函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\debug.c Create Date:2022-07-27 11:35:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:debug_dma_map_single

函数原型:void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len)

返回类型:void

参数:

类型参数名称
struct device *dev
const void *addr
unsigned longlen
1237  如果此条件成立可能性小(为编译器优化)(dma_debug_disabled())则返回
1240  如果非virt_addr_valid(addr)则
1244  如果Determine if an address is within the vmalloc range* On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there* is no special casing required.