| /* thread_info.h: common low-level thread information accessors |
| * |
| * Copyright (C) 2002 David Howells (dhowells@redhat.com) |
| * - Incorporating suggestions made by Linus Torvalds |
| */ |
| |
| #ifndef _LINUX_THREAD_INFO_H |
| #define _LINUX_THREAD_INFO_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * System call restart block. |
| */ |
| struct restart_block { |
| long (*fn)(struct restart_block *); |
| union { |
| struct { |
| unsigned long arg0, arg1, arg2, arg3; |
| }; |
| /* For futex_wait */ |
| struct { |
| u32 *uaddr; |
| u32 val; |
| u32 flags; |
| u32 bitset; |
| u64 time; |
| } futex; |
| }; |
| }; |
| |
| extern long do_no_restart_syscall(struct restart_block *parm); |
| |
| #include <linux/bitops.h> |
| #include <asm/thread_info.h> |
| |
| #ifdef __KERNEL__ |
| |
| /* |
| * flag set/clear/test wrappers |
| * - pass TIF_xxxx constants to these functions |
| */ |
| |
| static inline void set_ti_thread_flag(struct thread_info *ti, int flag) |
| { |
| set_bit(flag, (unsigned long *)&ti->flags); |
| } |
| |
| static inline void clear_ti_thread_flag(struct thread_info *ti, int flag) |
| { |
| clear_bit(flag, (unsigned long *)&ti->flags); |
| } |
| |
| static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag) |
| { |
| return test_and_set_bit(flag, (unsigned long *)&ti->flags); |
| } |
| |
| static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag) |
| { |
| return test_and_clear_bit(flag, (unsigned long *)&ti->flags); |
| } |
| |
| static inline int test_ti_thread_flag(struct thread_info *ti, int flag) |
| { |
| return test_bit(flag, (unsigned long *)&ti->flags); |
| } |
| |
| #define set_thread_flag(flag) \ |
| set_ti_thread_flag(current_thread_info(), flag) |
| #define clear_thread_flag(flag) \ |
| clear_ti_thread_flag(current_thread_info(), flag) |
| #define test_and_set_thread_flag(flag) \ |
| test_and_set_ti_thread_flag(current_thread_info(), flag) |
| #define test_and_clear_thread_flag(flag) \ |
| test_and_clear_ti_thread_flag(current_thread_info(), flag) |
| #define test_thread_flag(flag) \ |
| test_ti_thread_flag(current_thread_info(), flag) |
| |
| #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) |
| #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) |
| |
| #endif |
| |
| #endif /* _LINUX_THREAD_INFO_H */ |