Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\debug.c Create Date:2022-07-28 10:35:13
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:debug_dma_map_single

Proto:void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len)

Type:void

Parameter:

TypeParameterName
struct device *dev
const void *addr
unsigned longlen
1237  If Value for the false possibility is greater at compile time(dma_debug_disabled()) Then Return
1240  If Not virt_addr_valid(addr) Then
1244  If 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. Then