diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ia64/thread_info.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-ia64/thread_info.h')
-rw-r--r-- | include/asm-ia64/thread_info.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h new file mode 100644 index 000000000000..8d5b7e77028c --- /dev/null +++ b/include/asm-ia64/thread_info.h | |||
@@ -0,0 +1,94 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2002-2003 Hewlett-Packard Co | ||
3 | * David Mosberger-Tang <davidm@hpl.hp.com> | ||
4 | */ | ||
5 | #ifndef _ASM_IA64_THREAD_INFO_H | ||
6 | #define _ASM_IA64_THREAD_INFO_H | ||
7 | |||
8 | #include <asm/offsets.h> | ||
9 | #include <asm/processor.h> | ||
10 | #include <asm/ptrace.h> | ||
11 | |||
12 | #define PREEMPT_ACTIVE_BIT 30 | ||
13 | #define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT) | ||
14 | |||
15 | #ifndef __ASSEMBLY__ | ||
16 | |||
17 | /* | ||
18 | * On IA-64, we want to keep the task structure and kernel stack together, so they can be | ||
19 | * mapped by a single TLB entry and so they can be addressed by the "current" pointer | ||
20 | * without having to do pointer masking. | ||
21 | */ | ||
22 | struct thread_info { | ||
23 | struct task_struct *task; /* XXX not really needed, except for dup_task_struct() */ | ||
24 | struct exec_domain *exec_domain;/* execution domain */ | ||
25 | __u32 flags; /* thread_info flags (see TIF_*) */ | ||
26 | __u32 cpu; /* current CPU */ | ||
27 | mm_segment_t addr_limit; /* user-level address space limit */ | ||
28 | __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ | ||
29 | struct restart_block restart_block; | ||
30 | struct { | ||
31 | int signo; | ||
32 | int code; | ||
33 | void __user *addr; | ||
34 | unsigned long start_time; | ||
35 | pid_t pid; | ||
36 | } sigdelayed; /* Saved information for TIF_SIGDELAYED */ | ||
37 | }; | ||
38 | |||
39 | #define THREAD_SIZE KERNEL_STACK_SIZE | ||
40 | |||
41 | #define INIT_THREAD_INFO(tsk) \ | ||
42 | { \ | ||
43 | .task = &tsk, \ | ||
44 | .exec_domain = &default_exec_domain, \ | ||
45 | .flags = 0, \ | ||
46 | .cpu = 0, \ | ||
47 | .addr_limit = KERNEL_DS, \ | ||
48 | .preempt_count = 0, \ | ||
49 | .restart_block = { \ | ||
50 | .fn = do_no_restart_syscall, \ | ||
51 | }, \ | ||
52 | } | ||
53 | |||
54 | /* how to get the thread information struct from C */ | ||
55 | #define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE)) | ||
56 | #define alloc_thread_info(tsk) ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE)) | ||
57 | #define free_thread_info(ti) /* nothing */ | ||
58 | |||
59 | #define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR | ||
60 | #define alloc_task_struct() ((task_t *)__get_free_pages(GFP_KERNEL, KERNEL_STACK_SIZE_ORDER)) | ||
61 | #define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) | ||
62 | |||
63 | #endif /* !__ASSEMBLY */ | ||
64 | |||
65 | /* | ||
66 | * thread information flags | ||
67 | * - these are process state flags that various assembly files may need to access | ||
68 | * - pending work-to-be-done flags are in least-significant 16 bits, other flags | ||
69 | * in top 16 bits | ||
70 | */ | ||
71 | #define TIF_NOTIFY_RESUME 0 /* resumption notification requested */ | ||
72 | #define TIF_SIGPENDING 1 /* signal pending */ | ||
73 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | ||
74 | #define TIF_SYSCALL_TRACE 3 /* syscall trace active */ | ||
75 | #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ | ||
76 | #define TIF_SIGDELAYED 5 /* signal delayed from MCA/INIT/NMI/PMI context */ | ||
77 | #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ | ||
78 | #define TIF_MEMDIE 17 | ||
79 | |||
80 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | ||
81 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) | ||
82 | #define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT) | ||
83 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) | ||
84 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | ||
85 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | ||
86 | #define _TIF_SIGDELAYED (1 << TIF_SIGDELAYED) | ||
87 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) | ||
88 | |||
89 | /* "work to do on user-return" bits */ | ||
90 | #define TIF_ALLWORK_MASK (_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SIGDELAYED) | ||
91 | /* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */ | ||
92 | #define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)) | ||
93 | |||
94 | #endif /* _ASM_IA64_THREAD_INFO_H */ | ||