iommu/amd: Use atomic64_inc_return() in iommu.c

Browse source

Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Will Deacon <will@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20241007084356.47799-1-ubizjak@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

...

This commit is contained in:

Uros Bizjak 2024-10-07 10:43:31 +02:00 • committed by Joerg Roedel

parent 8e929cb546

commit 5ce73c524f

1 changed files with 2 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/iommu/amd/iommu.c

View file