1 /*
2 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.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/types.h>
12 #include <asm/page.h>
13 #include <asm/uaccess.h>
14
15 struct thread_info {
16 struct task_struct *task; /* main task structure */
17 struct exec_domain *exec_domain; /* execution domain */
18 unsigned long flags; /* low level flags */
19 __u32 cpu; /* current CPU */
20 int preempt_count; /* 0 => preemptable,
21 <0 => BUG */
22 mm_segment_t addr_limit; /* thread address space:
23 0-0xBFFFFFFF for user
24 0-0xFFFFFFFF for kernel */
25 struct restart_block restart_block;
26 struct thread_info *real_thread; /* Points to non-IRQ stack */
27 };
28
29 #define INIT_THREAD_INFO(tsk) \
30 { \
31 .task = &tsk, \
32 .exec_domain = &default_exec_domain, \
33 .flags = 0, \
34 .cpu = 0, \
35 .preempt_count = INIT_PREEMPT_COUNT, \
36 .addr_limit = KERNEL_DS, \
37 .restart_block = { \
38 .fn = do_no_restart_syscall, \
39 }, \
40 .real_thread = NULL, \
41 }
42
43 #define init_thread_info (init_thread_union.thread_info)
44 #define init_stack (init_thread_union.stack)
45
46 #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
47 /* how to get the thread information struct from C */
48 static inline struct thread_info *current_thread_info(void)
49 {
50 struct thread_info *ti;
51 unsigned long mask = THREAD_SIZE - 1;
52 ti = (struct thread_info *) (((unsigned long) &ti) & ~mask);
53 return ti;
54 }
55
56 #define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
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 #define TIF_FREEZE 16 /* is freezing for suspend */
73
74 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
75 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
76 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
77 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
78 #define _TIF_MEMDIE (1 << TIF_MEMDIE)
79 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
80 #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
81 #define _TIF_FREEZE (1 << TIF_FREEZE)
82
83 #endif
84
|
This page was automatically generated by the
LXR engine.
|