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driver core: bus: add irq_get_affinity callback to bus_type

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[ Upstream commit fea4952df0eeec4e1a295ebaac9f61c0065fae87 ]

Introducing a callback in struct bus_type so that a subsystem
can hook up the getters directly. This approach avoids exposing
random getters in any subsystems APIs.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Link: https://lore.kernel.org/r/20241202-refactor-blk-affinity-helpers-v6-1-27211e9c2cd5@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: a2d5a0072235 ("scsi: smartpqi: Use is_kdump_kernel() to check for kdump")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Daniel Wagner
2024-12-02 15:00:09 +01:00
committed by Greg Kroah-Hartman
parent 6884cb2f3b
commit 5ec9039702
1 changed files with 3 additions and 0 deletions
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3
include/linux/device/bus.h
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@@ -48,6 +48,7 @@ struct fwnode_handle;
* will never get called until they do.
* @remove: Called when a device removed from this bus.
* @shutdown: Called at shut-down time to quiesce the device.
* @irq_get_affinity: Get IRQ affinity mask for the device on this bus.
*
* @online: Called to put the device back online (after offlining it).
* @offline: Called to put the device offline for hot-removal. May fail.
@@ -87,6 +88,8 @@ struct bus_type {
void (*sync_state)(struct device *dev);
void (*remove)(struct device *dev);
void (*shutdown)(struct device *dev);
const struct cpumask *(*irq_get_affinity)(struct device *dev,
unsigned int irq_vec);
int (*online)(struct device *dev);
int (*offline)(struct device *dev);