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b3901d54 CM |
1 | /* |
2 | * Based on arch/arm/include/asm/thread_info.h | |
3 | * | |
4 | * Copyright (C) 2002 Russell King. | |
5 | * Copyright (C) 2012 ARM Ltd. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | #ifndef __ASM_THREAD_INFO_H | |
20 | #define __ASM_THREAD_INFO_H | |
21 | ||
22 | #ifdef __KERNEL__ | |
23 | ||
24 | #include <linux/compiler.h> | |
25 | ||
755e70b7 | 26 | #ifdef CONFIG_ARM64_4K_PAGES |
845ad05e | 27 | #define THREAD_SIZE_ORDER 2 |
44eaacf1 SP |
28 | #elif defined(CONFIG_ARM64_16K_PAGES) |
29 | #define THREAD_SIZE_ORDER 0 | |
b3901d54 CM |
30 | #endif |
31 | ||
845ad05e | 32 | #define THREAD_SIZE 16384 |
b3901d54 CM |
33 | #define THREAD_START_SP (THREAD_SIZE - 16) |
34 | ||
35 | #ifndef __ASSEMBLY__ | |
36 | ||
37 | struct task_struct; | |
b3901d54 | 38 | |
a9ea0017 | 39 | #include <asm/stack_pointer.h> |
b3901d54 CM |
40 | #include <asm/types.h> |
41 | ||
42 | typedef unsigned long mm_segment_t; | |
43 | ||
44 | /* | |
45 | * low level task data that entry.S needs immediate access to. | |
b3901d54 CM |
46 | */ |
47 | struct thread_info { | |
48 | unsigned long flags; /* low level flags */ | |
49 | mm_segment_t addr_limit; /* address limit */ | |
4b65a5db CM |
50 | #ifdef CONFIG_ARM64_SW_TTBR0_PAN |
51 | u64 ttbr0; /* saved TTBR0_EL1 */ | |
52 | #endif | |
b3901d54 | 53 | int preempt_count; /* 0 => preemptable, <0 => bug */ |
b3901d54 CM |
54 | }; |
55 | ||
56 | #define INIT_THREAD_INFO(tsk) \ | |
57 | { \ | |
b3901d54 CM |
58 | .preempt_count = INIT_PREEMPT_COUNT, \ |
59 | .addr_limit = KERNEL_DS, \ | |
b3901d54 CM |
60 | } |
61 | ||
b3901d54 CM |
62 | #define init_stack (init_thread_union.stack) |
63 | ||
b3901d54 CM |
64 | #define thread_saved_pc(tsk) \ |
65 | ((unsigned long)(tsk->thread.cpu_context.pc)) | |
66 | #define thread_saved_sp(tsk) \ | |
67 | ((unsigned long)(tsk->thread.cpu_context.sp)) | |
68 | #define thread_saved_fp(tsk) \ | |
69 | ((unsigned long)(tsk->thread.cpu_context.fp)) | |
70 | ||
71 | #endif | |
72 | ||
b3901d54 CM |
73 | /* |
74 | * thread information flags: | |
75 | * TIF_SYSCALL_TRACE - syscall trace active | |
449f81a4 AT |
76 | * TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace |
77 | * TIF_SYSCALL_AUDIT - syscall auditing | |
78 | * TIF_SECOMP - syscall secure computing | |
b3901d54 CM |
79 | * TIF_SIGPENDING - signal pending |
80 | * TIF_NEED_RESCHED - rescheduling necessary | |
81 | * TIF_NOTIFY_RESUME - callback before returning to user | |
82 | * TIF_USEDFPU - FPU was used by this task this quantum (SMP) | |
b3901d54 CM |
83 | */ |
84 | #define TIF_SIGPENDING 0 | |
85 | #define TIF_NEED_RESCHED 1 | |
86 | #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ | |
005f78cd | 87 | #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */ |
9842ceae | 88 | #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */ |
6c81fe79 | 89 | #define TIF_NOHZ 7 |
b3901d54 | 90 | #define TIF_SYSCALL_TRACE 8 |
449f81a4 AT |
91 | #define TIF_SYSCALL_AUDIT 9 |
92 | #define TIF_SYSCALL_TRACEPOINT 10 | |
93 | #define TIF_SECCOMP 11 | |
b3901d54 CM |
94 | #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ |
95 | #define TIF_FREEZE 19 | |
96 | #define TIF_RESTORE_SIGMASK 20 | |
97 | #define TIF_SINGLESTEP 21 | |
98 | #define TIF_32BIT 22 /* 32bit process */ | |
b3901d54 CM |
99 | |
100 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | |
101 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
102 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) | |
005f78cd | 103 | #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE) |
6c81fe79 | 104 | #define _TIF_NOHZ (1 << TIF_NOHZ) |
449f81a4 AT |
105 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
106 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) | |
107 | #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) | |
108 | #define _TIF_SECCOMP (1 << TIF_SECCOMP) | |
9842ceae | 109 | #define _TIF_UPROBE (1 << TIF_UPROBE) |
b3901d54 CM |
110 | #define _TIF_32BIT (1 << TIF_32BIT) |
111 | ||
112 | #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ | |
9842ceae PA |
113 | _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ |
114 | _TIF_UPROBE) | |
b3901d54 | 115 | |
449f81a4 | 116 | #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ |
6c81fe79 LB |
117 | _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ |
118 | _TIF_NOHZ) | |
b3901d54 CM |
119 | |
120 | #endif /* __KERNEL__ */ | |
121 | #endif /* __ASM_THREAD_INFO_H */ |