[PATCH V3 06/10] virito: add APIs for retrieving vq affinity
From: Ming Lei <hidden>
Date: 2021-07-09 08:11:21
Also in:
linux-nvme, linux-scsi
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
virtio-blk/virtio-scsi needs this API for retrieving vq's affinity. Signed-off-by: Ming Lei <redacted> --- 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)
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2.31.1