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| author | Daniel Wagner <wagi@kernel.org> | 2024-12-02 15:00:11 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-12-23 08:17:23 -0700 |
| commit | c7f63c5d13925c97a4ae9908bd933ab197872161 (patch) | |
| tree | aadd039747f322e24c8531551b4f00b0b0d687e8 /drivers/virtio | |
| parent | 22d813bf00ba7f7a2e027dfc26f60c6ff525ba85 (diff) | |
| download | linux-c7f63c5d13925c97a4ae9908bd933ab197872161.tar.gz linux-c7f63c5d13925c97a4ae9908bd933ab197872161.tar.bz2 linux-c7f63c5d13925c97a4ae9908bd933ab197872161.zip | |
virtio: hookup irq_get_affinity callback
struct bus_type has a new callback for retrieving the IRQ affinity for a
device. Hook this callback up for virtio based devices.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Link: https://lore.kernel.org/r/20241202-refactor-blk-affinity-helpers-v6-3-27211e9c2cd5@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index b9095751e43b..b10ed9f5b543 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -377,6 +377,24 @@ static void virtio_dev_remove(struct device *_d) of_node_put(dev->dev.of_node); } +/* + * virtio_irq_get_affinity - get IRQ affinity mask for device + * @_d: ptr to dev structure + * @irq_vec: interrupt vector number + * + * Return the CPU affinity mask for @_d and @irq_vec. + */ +static const struct cpumask *virtio_irq_get_affinity(struct device *_d, + unsigned int irq_vec) +{ + struct virtio_device *dev = dev_to_virtio(_d); + + if (!dev->config->get_vq_affinity) + return NULL; + + return dev->config->get_vq_affinity(dev, irq_vec); +} + static const struct bus_type virtio_bus = { .name = "virtio", .match = virtio_dev_match, @@ -384,6 +402,7 @@ static const struct bus_type virtio_bus = { .uevent = virtio_uevent, .probe = virtio_dev_probe, .remove = virtio_dev_remove, + .irq_get_affinity = virtio_irq_get_affinity, }; int __register_virtio_driver(struct virtio_driver *driver, struct module *owner) |