projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| ce6bd420 SR |
10 | #include <linux/types.h> |
| 11 | ||
| 1da177e4 | 12 | /* |
| ce6bd420 | 13 | * System call restart block. |
| 1da177e4 LT |
14 | */ |
| 15 | struct restart_block { | |
| 16 | long (*fn)(struct restart_block *); | |
| ce6bd420 SR |
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; | |
| cd689985 | 26 | u32 bitset; |
| ce6bd420 SR |
27 | u64 time; |
| 28 | } futex; | |
| 29 | }; | |
| 1da177e4 LT |
30 | }; |
| 31 | ||
| 32 | extern long do_no_restart_syscall(struct restart_block *parm); | |
| 33 | ||
| 34 | #include <linux/bitops.h> | |
| 35 | #include <asm/thread_info.h> | |
| 36 | ||
| 37 | #ifdef __KERNEL__ | |
| 38 | ||
| 39 | /* | |
| 40 | * flag set/clear/test wrappers | |
| 41 | * - pass TIF_xxxx constants to these functions | |
| 42 | */ | |
| 43 | ||
| 1da177e4 LT |
44 | static inline void set_ti_thread_flag(struct thread_info *ti, int flag) |
| 45 | { | |
| 5548fecd | 46 | set_bit(flag, (unsigned long *)&ti->flags); |
| 1da177e4 LT |
47 | } |
| 48 | ||
| 49 | static inline void clear_ti_thread_flag(struct thread_info *ti, int flag) | |
| 50 | { | |
| 5548fecd | 51 | clear_bit(flag, (unsigned long *)&ti->flags); |
| 1da177e4 LT |
52 | } |
| 53 | ||
| 54 | static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag) | |
| 55 | { | |
| 5548fecd | 56 | return test_and_set_bit(flag, (unsigned long *)&ti->flags); |
| 1da177e4 LT |
57 | } |
| 58 | ||
| 59 | static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag) | |
| 60 | { | |
| 5548fecd | 61 | return test_and_clear_bit(flag, (unsigned long *)&ti->flags); |
| 1da177e4 LT |
62 | } |
| 63 | ||
| 64 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | |
| 65 | { | |
| 5548fecd | 66 | return test_bit(flag, (unsigned long *)&ti->flags); |
| 1da177e4 LT |
67 | } |
| 68 | ||
| 3b66a1ed RZ |
69 | #define set_thread_flag(flag) \ |
| 70 | set_ti_thread_flag(current_thread_info(), flag) | |
| 71 | #define clear_thread_flag(flag) \ | |
| 72 | clear_ti_thread_flag(current_thread_info(), flag) | |
| 73 | #define test_and_set_thread_flag(flag) \ | |
| 74 | test_and_set_ti_thread_flag(current_thread_info(), flag) | |
| 75 | #define test_and_clear_thread_flag(flag) \ | |
| 76 | test_and_clear_ti_thread_flag(current_thread_info(), flag) | |
| 77 | #define test_thread_flag(flag) \ | |
| 78 | test_ti_thread_flag(current_thread_info(), flag) | |
| 79 | ||
| 80 | #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) | |
| 81 | #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) | |
| 1da177e4 LT |
82 | |
| 83 | #endif | |
| 84 | ||
| 85 | #endif /* _LINUX_THREAD_INFO_H */ |