Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\membarrier.c Create Date:2022-07-28 09:45:34
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:membarrier_register_private_expedited

Proto:static int membarrier_register_private_expedited(int flags)

Type:int

Parameter:

TypeParameterName
intflags
280  p = current process
281  mm = mm
282  ready_state = MEMBARRIER_STATE_PRIVATE_EXPEDITED_READY , set_state = MEMBARRIER_STATE_PRIVATE_EXPEDITED
286  If flags & MEMBARRIER_FLAG_SYNC_CORE Then
287  If Not IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE) Then Return -EINVAL
289  ready_state = MEMBARRIER_STATE_PRIVATE_EXPEDITED_SYNC_CORE_READY
298  If (atomic_read( & membarrier_state) & ready_state) == ready_state Then Return 0
300  If flags & MEMBARRIER_FLAG_SYNC_CORE Then set_state |= MEMBARRIER_STATE_PRIVATE_EXPEDITED_SYNC_CORE
302  atomic_or(set_state, & membarrier_state)
303  ret = sync_runqueues_membarrier_state(mm)
304  If ret Then Return ret
306  atomic_or(ready_state, & membarrier_state)
308  Return 0
Caller
NameDescribe
SYSCALL_DEFINE2sys_membarrier - issue memory barriers on a set of threads*@cmd: Takes command values defined in enum membarrier_cmd