Linux kernel mirror (for testing)
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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 */
13struct restart_block {
14 long (*fn)(struct restart_block *);
15 unsigned long arg0, arg1, arg2, arg3;
16};
17
18extern 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
30static inline void set_thread_flag(int flag)
31{
32 set_bit(flag,¤t_thread_info()->flags);
33}
34
35static inline void clear_thread_flag(int flag)
36{
37 clear_bit(flag,¤t_thread_info()->flags);
38}
39
40static inline int test_and_set_thread_flag(int flag)
41{
42 return test_and_set_bit(flag,¤t_thread_info()->flags);
43}
44
45static inline int test_and_clear_thread_flag(int flag)
46{
47 return test_and_clear_bit(flag,¤t_thread_info()->flags);
48}
49
50static inline int test_thread_flag(int flag)
51{
52 return test_bit(flag,¤t_thread_info()->flags);
53}
54
55static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
56{
57 set_bit(flag,&ti->flags);
58}
59
60static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
61{
62 clear_bit(flag,&ti->flags);
63}
64
65static 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
70static 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
75static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
76{
77 return test_bit(flag,&ti->flags);
78}
79
80static inline void set_need_resched(void)
81{
82 set_thread_flag(TIF_NEED_RESCHED);
83}
84
85static 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 */