[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-sh64 / thread_info.h

#ifndef __ASM_SH64_THREAD_INFO_H
#define __ASM_SH64_THREAD_INFO_H

/*
 * SuperH 5 version
 * Copyright (C) 2003  Paul Mundt
 */

#ifdef __KERNEL__

#ifndef __ASSEMBLY__
#include <asm/registers.h>

/*
 * low level task data that entry.S needs immediate access to
 * - this struct should fit entirely inside of one cache line
 * - this struct shares the supervisor stack pages
 * - if the contents of this structure are changed, the assembly constants must also be changed
 */
struct thread_info {
	struct task_struct	*task;		/* main task structure */
	struct exec_domain	*exec_domain;	/* execution domain */
	unsigned long		flags;		/* low level flags */
	/* Put the 4 32-bit fields together to make asm offsetting easier. */
	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
	__u16			cpu;

	mm_segment_t		addr_limit;
	struct restart_block	restart_block;

	__u8			supervisor_stack[0];
};

/*
 * macros/functions for gaining access to the thread information structure
 */
#define INIT_THREAD_INFO(tsk)			\
{						\
	.task		= &tsk,			\
	.exec_domain	= &default_exec_domain,	\
	.flags		= 0,			\
	.cpu		= 0,			\
	.preempt_count	= 1,			\
	.addr_limit     = KERNEL_DS,            \
	.restart_block	= {			\
		.fn = do_no_restart_syscall,	\
	},					\
}

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

/* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void)
{
	struct thread_info *ti;

	__asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti));

	return ti;
}

/* thread information allocation */


#define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
#define get_thread_info(ti) get_task_struct((ti)->task)
#define put_thread_info(ti) put_task_struct((ti)->task)

#endif /* __ASSEMBLY__ */

#define THREAD_SIZE  8192

#define PREEMPT_ACTIVE		0x10000000

/* thread information flags */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		2	/* signal pending */
#define TIF_NEED_RESCHED	3	/* rescheduling necessary */
#define TIF_MEMDIE		4


#endif /* __KERNEL__ */

#endif /* __ASM_SH64_THREAD_INFO_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_SH64_THREAD_INFO_H
	2	#define __ASM_SH64_THREAD_INFO_H
	3
	4	/*
	5	* SuperH 5 version
	6	* Copyright (C) 2003 Paul Mundt
	7	*/
	8
	9	#ifdef __KERNEL__
	10
	11	#ifndef __ASSEMBLY__
	12	#include <asm/registers.h>
	13
	14	/*
	15	* low level task data that entry.S needs immediate access to
	16	* - this struct should fit entirely inside of one cache line
	17	* - this struct shares the supervisor stack pages
	18	* - if the contents of this structure are changed, the assembly constants must also be changed
	19	*/
	20	struct thread_info {
	21	struct task_struct task; / main task structure */
	22	struct exec_domain exec_domain; / execution domain */
	23	unsigned long flags; /* low level flags */
	24	/* Put the 4 32-bit fields together to make asm offsetting easier. */
dcd497f9	25	int preempt_count; /* 0 => preemptable, <0 => BUG */
1da177e4 LT	26	__u16 cpu;
	27
	28	mm_segment_t addr_limit;
	29	struct restart_block restart_block;
	30
	31	__u8 supervisor_stack[0];
	32	};
	33
	34	/*
	35	* macros/functions for gaining access to the thread information structure
	36	*/
	37	#define INIT_THREAD_INFO(tsk) \
	38	{ \
	39	.task = &tsk, \
	40	.exec_domain = &default_exec_domain, \
	41	.flags = 0, \
	42	.cpu = 0, \
	43	.preempt_count = 1, \
	44	.addr_limit = KERNEL_DS, \
	45	.restart_block = { \
	46	.fn = do_no_restart_syscall, \
	47	}, \
	48	}
	49
	50	#define init_thread_info (init_thread_union.thread_info)
	51	#define init_stack (init_thread_union.stack)
	52
	53	/* how to get the thread information struct from C */
	54	static inline struct thread_info *current_thread_info(void)
	55	{
	56	struct thread_info *ti;
	57
	58	__asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti));
	59
	60	return ti;
	61	}
	62
	63	/* thread information allocation */
	64
	65
	66
	67	#define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
	68	#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
	69	#define get_thread_info(ti) get_task_struct((ti)->task)
	70	#define put_thread_info(ti) put_task_struct((ti)->task)
	71
	72	#endif /* __ASSEMBLY__ */
	73
	74	#define THREAD_SIZE 8192
	75
37053cc8	76	#define PREEMPT_ACTIVE 0x10000000
1da177e4 LT	77
	78	/* thread information flags */
	79	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
	80	#define TIF_SIGPENDING 2 /* signal pending */
	81	#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
	82	#define TIF_MEMDIE 4
	83
	84
	85	#endif /* __KERNEL__ */
	86
	87	#endif /* __ASM_SH64_THREAD_INFO_H */