[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / arch / um / include / asm / thread_info.h

/*
 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#ifndef __UM_THREAD_INFO_H
#define __UM_THREAD_INFO_H

#ifndef __ASSEMBLY__

#include <asm/types.h>
#include <asm/page.h>
#include <asm/segment.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 */
};

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

#define init_thread_info	(init_thread_union.thread_info)
#define init_stack		(init_thread_union.stack)

#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
/* 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;
}

#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER

#endif

#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#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_MEMDIE		(1 << TIF_MEMDIE)
#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP		(1 << TIF_SECCOMP)

#endif
Commit	Line	Data
a5a678c8 JD	1	/*
a5a678c8 JD	2	* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
1da177e4 LT	3	* Licensed under the GPL
	4	*/
	5
	6	#ifndef __UM_THREAD_INFO_H
	7	#define __UM_THREAD_INFO_H
	8
	9	#ifndef __ASSEMBLY__
	10
1da177e4	11	#include <asm/types.h>
8192ab42	12	#include <asm/page.h>
f8d65d27	13	#include <asm/segment.h>
1da177e4 LT	14
	15	struct thread_info {
	16	struct task_struct task; / main task structure */
1da177e4 LT	17	unsigned long flags; /* low level flags */
1da177e4 LT	18	__u32 cpu; /* current CPU */
dcd497f9	19	int preempt_count; /* 0 => preemptable,
1da177e4 LT	20	<0 => BUG */
	21	mm_segment_t addr_limit; /* thread address space:
	22	0-0xBFFFFFFF for user
	23	0-0xFFFFFFFF for kernel */
c14b8494	24	struct thread_info real_thread; / Points to non-IRQ stack */
1da177e4 LT	25	};
	26
	27	#define INIT_THREAD_INFO(tsk) \
	28	{ \
4d338e1a	29	.task = &tsk, \
4d338e1a AV	30	.flags = 0, \
4d338e1a AV	31	.cpu = 0, \
c99e6efe	32	.preempt_count = INIT_PREEMPT_COUNT, \
4d338e1a	33	.addr_limit = KERNEL_DS, \
c14b8494	34	.real_thread = NULL, \
1da177e4 LT	35	}
	36
	37	#define init_thread_info (init_thread_union.thread_info)
	38	#define init_stack (init_thread_union.stack)
	39
b3461034	40	#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
1da177e4 LT	41	/* how to get the thread information struct from C */
	42	static inline struct thread_info *current_thread_info(void)
	43	{
	44	struct thread_info *ti;
b3461034	45	unsigned long mask = THREAD_SIZE - 1;
534e3adb RW	46	void *p;
	47
	48	asm volatile ("" : "=r" (p) : "0" (&ti));
	49	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
1da177e4 LT	50	return ti;
	51	}
	52
b69c49b7	53	#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
1da177e4	54
1da177e4 LT	55	#endif
1da177e4 LT	56
1da177e4 LT	57	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
	58	#define TIF_SIGPENDING 1 /* signal pending */
	59	#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
0ddc9324 AD	60	#define TIF_RESTART_BLOCK 4
0ddc9324 AD	61	#define TIF_MEMDIE 5 /* is terminating due to OOM killer */
79d20b14	62	#define TIF_SYSCALL_AUDIT 6
2fc10620	63	#define TIF_RESTORE_SIGMASK 7
d50349b0	64	#define TIF_NOTIFY_RESUME 8
c50b4659	65	#define TIF_SECCOMP 9 /* secure computing */
1da177e4 LT	66
	67	#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
	68	#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
	69	#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
79d20b14 JD	70	#define _TIF_MEMDIE (1 << TIF_MEMDIE)
79d20b14 JD	71	#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
c50b4659	72	#define _TIF_SECCOMP (1 << TIF_SECCOMP)
1da177e4 LT	73
1da177e4 LT	74	#endif