xref: /OK3568_Linux_fs/kernel/include/linux/sem.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _LINUX_SEM_H
3*4882a593Smuzhiyun #define _LINUX_SEM_H
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #include <uapi/linux/sem.h>
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun struct task_struct;
8*4882a593Smuzhiyun struct sem_undo_list;
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #ifdef CONFIG_SYSVIPC
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun struct sysv_sem {
13*4882a593Smuzhiyun 	struct sem_undo_list *undo_list;
14*4882a593Smuzhiyun };
15*4882a593Smuzhiyun 
16*4882a593Smuzhiyun extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
17*4882a593Smuzhiyun extern void exit_sem(struct task_struct *tsk);
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun #else
20*4882a593Smuzhiyun 
21*4882a593Smuzhiyun struct sysv_sem {
22*4882a593Smuzhiyun 	/* empty */
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun 
copy_semundo(unsigned long clone_flags,struct task_struct * tsk)25*4882a593Smuzhiyun static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun 	return 0;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun 
exit_sem(struct task_struct * tsk)30*4882a593Smuzhiyun static inline void exit_sem(struct task_struct *tsk)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun 	return;
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun #endif
35*4882a593Smuzhiyun 
36*4882a593Smuzhiyun #endif /* _LINUX_SEM_H */
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