1 /* thread_info.h: common low-level thread information accessors
3 * Copyright (C) 2002 David Howells (dhowells@redhat.com)
4 * - Incorporating suggestions made by Linus Torvalds
7 #ifndef _LINUX_THREAD_INFO_H
8 #define _LINUX_THREAD_INFO_H
10 #include <linux/types.h>
13 * System call restart block.
15 struct restart_block {
16 long (*fn)(struct restart_block *);
19 unsigned long arg0, arg1, arg2, arg3;
31 extern long do_no_restart_syscall(struct restart_block *parm);
33 #include <linux/bitops.h>
34 #include <asm/thread_info.h>
39 * flag set/clear/test wrappers
40 * - pass TIF_xxxx constants to these functions
43 static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
45 set_bit(flag, (unsigned long *)&ti->flags);
48 static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
50 clear_bit(flag, (unsigned long *)&ti->flags);
53 static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag)
55 return test_and_set_bit(flag, (unsigned long *)&ti->flags);
58 static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag)
60 return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
63 static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
65 return test_bit(flag, (unsigned long *)&ti->flags);
68 #define set_thread_flag(flag) \
69 set_ti_thread_flag(current_thread_info(), flag)
70 #define clear_thread_flag(flag) \
71 clear_ti_thread_flag(current_thread_info(), flag)
72 #define test_and_set_thread_flag(flag) \
73 test_and_set_ti_thread_flag(current_thread_info(), flag)
74 #define test_and_clear_thread_flag(flag) \
75 test_and_clear_ti_thread_flag(current_thread_info(), flag)
76 #define test_thread_flag(flag) \
77 test_ti_thread_flag(current_thread_info(), flag)
79 #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED)
80 #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED)
84 #endif /* _LINUX_THREAD_INFO_H */