diff options
Diffstat (limited to 'include/asm-um/thread_info.h')
-rw-r--r-- | include/asm-um/thread_info.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/asm-um/thread_info.h b/include/asm-um/thread_info.h new file mode 100644 index 000000000000..bffb577bc54e --- /dev/null +++ b/include/asm-um/thread_info.h | |||
@@ -0,0 +1,93 @@ | |||
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 <linux/config.h> | ||
12 | #include <asm/processor.h> | ||
13 | #include <asm/types.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 | __s32 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 | }; | ||
27 | |||
28 | #define INIT_THREAD_INFO(tsk) \ | ||
29 | { \ | ||
30 | task: &tsk, \ | ||
31 | exec_domain: &default_exec_domain, \ | ||
32 | flags: 0, \ | ||
33 | cpu: 0, \ | ||
34 | preempt_count: 1, \ | ||
35 | addr_limit: KERNEL_DS, \ | ||
36 | restart_block: { \ | ||
37 | fn: do_no_restart_syscall, \ | ||
38 | }, \ | ||
39 | } | ||
40 | |||
41 | #define init_thread_info (init_thread_union.thread_info) | ||
42 | #define init_stack (init_thread_union.stack) | ||
43 | |||
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 = PAGE_SIZE * | ||
49 | (1 << CONFIG_KERNEL_STACK_ORDER) - 1; | ||
50 | ti = (struct thread_info *) (((unsigned long) &ti) & ~mask); | ||
51 | return ti; | ||
52 | } | ||
53 | |||
54 | /* thread information allocation */ | ||
55 | #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) | ||
56 | #define alloc_thread_info(tsk) \ | ||
57 | ((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL)) | ||
58 | #define free_thread_info(ti) kfree(ti) | ||
59 | |||
60 | #define get_thread_info(ti) get_task_struct((ti)->task) | ||
61 | #define put_thread_info(ti) put_task_struct((ti)->task) | ||
62 | |||
63 | #endif | ||
64 | |||
65 | #define PREEMPT_ACTIVE 0x4000000 | ||
66 | |||
67 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | ||
68 | #define TIF_SIGPENDING 1 /* signal pending */ | ||
69 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | ||
70 | #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling | ||
71 | * TIF_NEED_RESCHED | ||
72 | */ | ||
73 | #define TIF_RESTART_BLOCK 4 | ||
74 | #define TIF_MEMDIE 5 | ||
75 | |||
76 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | ||
77 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | ||
78 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | ||
79 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) | ||
80 | #define _TIF_RESTART_BLOCK (1 << TIF_RESTART_BLOCK) | ||
81 | |||
82 | #endif | ||
83 | |||
84 | /* | ||
85 | * Overrides for Emacs so that we follow Linus's tabbing style. | ||
86 | * Emacs will notice this stuff at the end of the file and automatically | ||
87 | * adjust the settings for this buffer only. This must remain at the end | ||
88 | * of the file. | ||
89 | * --------------------------------------------------------------------------- | ||
90 | * Local variables: | ||
91 | * c-file-style: "linux" | ||
92 | * End: | ||
93 | */ | ||