From patchwork Tue Jun 11 05:19:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13693114 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.subspace.kernel.org (Postfix) with ESMTPS id D7A7817D892; Tue, 11 Jun 2024 05:21:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718083272; cv=none; b=dFNn8FY+DMCXD2Ry5/tLj/10DOKrsUrx6YZO29ygUCMg9hJfXe/4X11VTHpigLTQVXUbJb9s/CJ/N6tKWx5kUb1pL5K8j90n0MdxwYYZ30gPja57oeNcvpCoPHL5Pqo3r9H6SXYwAglxf6xgiaNY5Aap0c8YAkt+W0a5sK8uDEc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718083272; c=relaxed/simple; bh=FpARZe7L39Sbv996iw2RhHkNeRu1cgq9hUY+m3Zr+LU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kTR1ax4cU0yeAv+h7f7N4WW7cHnGmCWT+n4qe0fgPz1DsZlvrEXX8QJfYBySpyuFtpQCyWnKtjQ1t6bhXSDRbgdpFmvT+uCT+qYZTwUKBfecVf/ax/sOgHCh9CwQuLxcYWWRfdtT89YwnBW0VKMc9cdm5HVGpvfqik+GWShZbx0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=f1hZ2SuH; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="f1hZ2SuH" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=MPwremY8Q7NX1Ef8RTwP3wepSQ5hhCHGmRWL/QC9GrI=; b=f1hZ2SuHKaMYNYDlKddtsMrEj4 HhJ0iwXM6G2h13fzU48w2Wp1cg9nk2YZ6gpAuUou9ff1GYduJZ0WfzXf3shKgk6wyYrmmiGL51jtj XbNogudD9e403EfmIZRu+cHyfIbgFlIIY5jXRlKtfcYVvelaQBaiB5rariZryMc+5ShP0wImrZGUf HwPzDYeZDkEqyQ9JjhzMhbUEJgoB0ykUCUe71NZZ4iM8X9lzH0xXrhhtc3ukr1Zq2/qge7T4ojgtC PPW5bNUe9scd9Xqt6YR7LEPh7UJ5/vAECPRKTcBRuA2XxgnZmYKTh8weAU8h6E46qMGktD9WSYAY8 XOMueOlQ==; Received: from 2a02-8389-2341-5b80-cdb4-8e7d-405d-6b77.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:cdb4:8e7d:405d:6b77] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sGtw4-00000007Rfx-3Hsc; Tue, 11 Jun 2024 05:20:45 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Geert Uytterhoeven , Richard Weinberger , Philipp Reisner , Lars Ellenberg , =?utf-8?q?Christoph_B=C3=B6hmwa?= =?utf-8?q?lder?= , Josef Bacik , Ming Lei , "Michael S. Tsirkin" , Jason Wang , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Vineeth Vijayan , "Martin K. Petersen" , linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org Subject: [PATCH 24/26] block: move the pci_p2pdma flag to queue_limits Date: Tue, 11 Jun 2024 07:19:24 +0200 Message-ID: <20240611051929.513387-25-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240611051929.513387-1-hch@lst.de> References: <20240611051929.513387-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Move the pci_p2pdma flag into the queue_limits feature field so that it can be set atomically and all I/O is frozen when changing the flag. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal --- block/blk-mq-debugfs.c | 1 - drivers/nvme/host/core.c | 8 +++----- include/linux/blkdev.h | 7 ++++--- 3 files changed, 7 insertions(+), 9 deletions(-) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index f2fd72f4414ae8..8b5a68861c119b 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -90,7 +90,6 @@ static const char *const blk_queue_flag_name[] = { QUEUE_FLAG_NAME(STATS), QUEUE_FLAG_NAME(REGISTERED), QUEUE_FLAG_NAME(QUIESCED), - QUEUE_FLAG_NAME(PCI_P2PDMA), QUEUE_FLAG_NAME(RQ_ALLOC_TIME), QUEUE_FLAG_NAME(HCTX_ACTIVE), QUEUE_FLAG_NAME(SQ_SCHED), diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 5ecf762d7c8837..31e752e8d632cd 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3735,6 +3735,9 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, struct nvme_ns_info *info) if (ctrl->opts && ctrl->opts->data_digest) lim.features |= BLK_FEAT_STABLE_WRITES; + if (ctrl->ops->supports_pci_p2pdma && + ctrl->ops->supports_pci_p2pdma(ctrl)) + lim.features |= BLK_FEAT_PCI_P2PDMA; disk = blk_mq_alloc_disk(ctrl->tagset, &lim, ns); if (IS_ERR(disk)) @@ -3744,11 +3747,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, struct nvme_ns_info *info) ns->disk = disk; ns->queue = disk->queue; - - if (ctrl->ops->supports_pci_p2pdma && - ctrl->ops->supports_pci_p2pdma(ctrl)) - blk_queue_flag_set(QUEUE_FLAG_PCI_P2PDMA, ns->queue); - ns->ctrl = ctrl; kref_init(&ns->kref); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ffb7a42871b4ed..cc4f6e64e8e3f5 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -319,6 +319,9 @@ enum { /* supports Zone Reset All */ BLK_FEAT_ZONE_RESETALL = (1u << 11), + + /* supports PCI(e) p2p requests */ + BLK_FEAT_PCI_P2PDMA = (1u << 12), }; /* @@ -588,7 +591,6 @@ struct request_queue { #define QUEUE_FLAG_STATS 20 /* track IO start and completion times */ #define QUEUE_FLAG_REGISTERED 22 /* queue has been registered to a disk */ #define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */ -#define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */ #define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */ #define QUEUE_FLAG_HCTX_ACTIVE 28 /* at least one blk-mq hctx is active */ #define QUEUE_FLAG_SQ_SCHED 30 /* single queue style io dispatch */ @@ -611,8 +613,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_zone_resetall(q) \ ((q)->limits.features & BLK_FEAT_ZONE_RESETALL) #define blk_queue_dax(q) ((q)->limits.features & BLK_FEAT_DAX) -#define blk_queue_pci_p2pdma(q) \ - test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags) +#define blk_queue_pci_p2pdma(q) ((q)->limits.features & BLK_FEAT_PCI_P2PDMA) #ifdef CONFIG_BLK_RQ_ALLOC_TIME #define blk_queue_rq_alloc_time(q) \ test_bit(QUEUE_FLAG_RQ_ALLOC_TIME, &(q)->queue_flags)