函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\cma_debug.c Create Date:2022-07-27 18:08:17
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：cma_free_mem

函数原型：static int cma_free_mem(struct cma *cma, int count)

返回类型：int

参数：

类型参数名称
struct cma *cma
intcount
94  struct cma_mem * mem = NULL
96  当count循环
97  mem等于cma_get_entry_from_list(cma)
98  如果(mem == NULL)则返回:0
101  如果n小于等于count则
102  ma_release() - release allocated pages*@cma: Contiguous memory region for which the allocation is performed
103  count减等于n
104  释放内存
105  否则如果 Order of pages represented by one bit 恒等于0则
106  ma_release() - release allocated pages*@cma: Contiguous memory region for which the allocation is performed
107  p加等于count
108  n减等于count
109  count等于0
110  cma_add_to_cma_mem_list(cma, mem)
111  否则
112  pr_debug("cma: cannot release partial block when order_per_bit != 0\n")
113  cma_add_to_cma_mem_list(cma, mem)
114  退出
118  返回:0
调用者
名称描述
cma_free_write