AcoSail/kernel_optimize_test
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dma-mapping: remove <asm/dma-contiguous.h>

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Just provide a weak default definition of dma_contiguous_early_fixup and
let arm override it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2020-09-11 11:04:43 +02:00
parent 0b1abd1fb7
commit 5db5d93089
6 changed files with 7 additions and 28 deletions
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15
arch/arm/include/asm/dma-contiguous.h
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@ -1,15 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ASMARM_DMA_CONTIGUOUS_H
#define ASMARM_DMA_CONTIGUOUS_H
#ifdef __KERNEL__
#ifdef CONFIG_DMA_CMA
#include <linux/types.h>
void dma_contiguous_early_fixup(phys_addr_t base, unsigned long size);
#endif
#endif
#endif

1
arch/arm/mm/dma-mapping.c
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@ -34,7 +34,6 @@
#include <asm/dma-iommu.h>
#include <asm/mach/map.h>
#include <asm/system_info.h>
#include <asm/dma-contiguous.h>
#include <xen/swiotlb-xen.h>
#include "dma.h"

1
include/asm-generic/Kbuild
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@ -16,7 +16,6 @@ mandatory-y += current.h
mandatory-y += delay.h
mandatory-y += device.h
mandatory-y += div64.h
mandatory-y += dma-contiguous.h
mandatory-y += dma-mapping.h
mandatory-y += dma.h
mandatory-y += emergency-restart.h

10
include/asm-generic/dma-contiguous.h
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@ -1,10 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_DMA_CONTIGUOUS_H
#define _ASM_GENERIC_DMA_CONTIGUOUS_H
#include <linux/types.h>
static inline void
dma_contiguous_early_fixup(phys_addr_t base, unsigned long size) { }
#endif

2
include/linux/dma-map-ops.h
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@ -116,6 +116,8 @@ bool dma_release_from_contiguous(struct device *dev, struct page *pages,
int count);
struct page *dma_alloc_contiguous(struct device *dev, size_t size, gfp_t gfp);
void dma_free_contiguous(struct device *dev, struct page *page, size_t size);
void dma_contiguous_early_fixup(phys_addr_t base, unsigned long size);
#else /* CONFIG_DMA_CMA */
static inline struct cma *dev_get_cma_area(struct device *dev)
{

6
kernel/dma/contiguous.c
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@ -44,7 +44,6 @@
#endif
#include <asm/page.h>
#include <asm/dma-contiguous.h>
#include <linux/memblock.h>
#include <linux/err.h>
@ -212,6 +211,11 @@ void __init dma_contiguous_reserve(phys_addr_t limit)
}
}
void __weak
dma_contiguous_early_fixup(phys_addr_t base, unsigned long size)
{
}
/**
* dma_contiguous_reserve_area() - reserve custom contiguous area
* @size: Size of the reserved area (in bytes),