| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
| 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Roman Zippel | 3b66a1e | 2005-11-13 16:06:59 -0800 | [diff] [blame] | 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) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| Roman Zippel | 3b66a1e | 2005-11-13 16:06:59 -0800 | [diff] [blame] | 66 | #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) |
| 67 | #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | #endif |
| 70 | |
| 71 | #endif /* _LINUX_THREAD_INFO_H */ |