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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-25 07:57:02 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 09:43:48 (GMT) |
| commit | 5bc23d32d86a132b5636a48dca0fa2528ef69ff9 (patch) | |
| tree | b23c8c9ad3693e39e42b2fb389aab037b14ed9a0 /arch/arm/mm/vmregion.h | |
| parent | d746196361c9c635128249bb6cf13e709ae6abe1 (diff) | |
| download | linux-5bc23d32d86a132b5636a48dca0fa2528ef69ff9.tar.xz | |
ARM: DMA coherent allocator: align remapped addresses
The DMA coherent remap area is used to provide an uncached mapping
of memory for coherency with DMA engines. Currently, we look for
any free hole which our allocation will fit in with page alignment.
However, this can lead to fragmentation of the area, and allows small
allocations to cross L1 entry boundaries. This is undesirable as we
want to move towards allocating sections of memory.
Align allocations according to the size, limiting the alignment between
the page and section sizes.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/vmregion.h')
| -rw-r--r-- | arch/arm/mm/vmregion.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/vmregion.h b/arch/arm/mm/vmregion.h index 6b2cdbd..15e9f04 100644 --- a/arch/arm/mm/vmregion.h +++ b/arch/arm/mm/vmregion.h @@ -21,7 +21,7 @@ struct arm_vmregion { int vm_active; }; -struct arm_vmregion *arm_vmregion_alloc(struct arm_vmregion_head *, size_t, gfp_t); +struct arm_vmregion *arm_vmregion_alloc(struct arm_vmregion_head *, size_t, size_t, gfp_t); struct arm_vmregion *arm_vmregion_find(struct arm_vmregion_head *, unsigned long); struct arm_vmregion *arm_vmregion_find_remove(struct arm_vmregion_head *, unsigned long); void arm_vmregion_free(struct arm_vmregion_head *, struct arm_vmregion *); |