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 18:08:08
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：cma_used_get

函数原型：static int cma_used_get(void *data, u64 *val)

返回类型：int

参数：

类型参数名称
void *data
u64 *val
36  cma等于data
39  mutex_lock( & lock)
41  used等于bitmap_weight(bitmap, (int)cma_bitmap_maxno(cma))
42  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
43  val等于used左移 Order of pages represented by one bit 位
45  返回:0