xref: /linux-6.15/include/linux/thread_info.h (revision 4bedea94) 
1 /* thread_info.h: common low-level thread information accessors
2  *
3  * Copyright (C) 2002  David Howells ([email protected])
4  * - Incorporating suggestions made by Linus Torvalds
5  */
6 
7 #ifndef _LINUX_THREAD_INFO_H
8 #define _LINUX_THREAD_INFO_H
9 
10 /*
11  * System call restart block.
12  */
13 struct restart_block {
14 	long (*fn)(struct restart_block *);
15 	unsigned long arg0, arg1, arg2, arg3;
16 };
17 
18 extern long do_no_restart_syscall(struct restart_block *parm);
19 
20 #include <linux/bitops.h>
21 #include <asm/thread_info.h>
22 
23 #ifdef __KERNEL__
24 
25 /*
26  * flag set/clear/test wrappers
27  * - pass TIF_xxxx constants to these functions
28  */
29 
30 static inline void set_thread_flag(int flag)
31 {
32 	set_bit(flag,&current_thread_info()->flags);
33 }
34 
35 static inline void clear_thread_flag(int flag)
36 {
37 	clear_bit(flag,&current_thread_info()->flags);
38 }
39 
40 static inline int test_and_set_thread_flag(int flag)
41 {
42 	return test_and_set_bit(flag,&current_thread_info()->flags);
43 }
44 
45 static inline int test_and_clear_thread_flag(int flag)
46 {
47 	return test_and_clear_bit(flag,&current_thread_info()->flags);
48 }
49 
50 static inline int test_thread_flag(int flag)
51 {
52 	return test_bit(flag,&current_thread_info()->flags);
53 }
54 
55 static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
56 {
57 	set_bit(flag,&ti->flags);
58 }
59 
60 static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
61 {
62 	clear_bit(flag,&ti->flags);
63 }
64 
65 static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag)
66 {
67 	return test_and_set_bit(flag,&ti->flags);
68 }
69 
70 static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag)
71 {
72 	return test_and_clear_bit(flag,&ti->flags);
73 }
74 
75 static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
76 {
77 	return test_bit(flag,&ti->flags);
78 }
79 
80 static inline void set_need_resched(void)
81 {
82 	set_thread_flag(TIF_NEED_RESCHED);
83 }
84 
85 static inline void clear_need_resched(void)
86 {
87 	clear_thread_flag(TIF_NEED_RESCHED);
88 }
89 
90 #endif
91 
92 #endif /* _LINUX_THREAD_INFO_H */
93