1 /* thread_info.h: common low-level thread information accessors 2 * 3 * Copyright (C) 2002 David Howells ([email protected]) 4 * - Incorporating suggestions made by Linus Torvalds 5 */ 6 7 #ifndef _LINUX_THREAD_INFO_H 8 #define _LINUX_THREAD_INFO_H 9 10 #include <linux/types.h> 11 12 /* 13 * System call restart block. 14 */ 15 struct restart_block { 16 long (*fn)(struct restart_block *); 17 union { 18 struct { 19 unsigned long arg0, arg1, arg2, arg3; 20 }; 21 /* For futex_wait */ 22 struct { 23 u32 *uaddr; 24 u32 val; 25 u32 flags; 26 u64 time; 27 } futex; 28 }; 29 }; 30 31 extern long do_no_restart_syscall(struct restart_block *parm); 32 33 #include <linux/bitops.h> 34 #include <asm/thread_info.h> 35 36 #ifdef __KERNEL__ 37 38 /* 39 * flag set/clear/test wrappers 40 * - pass TIF_xxxx constants to these functions 41 */ 42 43 static inline void set_ti_thread_flag(struct thread_info *ti, int flag) 44 { 45 set_bit(flag,&ti->flags); 46 } 47 48 static inline void clear_ti_thread_flag(struct thread_info *ti, int flag) 49 { 50 clear_bit(flag,&ti->flags); 51 } 52 53 static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag) 54 { 55 return test_and_set_bit(flag,&ti->flags); 56 } 57 58 static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag) 59 { 60 return test_and_clear_bit(flag,&ti->flags); 61 } 62 63 static inline int test_ti_thread_flag(struct thread_info *ti, int flag) 64 { 65 return test_bit(flag,&ti->flags); 66 } 67 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) 78 79 #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) 80 #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) 81 82 #endif 83 84 #endif /* _LINUX_THREAD_INFO_H */ 85