Linux kernel mirror (for testing)
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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 */
33struct 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
45void arch_release_task_struct(struct task_struct *tsk);
46int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
47
48void 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 */