[linux-2.6-block.git] / include / asm-parisc / thread_info.h

#ifndef _ASM_PARISC_THREAD_INFO_H
#define _ASM_PARISC_THREAD_INFO_H

#ifdef __KERNEL__

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

struct thread_info {
	struct task_struct *task;	/* main task structure */
	struct exec_domain *exec_domain;/* execution domain */
	unsigned long flags;		/* thread_info flags (see TIF_*) */
	mm_segment_t addr_limit;	/* user-level address space limit */
	__u32 cpu;			/* current CPU */
	int preempt_count;		/* 0=premptable, <0=BUG; will also serve as bh-counter */
	struct restart_block restart_block;
};

#define INIT_THREAD_INFO(tsk)			\
{						\
	.task		= &tsk,			\
	.exec_domain	= &default_exec_domain,	\
	.flags		= 0,			\
	.cpu		= 0,			\
	.addr_limit	= KERNEL_DS,		\
	.preempt_count	= 1,			\
  	.restart_block	= {			\
		.fn = do_no_restart_syscall	\
	}					\
}

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

/* thread information allocation */

#define THREAD_ORDER            2
/* Be sure to hunt all references to this down when you change the size of
 * the kernel stack */
#define THREAD_SIZE             (PAGE_SIZE << THREAD_ORDER)
#define THREAD_SHIFT            (PAGE_SHIFT + THREAD_ORDER)

#define alloc_thread_info(tsk) ((struct thread_info *) \
			__get_free_pages(GFP_KERNEL, THREAD_ORDER))
#define free_thread_info(ti)    free_pages((unsigned long) (ti), THREAD_ORDER)

/* how to get the thread information struct from C */
#define current_thread_info()	((struct thread_info *)mfctl(30))

#endif /* !__ASSEMBLY */

#define PREEMPT_ACTIVE_BIT	28
#define PREEMPT_ACTIVE		(1 << PREEMPT_ACTIVE_BIT)

/*
 * thread information flags
 */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#define TIF_POLLING_NRFLAG	3	/* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_32BIT               4       /* 32 bit binary */
#define TIF_MEMDIE		5
#define TIF_RESTORE_SIGMASK	6	/* restore saved signal mask */

#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
#define _TIF_32BIT		(1 << TIF_32BIT)
#define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)

#define _TIF_USER_WORK_MASK     (_TIF_SIGPENDING | \
                                 _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)

#endif /* __KERNEL__ */

#endif /* _ASM_PARISC_THREAD_INFO_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_PARISC_THREAD_INFO_H
	2	#define _ASM_PARISC_THREAD_INFO_H
	3
	4	#ifdef __KERNEL__
	5
	6	#ifndef __ASSEMBLY__
	7	#include <asm/processor.h>
	8
	9	struct thread_info {
	10	struct task_struct task; / main task structure */
	11	struct exec_domain exec_domain;/ execution domain */
	12	unsigned long flags; /* thread_info flags (see TIF_) /
	13	mm_segment_t addr_limit; /* user-level address space limit */
	14	__u32 cpu; /* current CPU */
dcd497f9	15	int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
1da177e4 LT	16	struct restart_block restart_block;
	17	};
	18
	19	#define INIT_THREAD_INFO(tsk) \
	20	{ \
	21	.task = &tsk, \
	22	.exec_domain = &default_exec_domain, \
	23	.flags = 0, \
	24	.cpu = 0, \
	25	.addr_limit = KERNEL_DS, \
	26	.preempt_count = 1, \
	27	.restart_block = { \
	28	.fn = do_no_restart_syscall \
	29	} \
	30	}
	31
	32	#define init_thread_info (init_thread_union.thread_info)
	33	#define init_stack (init_thread_union.stack)
	34
	35	/* thread information allocation */
	36
	37	#define THREAD_ORDER 2
	38	/* Be sure to hunt all references to this down when you change the size of
	39	* the kernel stack */
	40	#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
	41	#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER)
	42
	43	#define alloc_thread_info(tsk) ((struct thread_info *) \
	44	__get_free_pages(GFP_KERNEL, THREAD_ORDER))
	45	#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
1da177e4 LT	46
	47	/* how to get the thread information struct from C */
	48	#define current_thread_info() ((struct thread_info *)mfctl(30))
	49
	50	#endif /* !__ASSEMBLY */
	51
50a34dbd KM	52	#define PREEMPT_ACTIVE_BIT 28
50a34dbd KM	53	#define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT)
1da177e4 LT	54
	55	/*
	56	* thread information flags
	57	*/
	58	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
a583f1b5 SE	59	#define TIF_SIGPENDING 1 /* signal pending */
	60	#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
	61	#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */
	62	#define TIF_32BIT 4 /* 32 bit binary */
	63	#define TIF_MEMDIE 5
	64	#define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */
1da177e4 LT	65
1da177e4 LT	66	#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
1da177e4 LT	67	#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
	68	#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
	69	#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
	70	#define _TIF_32BIT (1 << TIF_32BIT)
4650f0a5	71	#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
1da177e4	72
a583f1b5	73	#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING \| \
4650f0a5	74	_TIF_NEED_RESCHED \| _TIF_RESTORE_SIGMASK)
1da177e4 LT	75
	76	#endif /* __KERNEL__ */
	77
	78	#endif /* _ASM_PARISC_THREAD_INFO_H */