Function report |
Source Code:kernel\dma\direct.c |
Create Date:2022-07-28 10:33:02 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:__dma_direct_optimal_gfp_mask
Proto:static gfp_t __dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, u64 *phys_limit)
Type:gfp_t
Parameter:
Type | Parameter | Name |
---|---|---|
struct device * | dev | |
u64 | dma_mask | |
u64 * | phys_limit |
62 | dma_limit = min_not_zero - return the minimum that is _not_ zero, unless both are zero*@x: value1*@y: value2(dma_mask, upstream dma constraint ) |
64 | If force_dma_unencrypted(dev) Then phys_limit = __dma_to_phys(dev, dma_limit) |
66 | Else phys_limit = dma_to_phys(dev, dma_limit) |
79 | If phys_limit <= DMA_BIT_MASK(32) Then Return GFP_DMA32 |
81 | Return 0 |
Name | Describe |
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__dma_direct_alloc_pages |
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