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 */ 13struct restart_block { 14 long (*fn)(struct restart_block *); 15 unsigned long arg0, arg1, arg2, arg3; 16}; 17 18extern 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 30static inline void set_ti_thread_flag(struct thread_info *ti, int flag) 31{ 32 set_bit(flag,&ti->flags); 33} 34 35static inline void clear_ti_thread_flag(struct thread_info *ti, int flag) 36{ 37 clear_bit(flag,&ti->flags); 38} 39 40static 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 45static 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 50static 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