1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Based on arch/arm/include/asm/thread_info.h 4 * 5 * Copyright (C) 2002 Russell King. 6 * Copyright (C) 2012 ARM Ltd. 7 */ 8 #ifndef __ASM_THREAD_INFO_H 9 #define __ASM_THREAD_INFO_H 10 11 #include <linux/compiler.h> 12 13 #ifndef __ASSEMBLY__ 14 15 struct task_struct; 16 17 #include <asm/memory.h> 18 #include <asm/stack_pointer.h> 19 #include <asm/types.h> 20 21 typedef unsigned long mm_segment_t; 22 23 /* 24 * low level task data that entry.S needs immediate access to. 25 */ 26 struct thread_info { 27 unsigned long flags; /* low level flags */ 28 mm_segment_t addr_limit; /* address limit */ 29 #ifdef CONFIG_ARM64_SW_TTBR0_PAN 30 u64 ttbr0; /* saved TTBR0_EL1 */ 31 #endif 32 union { 33 u64 preempt_count; /* 0 => preemptible, <0 => bug */ 34 struct { 35 #ifdef CONFIG_CPU_BIG_ENDIAN 36 u32 need_resched; 37 u32 count; 38 #else 39 u32 count; 40 u32 need_resched; 41 #endif 42 } preempt; 43 }; 44 }; 45 46 #define thread_saved_pc(tsk) \ 47 ((unsigned long)(tsk->thread.cpu_context.pc)) 48 #define thread_saved_sp(tsk) \ 49 ((unsigned long)(tsk->thread.cpu_context.sp)) 50 #define thread_saved_fp(tsk) \ 51 ((unsigned long)(tsk->thread.cpu_context.fp)) 52 53 void arch_setup_new_exec(void); 54 #define arch_setup_new_exec arch_setup_new_exec 55 56 void arch_release_task_struct(struct task_struct *tsk); 57 58 #endif 59 60 #define TIF_SIGPENDING 0 /* signal pending */ 61 #define TIF_NEED_RESCHED 1 /* rescheduling necessary */ 62 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ 63 #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */ 64 #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */ 65 #define TIF_FSCHECK 5 /* Check FS is USER_DS on return */ 66 #define TIF_NOHZ 7 67 #define TIF_SYSCALL_TRACE 8 /* syscall trace active */ 68 #define TIF_SYSCALL_AUDIT 9 /* syscall auditing */ 69 #define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */ 70 #define TIF_SECCOMP 11 /* syscall secure computing */ 71 #define TIF_SYSCALL_EMU 12 /* syscall emulation active */ 72 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ 73 #define TIF_FREEZE 19 74 #define TIF_RESTORE_SIGMASK 20 75 #define TIF_SINGLESTEP 21 76 #define TIF_32BIT 22 /* 32bit process */ 77 #define TIF_SVE 23 /* Scalable Vector Extension in use */ 78 #define TIF_SVE_VL_INHERIT 24 /* Inherit sve_vl_onexec across exec */ 79 #define TIF_SSBD 25 /* Wants SSB mitigation */ 80 #define TIF_TAGGED_ADDR 26 /* Allow tagged user addresses */ 81 82 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 83 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 84 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 85 #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE) 86 #define _TIF_NOHZ (1 << TIF_NOHZ) 87 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 88 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 89 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) 90 #define _TIF_SECCOMP (1 << TIF_SECCOMP) 91 #define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) 92 #define _TIF_UPROBE (1 << TIF_UPROBE) 93 #define _TIF_FSCHECK (1 << TIF_FSCHECK) 94 #define _TIF_32BIT (1 << TIF_32BIT) 95 #define _TIF_SVE (1 << TIF_SVE) 96 97 #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ 98 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ 99 _TIF_UPROBE | _TIF_FSCHECK) 100 101 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ 102 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ 103 _TIF_NOHZ | _TIF_SYSCALL_EMU) 104 105 #define INIT_THREAD_INFO(tsk) \ 106 { \ 107 .flags = _TIF_FOREIGN_FPSTATE, \ 108 .preempt_count = INIT_PREEMPT_COUNT, \ 109 .addr_limit = KERNEL_DS, \ 110 } 111 112 #endif /* __ASM_THREAD_INFO_H */ 113
