diff options
author | Christoph Hellwig <hch@lst.de> | 2020-08-17 16:41:50 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2020-09-11 09:10:17 +0200 |
commit | abdaf11ac18925ce8cc229e62e35b342d548ece2 (patch) | |
tree | c32d6fd1625f6835947ca94130ca0942ef47ad01 /arch/ia64/kernel | |
parent | ef1a85b6ca093abb00fbc38ea55fd9ae08ab05ef (diff) | |
download | lwn-abdaf11ac18925ce8cc229e62e35b342d548ece2.tar.gz lwn-abdaf11ac18925ce8cc229e62e35b342d548ece2.zip |
dma-mapping: add (back) arch_dma_mark_clean for ia64
Add back a hook to optimize dcache flushing after reading executable
code using DMA. This gets ia64 out of the business of pretending to
be dma incoherent just for this optimization.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'arch/ia64/kernel')
-rw-r--r-- | arch/ia64/kernel/dma-mapping.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c index 09ef9ce9988d..f640ed6fe1d5 100644 --- a/arch/ia64/kernel/dma-mapping.c +++ b/arch/ia64/kernel/dma-mapping.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -#include <linux/dma-direct.h> +#include <linux/dma-mapping.h> #include <linux/export.h> /* Set this to 1 if there is a HW IOMMU in the system */ @@ -7,15 +7,3 @@ int iommu_detected __read_mostly; const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); - -void *arch_dma_alloc(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) -{ - return dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs); -} - -void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_addr, unsigned long attrs) -{ - dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs); -} |