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Sun, 28 Jun 2020 23:01:55 +0000 From: =?UTF-8?q?Matias=20Bj=C3=B8rling?= To: axboe@kernel.dk, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, damien.lemoal@wdc.com, niklas.cassel@wdc.com, hans.holmberg@wdc.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, =?UTF-8?q?Matias=20Bj=C3=B8rling?= Subject: [PATCH 1/2] block: add zone_desc_ext_bytes to sysfs Date: Sun, 28 Jun 2020 23:01:01 +0000 Message-Id: <20200628230102.26990-2-matias.bjorling@wdc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200628230102.26990-1-matias.bjorling@wdc.com> References: <20200628230102.26990-1-matias.bjorling@wdc.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: AM5PR0202CA0018.eurprd02.prod.outlook.com (2603:10a6:203:69::28) To MN2PR04MB6223.namprd04.prod.outlook.com (2603:10b6:208:db::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ninja.localdomain (87.116.37.42) by AM5PR0202CA0018.eurprd02.prod.outlook.com (2603:10a6:203:69::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.21 via Frontend Transport; Sun, 28 Jun 2020 23:01:53 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [87.116.37.42] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 7f585e8f-cffd-45e5-c3e0-08d81bb74050 X-MS-TrafficTypeDiagnostic: MN2PR04MB5965: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: WDCIPOUTBOUND: EOP-TRUE X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-Forefront-PRVS: 0448A97BF2 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: xKR43QHdEXIfKFk0m9qyfVh4SIOxveSCSc4IvOkBJ8hDuSmFKHxJ5zs+v7RTYAU1JzyZheuuP7i3Pi3YHfB8zb0wR4Cu7GIkQplIlZZqfvll4OLoTBQwg/v6QC8ox2AAx9CdeuD0Ti5kHS+05G/MWB0Ooysb0mgZzVjtnPzT8rKkZ72m4pDgmO9oa76BuNXILlC2sTuprv2z7YwC6lxw8ybEhIsGLXBHKudEaigLQEVLSmuizO7aMiRICmzWUdYzvA+pEY/8ZJ0kXPCVC1ZJdnyB6HiyLK1+zjnwpEyEgVYIFoBDIcMDg/iqOy/cHthTe2QJK8FNwn6d5ONWjY0htg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR04MB6223.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(346002)(136003)(366004)(396003)(39850400004)(376002)(6486002)(4326008)(2616005)(956004)(1076003)(86362001)(6636002)(66946007)(316002)(66556008)(66476007)(186003)(6512007)(26005)(6666004)(66574015)(6506007)(8936002)(2906002)(83380400001)(36756003)(5660300002)(52116002)(16526019)(478600001)(8676002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData: JZ8omU0OPk9LQ2SfWDhc0EKtpJ+iY+8yohEIv98iq9WMWU2I9JNzTidvOtvcQb7tWVqDXf6nrihheZhUBSDt9DAGWFnD5tUh/v9ioJTP2s2NBGsCBn58YGiD/9H4Kqt5sh/ezo/HNckCkO/PXFSXnL4rBnQ6+LdQLG4J8Sbgj+xe0Sy+KZDZqoFi/nAIZNu4+KpT7M8bJCvrvrXgDyW9FkJFhGHjw939Ue4hnSo6nz64geKj7N7eVJ0yTYMBBeCTZFWMF/RYlausYV2RLxN8b6sINnz/f04dE2YrdIpohBM3yAeLaD33Qz6wsjJL+8IFE/HkvWRQu45VBzJqjrmqANaFpT5vgT/wxKYT+VkUr7oBMZcv3cfAaRnAATmDdQZjJXWdERNs8qA5px5Xl4qZ4h+n0+/fXQCJqYQ2HOSNcVyzfxx1QYWQDKsuQKdfBl/1KA44ntTsunfzctlAmUuMsjyYXw3hx6G34qISFJ65P54= X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7f585e8f-cffd-45e5-c3e0-08d81bb74050 X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB6223.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jun 2020 23:01:55.0382 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 4d1o6t8W+53hbqD+qznTL+L53KPlmx9pyQJomi2rZRUKGR/l8flWaJiZaSpSoqC/pdlvAuSxAI1tdBjLzUuKrg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5965 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The NVMe Zoned Namespace Command Set adds support for associating data to a zone through the Zone Descriptor Extension feature. The Zone Descriptor Extension size is fixed to a multiple of 64 bytes. A value of zero communicates the feature is not available. A value larger than zero communites the feature is available, and the specified Zone Descriptor Extension size in bytes. The Zone Descriptor Extension feature is only available in the NVMe Zoned Namespaces Command Set. Devices that supports ZAC/ZBC therefore reports this value as zero, where as the NVMe device driver reports the Zone Descriptor Extension size from the specific device. Signed-off-by: Matias Bjørling --- Documentation/block/queue-sysfs.rst | 6 ++++++ block/blk-sysfs.c | 15 ++++++++++++++- drivers/nvme/host/zns.c | 1 + drivers/scsi/sd_zbc.c | 1 + include/linux/blkdev.h | 22 ++++++++++++++++++++++ 5 files changed, 44 insertions(+), 1 deletion(-) diff --git a/Documentation/block/queue-sysfs.rst b/Documentation/block/queue-sysfs.rst index f261a5c84170..c4fa195c87b4 100644 --- a/Documentation/block/queue-sysfs.rst +++ b/Documentation/block/queue-sysfs.rst @@ -265,4 +265,10 @@ devices are described in the ZBC (Zoned Block Commands) and ZAC