thread_info.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 4 */
 5
 6#ifndef __UM_THREAD_INFO_H
 7#define __UM_THREAD_INFO_H
 8
 9#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
10#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
11
12#ifndef __ASSEMBLER__
13
14#include <asm/types.h>
15#include <asm/page.h>
16#include <asm/segment.h>
17#include <sysdep/ptrace_user.h>
18
19struct thread_info {
20	unsigned long		flags;		/* low level flags */
21	__u32			cpu;		/* current CPU */
22	int			preempt_count;  /* 0 => preemptable,
23						   <0 => BUG */
24};
25
26#define INIT_THREAD_INFO(tsk)			\
27{						\
28	.flags =		0,		\
29	.cpu =		0,			\
30	.preempt_count = INIT_PREEMPT_COUNT,	\
31}
32
33#endif
34
35#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
36#define TIF_SIGPENDING		1	/* signal pending */
37#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
38#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */
39#define TIF_RESTART_BLOCK	4
40#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
41#define TIF_SYSCALL_AUDIT	6
42#define TIF_RESTORE_SIGMASK	7
43#define TIF_NOTIFY_RESUME	8
44#define TIF_SECCOMP		9	/* secure computing */
45#define TIF_SINGLESTEP		10	/* single stepping userspace */
46#define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
47
48
49#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
50#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
51#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
52#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
53#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
54#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
55#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
56#define _TIF_SECCOMP		(1 << TIF_SECCOMP)
57#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
58
59#define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL | \
60				 _TIF_NOTIFY_RESUME)
61
62#endif