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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * Copyright (C) 2002-2003 Hewlett-Packard Co | |
4 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
5 | */ | |
6 | #ifndef _ASM_IA64_THREAD_INFO_H | |
7 | #define _ASM_IA64_THREAD_INFO_H | |
8 | ||
82f1b07b | 9 | #ifndef ASM_OFFSETS_C |
0013a854 | 10 | #include <asm/asm-offsets.h> |
82f1b07b | 11 | #endif |
1da177e4 LT |
12 | #include <asm/processor.h> |
13 | #include <asm/ptrace.h> | |
14 | ||
1da177e4 LT |
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() */ | |
1da177e4 LT |
24 | __u32 flags; /* thread_info flags (see TIF_*) */ |
25 | __u32 cpu; /* current CPU */ | |
e08e6c52 | 26 | __u32 last_cpu; /* Last CPU thread ran on */ |
495ab9c0 | 27 | __u32 status; /* Thread synchronous flags */ |
1da177e4 | 28 | mm_segment_t addr_limit; /* user-level address space limit */ |
dcd497f9 | 29 | int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ |
abf917cd | 30 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
7dd58230 FW |
31 | __u64 utime; |
32 | __u64 stime; | |
33 | __u64 gtime; | |
34 | __u64 hardirq_time; | |
35 | __u64 softirq_time; | |
36 | __u64 idle_time; | |
b64f34cd HS |
37 | __u64 ac_stamp; |
38 | __u64 ac_leave; | |
39 | __u64 ac_stime; | |
40 | __u64 ac_utime; | |
41 | #endif | |
1da177e4 LT |
42 | }; |
43 | ||
44 | #define THREAD_SIZE KERNEL_STACK_SIZE | |
45 | ||
46 | #define INIT_THREAD_INFO(tsk) \ | |
47 | { \ | |
48 | .task = &tsk, \ | |
1da177e4 LT |
49 | .flags = 0, \ |
50 | .cpu = 0, \ | |
51 | .addr_limit = KERNEL_DS, \ | |
c99e6efe | 52 | .preempt_count = INIT_PREEMPT_COUNT, \ |
1da177e4 LT |
53 | } |
54 | ||
82f1b07b | 55 | #ifndef ASM_OFFSETS_C |
1da177e4 LT |
56 | /* how to get the thread information struct from C */ |
57 | #define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE)) | |
b235beea LT |
58 | #define alloc_thread_stack_node(tsk, node) \ |
59 | ((unsigned long *) ((char *) (tsk) + IA64_TASK_SIZE)) | |
ab03591d | 60 | #define task_thread_info(tsk) ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE)) |
82f1b07b TL |
61 | #else |
62 | #define current_thread_info() ((struct thread_info *) 0) | |
b235beea | 63 | #define alloc_thread_stack_node(tsk, node) ((unsigned long *) 0) |
ab03591d | 64 | #define task_thread_info(tsk) ((struct thread_info *) 0) |
82f1b07b | 65 | #endif |
ba14a194 | 66 | #define free_thread_stack(tsk) /* nothing */ |
ab03591d AV |
67 | #define task_stack_page(tsk) ((void *)(tsk)) |
68 | ||
69 | #define __HAVE_THREAD_FUNCTIONS | |
abf917cd | 70 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
b64f34cd HS |
71 | #define setup_thread_stack(p, org) \ |
72 | *task_thread_info(p) = *task_thread_info(org); \ | |
73 | task_thread_info(p)->ac_stime = 0; \ | |
74 | task_thread_info(p)->ac_utime = 0; \ | |
75 | task_thread_info(p)->task = (p); | |
76 | #else | |
ab03591d AV |
77 | #define setup_thread_stack(p, org) \ |
78 | *task_thread_info(p) = *task_thread_info(org); \ | |
79 | task_thread_info(p)->task = (p); | |
b64f34cd | 80 | #endif |
ab03591d | 81 | #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) |
1da177e4 | 82 | |
504f52b5 ED |
83 | #define alloc_task_struct_node(node) \ |
84 | ({ \ | |
85 | struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP, \ | |
86 | KERNEL_STACK_SIZE_ORDER); \ | |
87 | struct task_struct *ret = page ? page_address(page) : NULL; \ | |
88 | \ | |
f48fea03 | 89 | ret; \ |
504f52b5 | 90 | }) |
1da177e4 LT |
91 | #define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) |
92 | ||
93 | #endif /* !__ASSEMBLY */ | |
94 | ||
95 | /* | |
96 | * thread information flags | |
97 | * - these are process state flags that various assembly files may need to access | |
98 | * - pending work-to-be-done flags are in least-significant 16 bits, other flags | |
99 | * in top 16 bits | |
100 | */ | |
a583f1b5 SE |
101 | #define TIF_SIGPENDING 0 /* signal pending */ |
102 | #define TIF_NEED_RESCHED 1 /* rescheduling necessary */ | |
103 | #define TIF_SYSCALL_TRACE 2 /* syscall trace active */ | |
104 | #define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */ | |
105 | #define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ | |
5aa92ffd | 106 | #define TIF_NOTIFY_RESUME 6 /* resumption notification requested */ |
0ddc9324 | 107 | #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ |
e619ae0b | 108 | #define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */ |
15029285 | 109 | #define TIF_DB_DISABLED 19 /* debug trap disabled for fsyscall */ |
3b2ce0b1 | 110 | #define TIF_RESTORE_RSE 21 /* user RBS is newer than kernel RBS */ |
04075425 | 111 | #define TIF_POLLING_NRFLAG 22 /* idle is polling for TIF_NEED_RESCHED */ |
1da177e4 LT |
112 | |
113 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | |
114 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) | |
90f9d70a | 115 | #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
116 | #define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP) | |
5aa92ffd | 117 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) |
1da177e4 LT |
118 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
119 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
e619ae0b | 120 | #define _TIF_MCA_INIT (1 << TIF_MCA_INIT) |
15029285 | 121 | #define _TIF_DB_DISABLED (1 << TIF_DB_DISABLED) |
3b2ce0b1 | 122 | #define _TIF_RESTORE_RSE (1 << TIF_RESTORE_RSE) |
04075425 | 123 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) |
1da177e4 LT |
124 | |
125 | /* "work to do on user-return" bits */ | |
5aa92ffd | 126 | #define TIF_ALLWORK_MASK (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\ |
49eaeb4b | 127 | _TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE) |
1da177e4 LT |
128 | /* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */ |
129 | #define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)) | |
130 | ||
131 | #endif /* _ASM_IA64_THREAD_INFO_H */ |