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1da177e4 LT |
1 | /* thread_info.h: common low-level thread information accessors |
2 | * | |
3 | * Copyright (C) 2002 David Howells (dhowells@redhat.com) | |
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,¤t_thread_info()->flags); | |
33 | } | |
34 | ||
35 | static inline void clear_thread_flag(int flag) | |
36 | { | |
37 | clear_bit(flag,¤t_thread_info()->flags); | |
38 | } | |
39 | ||
40 | static inline int test_and_set_thread_flag(int flag) | |
41 | { | |
42 | return test_and_set_bit(flag,¤t_thread_info()->flags); | |
43 | } | |
44 | ||
45 | static inline int test_and_clear_thread_flag(int flag) | |
46 | { | |
47 | return test_and_clear_bit(flag,¤t_thread_info()->flags); | |
48 | } | |
49 | ||
50 | static inline int test_thread_flag(int flag) | |
51 | { | |
52 | return test_bit(flag,¤t_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 */ |