Don't include linux/config.h from anywhere else in include/
[linux-2.6.git] / include / asm-um / thread_info.h
1 /* 
2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3  * Licensed under the GPL
4  */
5
6 #ifndef __UM_THREAD_INFO_H
7 #define __UM_THREAD_INFO_H
8
9 #ifndef __ASSEMBLY__
10
11 #include <asm/processor.h>
12 #include <asm/types.h>
13
14 struct thread_info {
15         struct task_struct      *task;          /* main task structure */
16         struct exec_domain      *exec_domain;   /* execution domain */
17         unsigned long           flags;          /* low level flags */
18         __u32                   cpu;            /* current CPU */
19         int                     preempt_count;  /* 0 => preemptable,
20                                                    <0 => BUG */
21         mm_segment_t            addr_limit;     /* thread address space:
22                                                    0-0xBFFFFFFF for user
23                                                    0-0xFFFFFFFF for kernel */
24         struct restart_block    restart_block;
25 };
26
27 #define INIT_THREAD_INFO(tsk)                   \
28 {                                               \
29         .task =         &tsk,                   \
30         .exec_domain =  &default_exec_domain,   \
31         .flags =                0,              \
32         .cpu =          0,                      \
33         .preempt_count =        1,              \
34         .addr_limit =   KERNEL_DS,              \
35         .restart_block =  {                     \
36                 .fn =  do_no_restart_syscall,   \
37         },                                      \
38 }
39
40 #define init_thread_info        (init_thread_union.thread_info)
41 #define init_stack              (init_thread_union.stack)
42
43 #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
44 /* how to get the thread information struct from C */
45 static inline struct thread_info *current_thread_info(void)
46 {
47         struct thread_info *ti;
48         unsigned long mask = THREAD_SIZE - 1;
49         ti = (struct thread_info *) (((unsigned long) &ti) & ~mask);
50         return ti;
51 }
52
53 /* thread information allocation */
54 #define alloc_thread_info(tsk) \
55         ((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL))
56 #define free_thread_info(ti) kfree(ti)
57
58 #endif
59
60 #define PREEMPT_ACTIVE          0x10000000
61
62 #define TIF_SYSCALL_TRACE       0       /* syscall trace active */
63 #define TIF_SIGPENDING          1       /* signal pending */
64 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
65 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling 
66                                          * TIF_NEED_RESCHED 
67                                          */
68 #define TIF_RESTART_BLOCK       4
69 #define TIF_MEMDIE              5
70 #define TIF_SYSCALL_AUDIT       6
71 #define TIF_RESTORE_SIGMASK     7
72
73 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
74 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
75 #define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
76 #define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
77 #define _TIF_MEMDIE             (1 << TIF_MEMDIE)
78 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
79 #define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
80
81 #endif