2 * Based on arch/arm/include/asm/thread_info.h
4 * Copyright (C) 2002 Russell King.
5 * Copyright (C) 2012 ARM Ltd.
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.
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.
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/>.
19 #ifndef __ASM_THREAD_INFO_H
20 #define __ASM_THREAD_INFO_H
24 #include <linux/compiler.h>
30 #include <asm/memory.h>
31 #include <asm/stack_pointer.h>
32 #include <asm/types.h>
34 typedef unsigned long mm_segment_t;
37 * low level task data that entry.S needs immediate access to.
40 unsigned long flags; /* low level flags */
41 mm_segment_t addr_limit; /* address limit */
42 #ifdef CONFIG_ARM64_SW_TTBR0_PAN
43 u64 ttbr0; /* saved TTBR0_EL1 */
46 u64 preempt_count; /* 0 => preemptible, <0 => bug */
48 #ifdef CONFIG_CPU_BIG_ENDIAN
59 #define thread_saved_pc(tsk) \
60 ((unsigned long)(tsk->thread.cpu_context.pc))
61 #define thread_saved_sp(tsk) \
62 ((unsigned long)(tsk->thread.cpu_context.sp))
63 #define thread_saved_fp(tsk) \
64 ((unsigned long)(tsk->thread.cpu_context.fp))
66 void arch_setup_new_exec(void);
67 #define arch_setup_new_exec arch_setup_new_exec
69 void arch_release_task_struct(struct task_struct *tsk);
74 * thread information flags:
75 * TIF_SYSCALL_TRACE - syscall trace active
76 * TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace
77 * TIF_SYSCALL_AUDIT - syscall auditing
78 * TIF_SECOMP - syscall secure computing
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)
84 #define TIF_SIGPENDING 0
85 #define TIF_NEED_RESCHED 1
86 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
87 #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */
88 #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */
89 #define TIF_FSCHECK 5 /* Check FS is USER_DS on return */
91 #define TIF_SYSCALL_TRACE 8
92 #define TIF_SYSCALL_AUDIT 9
93 #define TIF_SYSCALL_TRACEPOINT 10
94 #define TIF_SECCOMP 11
95 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */
97 #define TIF_RESTORE_SIGMASK 20
98 #define TIF_SINGLESTEP 21
99 #define TIF_32BIT 22 /* 32bit process */
100 #define TIF_SVE 23 /* Scalable Vector Extension in use */
101 #define TIF_SVE_VL_INHERIT 24 /* Inherit sve_vl_onexec across exec */
102 #define TIF_SSBD 25 /* Wants SSB mitigation */
104 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
105 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
106 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
107 #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
108 #define _TIF_NOHZ (1 << TIF_NOHZ)
109 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
110 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
111 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
112 #define _TIF_SECCOMP (1 << TIF_SECCOMP)
113 #define _TIF_UPROBE (1 << TIF_UPROBE)
114 #define _TIF_FSCHECK (1 << TIF_FSCHECK)
115 #define _TIF_32BIT (1 << TIF_32BIT)
116 #define _TIF_SVE (1 << TIF_SVE)
118 #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
119 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
120 _TIF_UPROBE | _TIF_FSCHECK)
122 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
123 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
126 #define INIT_THREAD_INFO(tsk) \
128 .flags = _TIF_FOREIGN_FPSTATE, \
129 .preempt_count = INIT_PREEMPT_COUNT, \
130 .addr_limit = KERNEL_DS, \
133 #endif /* __KERNEL__ */
134 #endif /* __ASM_THREAD_INFO_H */