[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / score / include / asm / thread_info.h

#ifndef _ASM_SCORE_THREAD_INFO_H
#define _ASM_SCORE_THREAD_INFO_H

#ifdef __KERNEL__

#define KU_MASK	0x08
#define KU_USER	0x08
#define KU_KERN	0x00

#include <asm/page.h>
#include <linux/const.h>

/* thread information allocation */
#define THREAD_SIZE_ORDER	(1)
#define THREAD_SIZE		(PAGE_SIZE << THREAD_SIZE_ORDER)
#define THREAD_MASK		(THREAD_SIZE - _AC(1,UL))

#ifndef __ASSEMBLY__

#include <asm/processor.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 */
	unsigned long		tp_value;	/* thread pointer */
	__u32			cpu;		/* current CPU */

	/* 0 => preemptable, < 0 => BUG */
	int			preempt_count;

	/*
	 * thread address space:
	 * 0-0xBFFFFFFF for user-thead
	 * 0-0xFFFFFFFF for kernel-thread
	 */
	mm_segment_t		addr_limit;
	struct restart_block	restart_block;
	struct pt_regs		*regs;
};

/*
 * macros/functions for gaining access to the thread information structure
 *
 * preempt_count needs to be 1 initially, until the scheduler is functional.
 */
#define INIT_THREAD_INFO(tsk)			\
{						\
	.task		= &tsk,			\
	.exec_domain	= &default_exec_domain,	\
	.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. */
register struct thread_info *__current_thread_info __asm__("r28");
#define current_thread_info()	__current_thread_info

#endif /* !__ASSEMBLY__ */

#define PREEMPT_ACTIVE		0x10000000

/*
 * thread information flags
 * - these are process state flags that various assembly files may need to
 *   access
 * - pending work-to-be-done flags are in LSW
 * - other flags in MSW
 */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#define TIF_NOTIFY_RESUME	5	/* callback before returning to user */
#define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
#define TIF_MEMDIE		18	/* is terminating due to OOM killer */

#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_RESUME	(1<<TIF_NOTIFY_RESUME)

#define _TIF_WORK_MASK		(0x0000ffff)

#endif /* __KERNEL__ */

#endif /* _ASM_SCORE_THREAD_INFO_H */
Commit	Line	Data
6bc9a396 CL	1	#ifndef _ASM_SCORE_THREAD_INFO_H
	2	#define _ASM_SCORE_THREAD_INFO_H
	3
	4	#ifdef __KERNEL__
	5
	6	#define KU_MASK 0x08
	7	#define KU_USER 0x08
	8	#define KU_KERN 0x00
	9
0dab1006 TA	10	#include <asm/page.h>
	11	#include <linux/const.h>
	12
	13	/* thread information allocation */
c4e26890 TG	14	#define THREAD_SIZE_ORDER (1)
	15	#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
	16	#define THREAD_MASK (THREAD_SIZE - _AC(1,UL))
0dab1006	17
6bc9a396 CL	18	#ifndef __ASSEMBLY__
	19
	20	#include <asm/processor.h>
	21
	22	/*
	23	* low level task data that entry.S needs immediate access to
	24	* - this struct should fit entirely inside of one cache line
	25	* - this struct shares the supervisor stack pages
	26	* - if the contents of this structure are changed, the assembly constants
	27	* must also be changed
	28	*/
	29	struct thread_info {
	30	struct task_struct task; / main task structure */
	31	struct exec_domain exec_domain; / execution domain */
	32	unsigned long flags; /* low level flags */
	33	unsigned long tp_value; /* thread pointer */
	34	__u32 cpu; /* current CPU */
	35
	36	/* 0 => preemptable, < 0 => BUG */
	37	int preempt_count;
	38
	39	/*
	40	* thread address space:
	41	* 0-0xBFFFFFFF for user-thead
	42	* 0-0xFFFFFFFF for kernel-thread
	43	*/
	44	mm_segment_t addr_limit;
	45	struct restart_block restart_block;
	46	struct pt_regs *regs;
	47	};
	48
	49	/*
	50	* macros/functions for gaining access to the thread information structure
	51	*
	52	* preempt_count needs to be 1 initially, until the scheduler is functional.
	53	*/
	54	#define INIT_THREAD_INFO(tsk) \
	55	{ \
	56	.task = &tsk, \
	57	.exec_domain = &default_exec_domain, \
	58	.cpu = 0, \
	59	.preempt_count = 1, \
	60	.addr_limit = KERNEL_DS, \
	61	.restart_block = { \
	62	.fn = do_no_restart_syscall, \
	63	}, \
	64	}
	65
	66	#define init_thread_info (init_thread_union.thread_info)
	67	#define init_stack (init_thread_union.stack)
	68
	69	/* How to get the thread information struct from C. */
	70	register struct thread_info *__current_thread_info __asm__("r28");
	71	#define current_thread_info() __current_thread_info
	72
6bc9a396 CL	73	#endif /* !__ASSEMBLY__ */
	74
	75	#define PREEMPT_ACTIVE 0x10000000
	76
	77	/*
	78	* thread information flags
	79	* - these are process state flags that various assembly files may need to
	80	* access
	81	* - pending work-to-be-done flags are in LSW
	82	* - other flags in MSW
	83	*/
	84	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
	85	#define TIF_SIGPENDING 1 /* signal pending */
	86	#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
9973affe	87	#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
6bc9a396	88	#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
0ddc9324	89	#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
6bc9a396 CL	90
	91	#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
	92	#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
	93	#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
9973affe	94	#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
6bc9a396 CL	95
	96	#define _TIF_WORK_MASK (0x0000ffff)
	97
	98	#endif /* __KERNEL__ */
	99
	100	#endif /* _ASM_SCORE_THREAD_INFO_H */