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1da177e4 LT |
1 | #ifndef _ASM_PARISC_THREAD_INFO_H |
2 | #define _ASM_PARISC_THREAD_INFO_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #ifndef __ASSEMBLY__ | |
7 | #include <asm/processor.h> | |
8 | ||
9 | struct thread_info { | |
10 | struct task_struct *task; /* main task structure */ | |
11 | struct exec_domain *exec_domain;/* execution domain */ | |
12 | unsigned long flags; /* thread_info flags (see TIF_*) */ | |
13 | mm_segment_t addr_limit; /* user-level address space limit */ | |
14 | __u32 cpu; /* current CPU */ | |
15 | __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ | |
16 | struct restart_block restart_block; | |
17 | }; | |
18 | ||
19 | #define INIT_THREAD_INFO(tsk) \ | |
20 | { \ | |
21 | .task = &tsk, \ | |
22 | .exec_domain = &default_exec_domain, \ | |
23 | .flags = 0, \ | |
24 | .cpu = 0, \ | |
25 | .addr_limit = KERNEL_DS, \ | |
26 | .preempt_count = 1, \ | |
27 | .restart_block = { \ | |
28 | .fn = do_no_restart_syscall \ | |
29 | } \ | |
30 | } | |
31 | ||
32 | #define init_thread_info (init_thread_union.thread_info) | |
33 | #define init_stack (init_thread_union.stack) | |
34 | ||
35 | /* thread information allocation */ | |
36 | ||
37 | #define THREAD_ORDER 2 | |
38 | /* Be sure to hunt all references to this down when you change the size of | |
39 | * the kernel stack */ | |
40 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | |
41 | #define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER) | |
42 | ||
43 | #define alloc_thread_info(tsk) ((struct thread_info *) \ | |
44 | __get_free_pages(GFP_KERNEL, THREAD_ORDER)) | |
45 | #define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER) | |
46 | #define get_thread_info(ti) get_task_struct((ti)->task) | |
47 | #define put_thread_info(ti) put_task_struct((ti)->task) | |
48 | ||
49 | ||
50 | /* how to get the thread information struct from C */ | |
51 | #define current_thread_info() ((struct thread_info *)mfctl(30)) | |
52 | ||
53 | #endif /* !__ASSEMBLY */ | |
54 | ||
55 | #define PREEMPT_ACTIVE 0x10000000 | |
56 | ||
57 | /* | |
58 | * thread information flags | |
59 | */ | |
60 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | |
61 | #define TIF_NOTIFY_RESUME 1 /* resumption notification requested */ | |
62 | #define TIF_SIGPENDING 2 /* signal pending */ | |
63 | #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ | |
64 | #define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling TIF_NEED_RESCHED */ | |
65 | #define TIF_32BIT 5 /* 32 bit binary */ | |
66 | #define TIF_MEMDIE 6 | |
67 | ||
68 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | |
69 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) | |
70 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | |
71 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
72 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) | |
73 | #define _TIF_32BIT (1 << TIF_32BIT) | |
74 | ||
75 | #define _TIF_USER_WORK_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \ | |
76 | _TIF_NEED_RESCHED) | |
77 | ||
78 | #endif /* __KERNEL__ */ | |
79 | ||
80 | #endif /* _ASM_PARISC_THREAD_INFO_H */ |