_badblocks.attr, NULL, }; @@ -476,6 +492,9 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n) if (!is_nd_pmem(dev) && a == &dev_attr_dax_seed.attr) return 0; + if (!is_nd_pmem(dev) && a == &dev_attr_nd_badblocks.attr) + return 0; + if (a != &dev_attr_set_cookie.attr && a != &dev_attr_available_size.attr) return a->mode;