[PATCH v12 01/13] iova: Export alloc_iova_fast() and free_iova_fast()
flat view
STALE1753d
SUPERSEDED: 2 (1M)
From: Xie Yongji <hidden>
Date: 2021-08-30 14:22:03
Also in:
kvm, linux-fsdevel, linux-iommu, lkml
Subsystem:
iommu dma-api layer, iommu subsystem, the rest · Maintainers:
Robin Murphy, Joerg Roedel, Will Deacon, Linus Torvalds
Status: Superseded by v13 (posted 2021-08-31). [go to v13]
Revision v12 (13 revisions archived); 2 review trailers (1 from subsystem maintainers).
Revisions (13)
- rfc
- v2 [diff against previous]
- v3 [diff against previous]
- v4 [diff against previous]
- v5 [diff against previous]
- v6 [diff against previous]
- v7 [diff against previous]
- v8 [diff against previous]
- v9 [diff against previous]
- v10 [diff against previous]
- v11 [diff against previous]
- v12 current [diff against previous]
- v13 [diff against previous]
Export alloc_iova_fast() and free_iova_fast() so that
some modules can make use of the per-CPU cache to get
rid of rbtree spinlock in alloc_iova() and free_iova()
during IOVA allocation.
Signed-off-by: Xie Yongji <redacted>
Acked-by: Jason Wang <redacted>
Acked-by: Will Deacon <will@kernel.org>
---
drivers/iommu/iova.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
index b6cf5f16123b..3941ed6bb99b 100644
--- a/drivers/iommu/iova.c
+++ b/drivers/iommu/iova.c@@ -521,6 +521,7 @@ alloc_iova_fast(struct iova_domain *iovad, unsigned long size, return new_iova->pfn_lo; } +EXPORT_SYMBOL_GPL(alloc_iova_fast); /** * free_iova_fast - free iova pfn range into rcache
@@ -538,6 +539,7 @@ free_iova_fast(struct iova_domain *iovad, unsigned long pfn, unsigned long size) free_iova(iovad, pfn); } +EXPORT_SYMBOL_GPL(free_iova_fast); #define fq_ring_for_each(i, fq) \ for ((i) = (fq)->head; (i) != (fq)->tail; (i) = ((i) + 1) % IOVA_FQ_SIZE)
--
2.11.0