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From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
	linux-scsi@vger.kernel.org
Cc: Sagi Grimberg <sagi@grimberg.me>, Daniel Wagner <dwagner@suse.de>,
	Wen Xiong <wenxiong@us.ibm.com>,
	John Garry <john.garry@huawei.com>,
	Hannes Reinecke <hare@suse.de>, Keith Busch <kbusch@kernel.org>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	Ming Lei <ming.lei@redhat.com>
Subject: [PATCH V3 06/10] virito: add APIs for retrieving vq affinity
Date: Fri,  9 Jul 2021 16:10:01 +0800	[thread overview]
Message-ID: <20210709081005.421340-7-ming.lei@redhat.com> (raw)
In-Reply-To: <20210709081005.421340-1-ming.lei@redhat.com>

virtio-blk/virtio-scsi needs this API for retrieving vq's affinity.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/virtio/virtio.c | 10 ++++++++++
 include/linux/virtio.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 4b15c00c0a0a..ab593a8350d4 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -448,6 +448,16 @@ int virtio_device_restore(struct virtio_device *dev)
 EXPORT_SYMBOL_GPL(virtio_device_restore);
 #endif
 
+const struct cpumask *virtio_get_vq_affinity(struct virtio_device *dev,
+		int index)
+{
+	if (!dev->config->get_vq_affinity)
+		return NULL;
+
+	return dev->config->get_vq_affinity(dev, index);
+}
+EXPORT_SYMBOL_GPL(virtio_get_vq_affinity);
+
 static int virtio_init(void)
 {
 	if (bus_register(&virtio_bus) != 0)
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index b1894e0323fa..99fbba9981cc 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -139,6 +139,8 @@ int virtio_device_restore(struct virtio_device *dev);
 #endif
 
 size_t virtio_max_dma_size(struct virtio_device *vdev);
+const struct cpumask *virtio_get_vq_affinity(struct virtio_device *dev,
+		int index);
 
 #define virtio_device_for_each_vq(vdev, vq) \
 	list_for_each_entry(vq, &vdev->vqs, list)
-- 
2.31.1


WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
	linux-scsi@vger.kernel.org
Cc: Sagi Grimberg <sagi@grimberg.me>, Daniel Wagner <dwagner@suse.de>,
	Wen Xiong <wenxiong@us.ibm.com>,
	John Garry <john.garry@huawei.com>,
	Hannes Reinecke <hare@suse.de>, Keith Busch <kbusch@kernel.org>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	Ming Lei <ming.lei@redhat.com>
Subject: [PATCH V3 06/10] virito: add APIs for retrieving vq affinity
Date: Fri,  9 Jul 2021 16:10:01 +0800	[thread overview]
Message-ID: <20210709081005.421340-7-ming.lei@redhat.com> (raw)
In-Reply-To: <20210709081005.421340-1-ming.lei@redhat.com>

virtio-blk/virtio-scsi needs this API for retrieving vq's affinity.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/virtio/virtio.c | 10 ++++++++++
 include/linux/virtio.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 4b15c00c0a0a..ab593a8350d4 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -448,6 +448,16 @@ int virtio_device_restore(struct virtio_device *dev)
 EXPORT_SYMBOL_GPL(virtio_device_restore);
 #endif
 
+const struct cpumask *virtio_get_vq_affinity(struct virtio_device *dev,
+		int index)
+{
+	if (!dev->config->get_vq_affinity)
+		return NULL;
+
+	return dev->config->get_vq_affinity(dev, index);
+}
+EXPORT_SYMBOL_GPL(virtio_get_vq_affinity);
+
 static int virtio_init(void)
 {
 	if (bus_register(&virtio_bus) != 0)
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index b1894e0323fa..99fbba9981cc 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -139,6 +139,8 @@ int virtio_device_restore(struct virtio_device *dev);
 #endif
 
 size_t virtio_max_dma_size(struct virtio_device *vdev);
+const struct cpumask *virtio_get_vq_affinity(struct virtio_device *dev,
+		int index);
 
 #define virtio_device_for_each_vq(vdev, vq) \
 	list_for_each_entry(vq, &vdev->vqs, list)
-- 
2.31.1


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  parent reply	other threads:[~2021-07-09  8:11 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-09  8:09 [PATCH V3 0/10] blk-mq: cleanup map queues & fix blk_mq_alloc_request_hctx Ming Lei
2021-07-09  8:09 ` Ming Lei
2021-07-09  8:09 ` [PATCH V3 01/10] blk-mq: rename blk-mq-cpumap.c as blk-mq-map.c Ming Lei
2021-07-09  8:09   ` Ming Lei
2021-07-12  7:28   ` Christoph Hellwig
2021-07-12  7:28     ` Christoph Hellwig
2021-07-09  8:09 ` [PATCH V3 02/10] blk-mq: Introduce blk_mq_dev_map_queues Ming Lei
2021-07-09  8:09   ` Ming Lei
2021-07-09  8:25   ` Daniel Wagner
2021-07-09  8:25     ` Daniel Wagner
2021-07-12  7:32   ` Christoph Hellwig
2021-07-12  7:32     ` Christoph Hellwig
2021-07-09  8:09 ` [PATCH V3 03/10] blk-mq: pass use managed irq info to blk_mq_dev_map_queues Ming Lei
2021-07-09  8:09   ` Ming Lei
2021-07-12  7:35   ` Christoph Hellwig
2021-07-12  7:35     ` Christoph Hellwig
2021-07-09  8:09 ` [PATCH V3 04/10] scsi: replace blk_mq_pci_map_queues with blk_mq_dev_map_queues Ming Lei
2021-07-09  8:09   ` Ming Lei
2021-07-09 10:58   ` kernel test robot
2021-07-09 10:58     ` kernel test robot
2021-07-09 10:58     ` kernel test robot
2021-07-09 11:30   ` kernel test robot
2021-07-09 11:30     ` kernel test robot
2021-07-09 11:30     ` kernel test robot
2021-07-09 12:05   ` kernel test robot
2021-07-09 12:05     ` kernel test robot
2021-07-09 12:05     ` kernel test robot
2021-07-09  8:10 ` [PATCH V3 05/10] nvme: " Ming Lei
2021-07-09  8:10   ` Ming Lei
2021-07-09  8:10 ` Ming Lei [this message]
2021-07-09  8:10   ` [PATCH V3 06/10] virito: add APIs for retrieving vq affinity Ming Lei
2021-07-09  8:10 ` [PATCH V3 07/10] virtio: blk/scsi: replace blk_mq_virtio_map_queues with blk_mq_dev_map_queues Ming Lei
2021-07-09  8:10   ` Ming Lei
2021-07-09  8:10 ` [PATCH V3 08/10] nvme: rdma: replace blk_mq_rdma_map_queues " Ming Lei
2021-07-09  8:10   ` Ming Lei
2021-07-09  8:10 ` [PATCH V3 09/10] blk-mq: remove map queue helpers for pci, rdma and virtio Ming Lei
2021-07-09  8:10   ` Ming Lei
2021-07-09  8:10 ` [PATCH V3 10/10] blk-mq: don't deactivate hctx if managed irq isn't used Ming Lei
2021-07-09  8:10   ` Ming Lei

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