Commit | Line | Data |
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a5a678c8 JD |
1 | /* |
2 | * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | |
1da177e4 LT |
3 | * Licensed under the GPL |
4 | */ | |
5 | ||
6 | #ifndef __UM_THREAD_INFO_H | |
7 | #define __UM_THREAD_INFO_H | |
8 | ||
9 | #ifndef __ASSEMBLY__ | |
10 | ||
1da177e4 | 11 | #include <asm/types.h> |
8192ab42 | 12 | #include <asm/page.h> |
f8d65d27 | 13 | #include <asm/segment.h> |
1da177e4 LT |
14 | |
15 | struct thread_info { | |
16 | struct task_struct *task; /* main task structure */ | |
1da177e4 LT |
17 | unsigned long flags; /* low level flags */ |
18 | __u32 cpu; /* current CPU */ | |
dcd497f9 | 19 | int preempt_count; /* 0 => preemptable, |
1da177e4 LT |
20 | <0 => BUG */ |
21 | mm_segment_t addr_limit; /* thread address space: | |
22 | 0-0xBFFFFFFF for user | |
23 | 0-0xFFFFFFFF for kernel */ | |
c14b8494 | 24 | struct thread_info *real_thread; /* Points to non-IRQ stack */ |
1da177e4 LT |
25 | }; |
26 | ||
27 | #define INIT_THREAD_INFO(tsk) \ | |
28 | { \ | |
4d338e1a | 29 | .task = &tsk, \ |
4d338e1a AV |
30 | .flags = 0, \ |
31 | .cpu = 0, \ | |
c99e6efe | 32 | .preempt_count = INIT_PREEMPT_COUNT, \ |
4d338e1a | 33 | .addr_limit = KERNEL_DS, \ |
c14b8494 | 34 | .real_thread = NULL, \ |
1da177e4 LT |
35 | } |
36 | ||
37 | #define init_thread_info (init_thread_union.thread_info) | |
38 | #define init_stack (init_thread_union.stack) | |
39 | ||
b3461034 | 40 | #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) |
1da177e4 LT |
41 | /* how to get the thread information struct from C */ |
42 | static inline struct thread_info *current_thread_info(void) | |
43 | { | |
44 | struct thread_info *ti; | |
b3461034 | 45 | unsigned long mask = THREAD_SIZE - 1; |
534e3adb RW |
46 | void *p; |
47 | ||
48 | asm volatile ("" : "=r" (p) : "0" (&ti)); | |
49 | ti = (struct thread_info *) (((unsigned long)p) & ~mask); | |
1da177e4 LT |
50 | return ti; |
51 | } | |
52 | ||
b69c49b7 | 53 | #define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER |
1da177e4 | 54 | |
1da177e4 LT |
55 | #endif |
56 | ||
1da177e4 LT |
57 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ |
58 | #define TIF_SIGPENDING 1 /* signal pending */ | |
59 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
0ddc9324 AD |
60 | #define TIF_RESTART_BLOCK 4 |
61 | #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ | |
79d20b14 | 62 | #define TIF_SYSCALL_AUDIT 6 |
2fc10620 | 63 | #define TIF_RESTORE_SIGMASK 7 |
d50349b0 | 64 | #define TIF_NOTIFY_RESUME 8 |
c50b4659 | 65 | #define TIF_SECCOMP 9 /* secure computing */ |
1da177e4 LT |
66 | |
67 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | |
68 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | |
69 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
79d20b14 JD |
70 | #define _TIF_MEMDIE (1 << TIF_MEMDIE) |
71 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) | |
c50b4659 | 72 | #define _TIF_SECCOMP (1 << TIF_SECCOMP) |
1da177e4 LT |
73 | |
74 | #endif |