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x86: Deinline dma_alloc_attrs()

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Reduces kernel size by 68739 bytes on allyesconfig build:

    text     data      bss       dec     hex filename
82662736 22255384 20627456 125545576 77bac68 vmlinux0
82594029 22255352 20627456 125476837 77a9fe5 vmlinux1

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Don Dutile <ddutile@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1428926075-28796-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Denys Vlasenko 2015-04-13 13:54:32 +02:00 • committed by Thomas Gleixner
parent c07e5a542e
commit 0c7965ff22
2 changed files with 30 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

28
arch/x86/include/asm/dma-mapping.h
View file

@ -127,33 +127,9 @@ static inline gfp_t dma_alloc_coherent_gfp_flags(struct device *dev, gfp_t gfp)
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void * void *
dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, struct dma_attrs *attrs) gfp_t gfp, struct dma_attrs *attrs);
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
return memory;
if (!dev)
dev = &x86_dma_fallback_dev;
if (!is_device_dma_capable(dev))
return NULL;
if (!ops->alloc)
return NULL;
memory = ops->alloc(dev, size, dma_handle,
dma_alloc_coherent_gfp_flags(dev, gfp), attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)

28
arch/x86/kernel/pci-dma.c
View file

@ -140,6 +140,34 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
free_pages((unsigned long)vaddr, get_order(size)); free_pages((unsigned long)vaddr, get_order(size));
} }
void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
return memory;
if (!dev)
dev = &x86_dma_fallback_dev;
if (!is_device_dma_capable(dev))
return NULL;
if (!ops->alloc)
return NULL;
memory = ops->alloc(dev, size, dma_handle,
dma_alloc_coherent_gfp_flags(dev, gfp), attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
EXPORT_SYMBOL(dma_alloc_attrs);
/* /*
* See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel * See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel
* parameter documentation. * parameter documentation.