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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 262D5E7717F for ; Tue, 10 Dec 2024 19:58:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ybfWNtKJn5SwV6Ot6H1S9ZsFtg32uyGww7WuNidgT5k=; b=5C2eRHcFm23unMz6iJvK8sphTA qg3ONTQ+1evVZVmxz4I9gHZ4rZDEoO2nuNHwv6M5fIvNXoMs//h4DU5Ee2Uhf8JOKpwKmOyOOYPHT xp+GyAyKCiDyT1EEt5dt92auG0mXRhT06fZKlseI4xVFzWwYeq7yR6VnpQce1Vq7fRrDX+ydqklZ+ CF0k77dTAzDVRGoIh6tcv2M9t+X+/VMnxvaF3WccRwg4dAHhhT0cUfZokW2Krts/H74XP7Bg09lw6 zA9NhvzOWpaUQJUhw0OvqzEmDVRXRwZo0qYyoO6VqHTAcSOeAcRWjJKdrJYeCTa+aO0XTo9kUqZrf z5/AhjNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tL6Nd-0000000CahY-2M6X; Tue, 10 Dec 2024 19:58:49 +0000 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tL6Nb-0000000CagK-1rsV for linux-nvme@lists.infradead.org; Tue, 10 Dec 2024 19:58:48 +0000 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4BAIaXEI019499 for ; Tue, 10 Dec 2024 11:58:47 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=s2048-2021-q4; bh=ybfWNtKJn5SwV6Ot6H1S9ZsFtg32uyGww7WuNidgT5k=; b=FPsbehzIzKtN dFVWJPGUNmPa93p9SFJNEy9yhLQ953Y0X9uKAwbSZ2bDuy+rRem5Ow6XkDm/c4me 3O5hOY9zA7aKnTdreehaOs6PiV0pSVpstpSKkUTLMcqWtzve5zaq1Igb6M7TcRo3 tLKm7Wg68UpOYBClUqg2KEL+rCnC3cm/lz78371DqBJjYqkAE92sIhBeEtvEVUzn dKiuxQKXDeqECLrnaoUhuhIyJH3aLVx8HE8FQWA837qZ6s5ASyUWDiScyDTt2O4a l7B/H97hvprqrxAqjhhU+HkI/s+y/hqclCa6uAedgr1bDIQN0ikIHbxPlZ83kVnd Mw2+OZDKgg== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 43eu2s8mmk-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 10 Dec 2024 11:58:46 -0800 (PST) Received: from twshared60378.16.frc2.facebook.com (2620:10d:c0a8:1c::1b) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Tue, 10 Dec 2024 19:58:45 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id 6D40415D5C7C0; Tue, 10 Dec 2024 11:48:08 -0800 (PST) From: Keith Busch To: , , , , , CC: , , , , Keith Busch , Hannes Reinecke , Nitesh Shetty Subject: [PATCHv13 03/11] block: introduce max_write_streams queue limit Date: Tue, 10 Dec 2024 11:47:14 -0800 Message-ID: <20241210194722.1905732-4-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241210194722.1905732-1-kbusch@meta.com> References: <20241210194722.1905732-1-kbusch@meta.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: -J8OGE-vh2qOgpYXAT1jllpQzC6tjHjD X-Proofpoint-ORIG-GUID: -J8OGE-vh2qOgpYXAT1jllpQzC6tjHjD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-05_03,2024-10-04_01,2024-09-30_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241210_115847_487487_C59F882A X-CRM114-Status: GOOD ( 11.96 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Keith Busch Drivers with hardware that support write streams need a way to export how many are available so applications can generically query this. Reviewed-by: Hannes Reinecke Reviewed-by: Nitesh Shetty Signed-off-by: Keith Busch [hch: renamed hints to streams, removed stacking] Signed-off-by: Christoph Hellwig --- Documentation/ABI/stable/sysfs-block | 7 +++++++ block/blk-sysfs.c | 3 +++ include/linux/blkdev.h | 9 +++++++++ 3 files changed, 19 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/sta= ble/sysfs-block index 0cceb2badc836..f67139b8b8eff 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -506,6 +506,13 @@ Description: [RO] Maximum size in bytes of a single element in a DMA scatter/gather list. =20 +What: /sys/block//queue/max_write_streams +Date: November 2024 +Contact: linux-block@vger.kernel.org +Description: + [RO] Maximum number of write streams supported, 0 if not + supported. If supported, valid values are 1 through + max_write_streams, inclusive. =20 What: /sys/block//queue/max_segments Date: March 2010 diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 4241aea84161c..c514c0cb5e93c 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -104,6 +104,7 @@ QUEUE_SYSFS_LIMIT_SHOW(max_segments) QUEUE_SYSFS_LIMIT_SHOW(max_discard_segments) QUEUE_SYSFS_LIMIT_SHOW(max_integrity_segments) QUEUE_SYSFS_LIMIT_SHOW(max_segment_size) +QUEUE_SYSFS_LIMIT_SHOW(max_write_streams) QUEUE_SYSFS_LIMIT_SHOW(logical_block_size) QUEUE_SYSFS_LIMIT_SHOW(physical_block_size) QUEUE_SYSFS_LIMIT_SHOW(chunk_sectors) @@ -446,6 +447,7 @@ QUEUE_RO_ENTRY(queue_max_hw_sectors, "max_hw_sectors_= kb"); QUEUE_RO_ENTRY(queue_max_segments, "max_segments"); QUEUE_RO_ENTRY(queue_max_integrity_segments, "max_integrity_segments"); QUEUE_RO_ENTRY(queue_max_segment_size, "max_segment_size"); +QUEUE_RO_ENTRY(queue_max_write_streams, "max_write_streams"); QUEUE_RW_LOAD_MODULE_ENTRY(elv_iosched, "scheduler"); =20 QUEUE_RO_ENTRY(queue_logical_block_size, "logical_block_size"); @@ -580,6 +582,7 @@ static struct attribute *queue_attrs[] =3D { &queue_max_discard_segments_entry.attr, &queue_max_integrity_segments_entry.attr, &queue_max_segment_size_entry.attr, + &queue_max_write_streams_entry.attr, &queue_hw_sector_size_entry.attr, &queue_logical_block_size_entry.attr, &queue_physical_block_size_entry.attr, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 08a727b408164..ce2c3ddda2411 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -399,6 +399,8 @@ struct queue_limits { unsigned short max_integrity_segments; unsigned short max_discard_segments; =20 + unsigned short max_write_streams; + unsigned int max_open_zones; unsigned int max_active_zones; =20 @@ -1240,6 +1242,13 @@ static inline unsigned int bdev_max_segments(struc= t block_device *bdev) return queue_max_segments(bdev_get_queue(bdev)); } =20 +static inline unsigned short bdev_max_write_streams(struct block_device = *bdev) +{ + if (bdev_is_partition(bdev)) + return 0; + return bdev_limits(bdev)->max_write_streams; +} + static inline unsigned queue_logical_block_size(const struct request_que= ue *q) { return q->limits.logical_block_size; --=20 2.43.5