dma_alloc_wc

函数名称：dma_alloc_wc

函数原型：static inline void *dma_alloc_wc(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t gfp)

返回类型：void

参数：

类型	参数	名称
struct device *	dev
size_t	size
dma_addr_t *	dma_addr
gfp_t	gfp

781

attrs等于DMA_ATTR_WRITE_COMBINE: Specifies that writes to the mapping may be* buffered to improve performance.

783

如果gfp按位与DOC: Action modifiers* Action modifiers* ~~~~~~~~~~~~~~~~* %__GFP_NOWARN suppresses allocation failure reports.* %__GFP_COMP address compound page metadata.* %__GFP_ZERO returns a zeroed page on success.则attrs或等于DMA_ATTR_NO_WARN: This tells the DMA-mapping subsystem to suppress* allocation failure reports (similarly to __GFP_NOWARN).

786

返回:dma_alloc_attrs(dev, size, dma_addr, gfp, attrs)

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码