函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\membarrier.c Create Date:2022-07-27 10:45:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：membarrier_register_global_expedited

函数原型：static int membarrier_register_global_expedited(void)

返回类型：int

参数：无

261  p等于当前进程
262  mm等于内存信息
265  如果atomic_read( & membarrier_state)按位与MEMBARRIER_STATE_GLOBAL_EXPEDITED_READY则返回:0
268  atomic_or(MEMBARRIER_STATE_GLOBAL_EXPEDITED, & membarrier_state)
269  ret等于sync_runqueues_membarrier_state(mm)
270  如果ret则返回:ret
272  atomic_or(MEMBARRIER_STATE_GLOBAL_EXPEDITED_READY, & membarrier_state)
275  返回:0
调用者
名称描述
SYSCALL_DEFINE2sys_membarrier - issue memory barriers on a set of threads*@cmd: Takes command values defined in enum membarrier_cmd