do not support zone commands, they will be treated as regular block devices and zoned will report "none". +zone_desc_ext_bytes (RO) +------------------------- +This indicates the zone description extension (ZDE) size, in bytes, of a zoned +block device. A value of '0' means that zone description extension is not +supported. + Jens Axboe , February 2009 diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 624bb4d85fc7..0c99454823b7 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -315,6 +315,12 @@ static ssize_t queue_max_active_zones_show(struct request_queue *q, char *page) return queue_var_show(queue_max_active_zones(q), page); } +static ssize_t queue_zone_desc_ext_bytes_show(struct request_queue *q, + char *page) +{ + return queue_var_show(queue_zone_desc_ext_bytes(q), page); +} + static ssize_t queue_nomerges_show(struct request_queue *q, char *page) { return queue_var_show((blk_queue_nomerges(q) << 1) | @@ -687,6 +693,11 @@ static struct queue_sysfs_entry queue_max_active_zones_entry = { .show = queue_max_active_zones_show, }; +static struct queue_sysfs_entry queue_zone_desc_ext_bytes_entry = { + .attr = {.name = "zone_desc_ext_bytes", .mode = 0444 }, + .show = queue_zone_desc_ext_bytes_show, +}; + static struct queue_sysfs_entry queue_nomerges_entry = { .attr = {.name = "nomerges", .mode = 0644 }, .show = queue_nomerges_show, @@ -787,6 +798,7 @@ static struct attribute *queue_attrs[] = { &queue_nr_zones_entry.attr, &queue_max_open_zones_entry.attr, &queue_max_active_zones_entry.attr, + &queue_zone_desc_ext_bytes_entry.attr, &queue_nomerges_entry.attr, &queue_rq_affinity_entry.attr, &queue_iostats_entry.attr, @@ -815,7 +827,8 @@ static umode_t queue_attr_visible(struct kobject *kobj, struct attribute *attr, return 0; if ((attr == &queue_max_open_zones_entry.attr || - attr == &queue_max_active_zones_entry.attr) && + attr == &queue_max_active_zones_entry.attr || + attr == &queue_zone_desc_ext_bytes_entry.attr) && !blk_queue_is_zoned(q)) return 0; diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c index 502070763266..5792d953a8f3 100644 --- a/drivers/nvme/host/zns.c +++ b/drivers/nvme/host/zns.c @@ -84,6 +84,7 @@ int nvme_update_zone_info(struct gendisk *disk, struct nvme_ns *ns, blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q); blk_queue_max_open_zones(q, le32_to_cpu(id->mor) + 1); blk_queue_max_active_zones(q, le32_to_cpu(id->mar) + 1); + blk_queue_zone_desc_ext_bytes(q, id->lbafe[lbaf].zdes << 6); free_data: kfree(id); return status; diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index d8b2c49d645b..a4b6d6cf5457 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -722,6 +722,7 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf) else blk_queue_max_open_zones(q, sdkp->zones_max_open); blk_queue_max_active_zones(q, 0); + blk_queue_zone_desc_ext_bytes(q, 0); nr_zones = round_up(sdkp->capacity, zone_blocks) >> ilog2(zone_blocks); /* READ16/WRITE16 is mandatory for ZBC disks */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 3776140f8f20..2ed55055f68d 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -522,6 +522,7 @@ struct request_queue { unsigned long *seq_zones_wlock; unsigned int max_open_zones; unsigned int max_active_zones; + unsigned int zone_desc_ext_bytes; #endif /* CONFIG_BLK_DEV_ZONED */ /* @@ -753,6 +754,18 @@ static inline unsigned int queue_max_active_zones(const struct request_queue *q) { return q->max_active_zones; } + +static inline void blk_queue_zone_desc_ext_bytes(struct request_queue *q, + unsigned int zone_desc_ext_bytes) +{ + q->zone_desc_ext_bytes = zone_desc_ext_bytes; +} + +static inline unsigned int queue_zone_desc_ext_bytes( + const struct request_queue *q) +{ + return q->zone_desc_ext_bytes; +} #else /* CONFIG_BLK_DEV_ZONED */ static inline unsigned int blk_queue_nr_zones(struct request_queue *q) { @@ -784,6 +797,15 @@ static inline unsigned int queue_max_active_zones(const struct request_queue *q) { return 0; } +static inline void blk_queue_zone_desc_ext_bytes(struct request_queue *q, + unsigned int zone_desc_ext_bytes) +{ +} +static inline unsigned int queue_zone_desc_ext_bytes( + const struct request_queue *q) +{ + return 0; +} #endif /* CONFIG_BLK_DEV_ZONED */ static inline bool rq_is_sync(struct request *rq) -- 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9B5CC433E2 for ; Sun, 28 Jun 2020 23:02:17 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 65B1B2076E for ; Sun, 28 Jun 2020 23:02:17 +0000 (UTC) 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