函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\cma.c Create Date:2022-07-27 18:06:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：cma_bitmap_aligned_mask

函数原型：static unsigned long cma_bitmap_aligned_mask(const struct cma *cma, unsigned int align_order)

返回类型：unsigned long

参数：

类型参数名称
const struct cma *cma
unsigned intalign_order
61  如果align_order小于等于 Order of pages represented by one bit 则返回:0
63  返回:1UL左移align_order减 Order of pages represented by one bit 位的值减1
调用者
名称描述
cma_allocma_alloc() - allocate pages from contiguous area*@cma: Contiguous memory region for which the allocation is performed