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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 | ||
1da177e4 LT |
30 | static inline void set_ti_thread_flag(struct thread_info *ti, int flag) |
31 | { | |
32 | set_bit(flag,&ti->flags); | |
33 | } | |
34 | ||
35 | static inline void clear_ti_thread_flag(struct thread_info *ti, int flag) | |
36 | { | |
37 | clear_bit(flag,&ti->flags); | |
38 | } | |
39 | ||
40 | static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag) | |
41 | { | |
42 | return test_and_set_bit(flag,&ti->flags); | |
43 | } | |
44 | ||
45 | static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag) | |
46 | { | |
47 | return test_and_clear_bit(flag,&ti->flags); | |
48 | } | |
49 | ||
50 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | |
51 | { | |
52 | return test_bit(flag,&ti->flags); | |
53 | } | |
54 | ||
3b66a1ed RZ |
55 | #define set_thread_flag(flag) \ |
56 | set_ti_thread_flag(current_thread_info(), flag) | |
57 | #define clear_thread_flag(flag) \ | |
58 | clear_ti_thread_flag(current_thread_info(), flag) | |
59 | #define test_and_set_thread_flag(flag) \ | |
60 | test_and_set_ti_thread_flag(current_thread_info(), flag) | |
61 | #define test_and_clear_thread_flag(flag) \ | |
62 | test_and_clear_ti_thread_flag(current_thread_info(), flag) | |
63 | #define test_thread_flag(flag) \ | |
64 | test_ti_thread_flag(current_thread_info(), flag) | |
65 | ||
66 | #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) | |
67 | #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) | |
1da177e4 LT |
68 | |
69 | #endif | |
70 | ||
71 | #endif /* _LINUX_THREAD_INFO_H */ |