Contributors: 12
Author Tokens Token Proportion Commits Commit Proportion
Jeff Dike 139 64.95% 6 30.00%
Paolo 'Blaisorblade' Giarrusso 16 7.48% 2 10.00%
Thomas Meyer 11 5.14% 1 5.00%
Richard Weinberger 10 4.67% 3 15.00%
Jens Axboe 9 4.21% 1 5.00%
Mickaël Salaün 9 4.21% 1 5.00%
David Howells 8 3.74% 1 5.00%
Andrea Arcangeli 4 1.87% 1 5.00%
Al Viro 4 1.87% 1 5.00%
Alex Dewar 2 0.93% 1 5.00%
Jesper Juhl 1 0.47% 1 5.00%
Andreas Dilger 1 0.47% 1 5.00%
Total 214 20 


/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 */

#ifndef __UM_THREAD_INFO_H
#define __UM_THREAD_INFO_H

#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)

#ifndef __ASSEMBLY__

#include <asm/types.h>
#include <asm/page.h>
#include <asm/segment.h>
#include <sysdep/ptrace_user.h>

struct thread_info {
	struct task_struct	*task;		/* main task structure */
	unsigned long		flags;		/* low level flags */
	__u32			cpu;		/* current CPU */
	int			preempt_count;  /* 0 => preemptable,
						   <0 => BUG */
	mm_segment_t		addr_limit;	/* thread address space:
					 	   0-0xBFFFFFFF for user
						   0-0xFFFFFFFF for kernel */
	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
	unsigned long aux_fp_regs[FP_SIZE];	/* auxiliary fp_regs to save/restore
						   them out-of-band */
};

#define INIT_THREAD_INFO(tsk)			\
{						\
	.task =		&tsk,			\
	.flags =		0,		\
	.cpu =		0,			\
	.preempt_count = INIT_PREEMPT_COUNT,	\
	.addr_limit =	KERNEL_DS,		\
	.real_thread = NULL,			\
}

/* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void)
{
	struct thread_info *ti;
	unsigned long mask = THREAD_SIZE - 1;
	void *p;

	asm volatile ("" : "=r" (p) : "0" (&ti));
	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
	return ti;
}

#endif

#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */
#define TIF_RESTART_BLOCK	4
#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
#define TIF_SYSCALL_AUDIT	6
#define TIF_RESTORE_SIGMASK	7
#define TIF_NOTIFY_RESUME	8
#define TIF_SECCOMP		9	/* secure computing */

#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP		(1 << TIF_SECCOMP)

#endif