dma-iommu: use static-key to minimize the impact in the fast-path

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Let's move out the is_kdump_kernel() check from iommu_dma_deferred_attach()
to iommu_dma_init(), and use the static-key in the fast-path to minimize
the impact in the normal case.

Co-developed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20210126115337.20068-2-lijiang@redhat.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Lianbo Jiang 2021-01-26 19:53:36 +08:00 • committed by Joerg Roedel

parent 262948f8ba

commit a8e8af35c9

1 changed files with 11 additions and 6 deletions

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drivers/iommu/dma-iommu.c

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