Function report |
Source Code:include\linux\dma-noncoherent.h |
Create Date:2022-07-28 10:32:25 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Check if an allocation needs to be marked uncached to be coherent.
Proto:static __always_inline bool dma_alloc_need_uncached(struct device *dev, unsigned long attrs)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct device * | dev | |
unsigned long | attrs |
30 | If dev_is_dma_coherent(dev) Then Return false |
32 | If attrs & DMA_ATTR_NO_KERNEL_MAPPING: Lets the platform to avoid creating a kernel* virtual mapping for the allocated buffer. Then Return false |
37 | Return true |
Name | Describe |
---|---|
dma_direct_alloc_pages | |
dma_direct_alloc | |
dma_direct_free |
Source code conversion tool public plug-in interface | X |
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