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 */
45 int preempt_count
; /* 0 => preemptable, <0 => bug */
48 #define thread_saved_pc(tsk) \
49 ((unsigned long)(tsk->thread.cpu_context.pc))
50 #define thread_saved_sp(tsk) \
51 ((unsigned long)(tsk->thread.cpu_context.sp))
52 #define thread_saved_fp(tsk) \
53 ((unsigned long)(tsk->thread.cpu_context.fp))
55 void arch_setup_new_exec(void);
56 #define arch_setup_new_exec arch_setup_new_exec
58 void arch_release_task_struct(struct task_struct
*tsk
);
63 * thread information flags:
64 * TIF_SYSCALL_TRACE - syscall trace active
65 * TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace
66 * TIF_SYSCALL_AUDIT - syscall auditing
67 * TIF_SECOMP - syscall secure computing
68 * TIF_SIGPENDING - signal pending
69 * TIF_NEED_RESCHED - rescheduling necessary
70 * TIF_NOTIFY_RESUME - callback before returning to user
71 * TIF_USEDFPU - FPU was used by this task this quantum (SMP)
73 #define TIF_SIGPENDING 0
74 #define TIF_NEED_RESCHED 1
75 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
76 #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */
77 #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */
78 #define TIF_FSCHECK 5 /* Check FS is USER_DS on return */
80 #define TIF_SYSCALL_TRACE 8
81 #define TIF_SYSCALL_AUDIT 9
82 #define TIF_SYSCALL_TRACEPOINT 10
83 #define TIF_SECCOMP 11
84 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */
86 #define TIF_RESTORE_SIGMASK 20
87 #define TIF_SINGLESTEP 21
88 #define TIF_32BIT 22 /* 32bit process */
89 #define TIF_SVE 23 /* Scalable Vector Extension in use */
90 #define TIF_SVE_VL_INHERIT 24 /* Inherit sve_vl_onexec across exec */
91 #define TIF_SSBD 25 /* Wants SSB mitigation */
93 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
94 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
95 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
96 #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
97 #define _TIF_NOHZ (1 << TIF_NOHZ)
98 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
99 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
100 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
101 #define _TIF_SECCOMP (1 << TIF_SECCOMP)
102 #define _TIF_UPROBE (1 << TIF_UPROBE)
103 #define _TIF_FSCHECK (1 << TIF_FSCHECK)
104 #define _TIF_32BIT (1 << TIF_32BIT)
105 #define _TIF_SVE (1 << TIF_SVE)
107 #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
108 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
109 _TIF_UPROBE | _TIF_FSCHECK)
111 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
112 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
115 #define INIT_THREAD_INFO(tsk) \
117 .flags = _TIF_FOREIGN_FPSTATE, \
118 .preempt_count = INIT_PREEMPT_COUNT, \
119 .addr_limit = KERNEL_DS, \
122 #endif /* __KERNEL__ */
123 #endif /* __ASM_THREAD_INFO_H */