函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\direct.c Create Date:2022-07-27 11:33:03
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_direct_alloc

函数原型：void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)

返回类型：void

参数：

类型参数名称
struct device *dev
size_tsize
dma_addr_t *dma_handle
gfp_tgfp
unsigned longattrs
240  如果非IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_ARCH_HAS_UNCACHED_SEGMENT)且非IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_DMA_DIRECT_REMAP)且Check if an allocation needs to be marked uncached to be coherent.则返回:arch_dma_alloc(dev, size, dma_handle, gfp, attrs)
244  返回:dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs)
调用者
名称描述
dma_alloc_attrs