1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * S390 version 4 * Copyright IBM Corp. 2002, 2006 5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) 6 */ 7 8 #ifndef _ASM_THREAD_INFO_H 9 #define _ASM_THREAD_INFO_H 10 11 #include <linux/const.h> 12 13 /* 14 * Size of kernel stack for each process 15 */ 16 #define THREAD_SIZE_ORDER 2 17 #define ASYNC_ORDER 2 18 19 #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) 20 #define ASYNC_SIZE (PAGE_SIZE << ASYNC_ORDER) 21 22 #ifndef __ASSEMBLY__ 23 #include <asm/lowcore.h> 24 #include <asm/page.h> 25 #include <asm/processor.h> 26 27 /* 28 * low level task data that entry.S needs immediate access to 29 * - this struct should fit entirely inside of one cache line 30 * - this struct shares the supervisor stack pages 31 * - if the contents of this structure are changed, the assembly constants must also be changed 32 */ 33 struct thread_info { 34 unsigned long flags; /* low level flags */ 35 }; 36 37 /* 38 * macros/functions for gaining access to the thread information structure 39 */ 40 #define INIT_THREAD_INFO(tsk) \ 41 { \ 42 .flags = 0, \ 43 } 44 45 void arch_release_task_struct(struct task_struct *tsk); 46 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); 47 48 void arch_setup_new_exec(void); 49 #define arch_setup_new_exec arch_setup_new_exec 50 51 #endif 52 53 /* 54 * thread information flags bit numbers 55 */ 56 /* _TIF_WORK bits */ 57 #define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ 58 #define TIF_SIGPENDING 1 /* signal pending */ 59 #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 60 #define TIF_UPROBE 3 /* breakpointed or single-stepping */ 61 #define TIF_GUARDED_STORAGE 4 /* load guarded storage control block */ 62 #define TIF_PATCH_PENDING 5 /* pending live patching update */ 63 #define TIF_PGSTE 6 /* New mm's will use 4K page tables */ 64 #define TIF_ISOLATE_BP 8 /* Run process with isolated BP */ 65 #define TIF_ISOLATE_BP_GUEST 9 /* Run KVM guests with isolated BP */ 66 67 #define TIF_31BIT 16 /* 32bit process */ 68 #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ 69 #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ 70 #define TIF_SINGLE_STEP 19 /* This task is single stepped */ 71 #define TIF_BLOCK_STEP 20 /* This task is block stepped */ 72 #define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ 73 74 /* _TIF_TRACE bits */ 75 #define TIF_SYSCALL_TRACE 24 /* syscall trace active */ 76 #define TIF_SYSCALL_AUDIT 25 /* syscall auditing active */ 77 #define TIF_SECCOMP 26 /* secure computing */ 78 #define TIF_SYSCALL_TRACEPOINT 27 /* syscall tracepoint instrumentation */ 79 80 #define _TIF_NOTIFY_RESUME _BITUL(TIF_NOTIFY_RESUME) 81 #define _TIF_SIGPENDING _BITUL(TIF_SIGPENDING) 82 #define _TIF_NEED_RESCHED _BITUL(TIF_NEED_RESCHED) 83 #define _TIF_UPROBE _BITUL(TIF_UPROBE) 84 #define _TIF_GUARDED_STORAGE _BITUL(TIF_GUARDED_STORAGE) 85 #define _TIF_PATCH_PENDING _BITUL(TIF_PATCH_PENDING) 86 #define _TIF_ISOLATE_BP _BITUL(TIF_ISOLATE_BP) 87 #define _TIF_ISOLATE_BP_GUEST _BITUL(TIF_ISOLATE_BP_GUEST) 88 89 #define _TIF_31BIT _BITUL(TIF_31BIT) 90 #define _TIF_SINGLE_STEP _BITUL(TIF_SINGLE_STEP) 91 92 #define _TIF_SYSCALL_TRACE _BITUL(TIF_SYSCALL_TRACE) 93 #define _TIF_SYSCALL_AUDIT _BITUL(TIF_SYSCALL_AUDIT) 94 #define _TIF_SECCOMP _BITUL(TIF_SECCOMP) 95 #define _TIF_SYSCALL_TRACEPOINT _BITUL(TIF_SYSCALL_TRACEPOINT) 96 97 #endif /* _ASM_THREAD_INFO_H */ 98