linux-4.4.1/dma_alloc_from_contiguous()
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開始行:
*参照元 [#h74aba29]
#backlinks
*説明 [#z6a2ecec]
-パス: 複数あり
--CONFIG_DMA_CMA 有効: [[linux-4.4.1/drivers/base/dma-con...
--CONFIG_DMA_CMA 無効: [[linux-4.4.1/include/linux/dma-co...
--[[linux-4.4.1/CONFIG_DMA_CMA]]
-FIXME: これは何？
--説明
**引数 [#fef35a2d]
-struct device *dev
--
--[[linux-4.4.1/device]]
-size_t count
--
-unsigned int align
--
**返り値 [#kebde8db]
-struct page *
--失敗したら NULL を返す。
--[[linux-4.4.1/page]]
**参考 [#pc46529e]
*実装 [#y1bec96f]
**CONFIG_DMA_CMA 有効: drivers/base/dma-contiguous.c [#m7...
/**
* dma_alloc_from_contiguous() - allocate pages from con...
* @dev: Pointer to device for which the allocation is...
* @count: Requested number of pages.
* @align: Requested alignment of pages (in PAGE_SIZE or...
*
* This function allocates memory buffer for specified d...
* device specific contiguous memory area if available o...
* global one. Requires architecture specific dev_get_cm...
* function.
*/
struct page *dma_alloc_from_contiguous(struct device *de...
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
align = CONFIG_CMA_ALIGNMENT;
-
--[[linux-4.4.1/CONFIG_CMA_ALIGNMENT]]
return cma_alloc(dev_get_cma_area(dev), count, a...
-
--[[linux-4.4.1/cma_alloc()]]
--[[linux-4.4.1/dev_get_cma_area()]]
}
**CONFIG_DMA_CMA 無効: include/linux/dma-contiguous.h [#i...
static inline
struct page *dma_alloc_from_contiguous(struct device *de...
unsigned int order)
{
return NULL;
}
-常に失敗する。
*コメント [#ld44d47d]
終了行:
*参照元 [#h74aba29]
#backlinks
*説明 [#z6a2ecec]
-パス: 複数あり
--CONFIG_DMA_CMA 有効: [[linux-4.4.1/drivers/base/dma-con...
--CONFIG_DMA_CMA 無効: [[linux-4.4.1/include/linux/dma-co...
--[[linux-4.4.1/CONFIG_DMA_CMA]]
-FIXME: これは何？
--説明
**引数 [#fef35a2d]
-struct device *dev
--
--[[linux-4.4.1/device]]
-size_t count
--
-unsigned int align
--
**返り値 [#kebde8db]
-struct page *
--失敗したら NULL を返す。
--[[linux-4.4.1/page]]
**参考 [#pc46529e]
*実装 [#y1bec96f]
**CONFIG_DMA_CMA 有効: drivers/base/dma-contiguous.c [#m7...
/**
* dma_alloc_from_contiguous() - allocate pages from con...
* @dev: Pointer to device for which the allocation is...
* @count: Requested number of pages.
* @align: Requested alignment of pages (in PAGE_SIZE or...
*
* This function allocates memory buffer for specified d...
* device specific contiguous memory area if available o...
* global one. Requires architecture specific dev_get_cm...
* function.
*/
struct page *dma_alloc_from_contiguous(struct device *de...
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
align = CONFIG_CMA_ALIGNMENT;
-
--[[linux-4.4.1/CONFIG_CMA_ALIGNMENT]]
return cma_alloc(dev_get_cma_area(dev), count, a...
-
--[[linux-4.4.1/cma_alloc()]]
--[[linux-4.4.1/dev_get_cma_area()]]
}
**CONFIG_DMA_CMA 無効: include/linux/dma-contiguous.h [#i...
static inline
struct page *dma_alloc_from_contiguous(struct device *de...
unsigned int order)
{
return NULL;
}
-常に失敗する。
*コメント [#ld44d47d]
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