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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 */ | |
dcd497f9 | 15 | int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ |
1da177e4 LT |
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, \ | |
c99e6efe | 26 | .preempt_count = INIT_PREEMPT_COUNT, \ |
1da177e4 LT |
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 | ||
b69c49b7 | 37 | #define THREAD_SIZE_ORDER 2 |
1da177e4 LT |
38 | /* Be sure to hunt all references to this down when you change the size of |
39 | * the kernel stack */ | |
b69c49b7 FT |
40 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) |
41 | #define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) | |
1da177e4 LT |
42 | |
43 | /* how to get the thread information struct from C */ | |
44 | #define current_thread_info() ((struct thread_info *)mfctl(30)) | |
45 | ||
46 | #endif /* !__ASSEMBLY */ | |
47 | ||
50a34dbd KM |
48 | #define PREEMPT_ACTIVE_BIT 28 |
49 | #define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT) | |
1da177e4 LT |
50 | |
51 | /* | |
52 | * thread information flags | |
53 | */ | |
54 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | |
a583f1b5 SE |
55 | #define TIF_SIGPENDING 1 /* signal pending */ |
56 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
57 | #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */ | |
58 | #define TIF_32BIT 4 /* 32 bit binary */ | |
59 | #define TIF_MEMDIE 5 | |
60 | #define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */ | |
83224b08 | 61 | #define TIF_FREEZE 7 /* is freezing for suspend */ |
1da177e4 LT |
62 | |
63 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | |
1da177e4 LT |
64 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
65 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
66 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) | |
67 | #define _TIF_32BIT (1 << TIF_32BIT) | |
4650f0a5 | 68 | #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) |
83224b08 | 69 | #define _TIF_FREEZE (1 << TIF_FREEZE) |
1da177e4 | 70 | |
a583f1b5 | 71 | #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | \ |
4650f0a5 | 72 | _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK) |
1da177e4 LT |
73 | |
74 | #endif /* __KERNEL__ */ | |
75 | ||
76 | #endif /* _ASM_PARISC_THREAD_INFO_H */ |