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>
11 #include <linux/bug.h>
14 struct compat_timespec;
17 * System call restart block.
19 struct restart_block {
20 long (*fn)(struct restart_block *);
22 /* For futex_wait and futex_wait_requeue_pi */
34 struct timespec __user *rmtp;
36 struct compat_timespec __user *compat_rmtp;
42 struct pollfd __user *ufds;
46 unsigned long tv_nsec;
51 extern long do_no_restart_syscall(struct restart_block *parm);
53 #include <linux/bitops.h>
54 #include <asm/thread_info.h>
58 #ifdef CONFIG_DEBUG_STACK_USAGE
59 # define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK | \
62 # define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK)
66 * flag set/clear/test wrappers
67 * - pass TIF_xxxx constants to these functions
70 static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
72 set_bit(flag, (unsigned long *)&ti->flags);
75 static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
77 clear_bit(flag, (unsigned long *)&ti->flags);
80 static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag)
82 return test_and_set_bit(flag, (unsigned long *)&ti->flags);
85 static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag)
87 return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
90 static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
92 return test_bit(flag, (unsigned long *)&ti->flags);
95 #define set_thread_flag(flag) \
96 set_ti_thread_flag(current_thread_info(), flag)
97 #define clear_thread_flag(flag) \
98 clear_ti_thread_flag(current_thread_info(), flag)
99 #define test_and_set_thread_flag(flag) \
100 test_and_set_ti_thread_flag(current_thread_info(), flag)
101 #define test_and_clear_thread_flag(flag) \
102 test_and_clear_ti_thread_flag(current_thread_info(), flag)
103 #define test_thread_flag(flag) \
104 test_ti_thread_flag(current_thread_info(), flag)
106 #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED)
108 #endif /* __KERNEL__ */
110 #endif /* _LINUX_THREAD_INFO_H */