iommu/iova: Simplify domain destruction

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All put_iova_domain() should have to worry about is freeing memory - by
that point the domain must no longer be live, so the act of cleaning up
doesn't need to be concurrency-safe or maintain the rbtree in a
self-consistent state. There's no need to waste time with locking or
emptying the rcache magazines, and we can just use the postorder
traversal helper to clear out the remaining rbtree entries in-place.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Robin Murphy 2017-09-19 14:48:39 +01:00 • committed by Joerg Roedel

parent 973f5fbedb

commit 7595dc588a

1 changed files with 9 additions and 39 deletions

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drivers/iommu/iova.c

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