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