1 /* thread_info.h: common low-level thread information accessors 2 * 3 * Copyright (C) 2002 David Howells (dhowells (at) 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 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 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) 68 69 #endif 70 71 #endif /* _LINUX_THREAD_INFO_H */ 72
