[linux-block.git] / arch / ia64 / include / asm / thread_info.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2002-2003 Hewlett-Packard Co
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 */
#ifndef _ASM_IA64_THREAD_INFO_H
#define _ASM_IA64_THREAD_INFO_H

#ifndef ASM_OFFSETS_C
#include <asm/asm-offsets.h>
#endif
#include <asm/processor.h>
#include <asm/ptrace.h>

#ifndef __ASSEMBLY__

/*
 * On IA-64, we want to keep the task structure and kernel stack together, so they can be
 * mapped by a single TLB entry and so they can be addressed by the "current" pointer
 * without having to do pointer masking.
 */
struct thread_info {
	struct task_struct *task;	/* XXX not really needed, except for dup_task_struct() */
	__u32 flags;			/* thread_info flags (see TIF_*) */
	__u32 cpu;			/* current CPU */
	__u32 last_cpu;			/* Last CPU thread ran on */
	__u32 status;			/* Thread synchronous flags */
	mm_segment_t addr_limit;	/* user-level address space limit */
	int preempt_count;		/* 0=premptable, <0=BUG; will also serve as bh-counter */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
	__u64 utime;
	__u64 stime;
	__u64 gtime;
	__u64 hardirq_time;
	__u64 softirq_time;
	__u64 idle_time;
	__u64 ac_stamp;
	__u64 ac_leave;
	__u64 ac_stime;
	__u64 ac_utime;
#endif
};

#define THREAD_SIZE			KERNEL_STACK_SIZE

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

#ifndef ASM_OFFSETS_C
/* how to get the thread information struct from C */
#define current_thread_info()	((struct thread_info *) ((char *) current + IA64_TASK_SIZE))
#define alloc_thread_stack_node(tsk, node)	\
		((unsigned long *) ((char *) (tsk) + IA64_TASK_SIZE))
#define task_thread_info(tsk)	((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
#else
#define current_thread_info()	((struct thread_info *) 0)
#define alloc_thread_stack_node(tsk, node)	((unsigned long *) 0)
#define task_thread_info(tsk)	((struct thread_info *) 0)
#endif
#define free_thread_stack(tsk)	/* nothing */
#define task_stack_page(tsk)	((void *)(tsk))

#define __HAVE_THREAD_FUNCTIONS
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#define setup_thread_stack(p, org)			\
	*task_thread_info(p) = *task_thread_info(org);	\
	task_thread_info(p)->ac_stime = 0;		\
	task_thread_info(p)->ac_utime = 0;		\
	task_thread_info(p)->task = (p);
#else
#define setup_thread_stack(p, org) \
	*task_thread_info(p) = *task_thread_info(org); \
	task_thread_info(p)->task = (p);
#endif
#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)

#define alloc_task_struct_node(node)						\
({										\
	struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP,	\
					     KERNEL_STACK_SIZE_ORDER);		\
	struct task_struct *ret = page ? page_address(page) : NULL;		\
										\
	ret;									\
})
#define free_task_struct(tsk)	free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER)

#endif /* !__ASSEMBLY */

/*
 * thread information flags
 * - these are process state flags that various assembly files may need to access
 * - pending work-to-be-done flags are in least-significant 16 bits, other flags
 *   in top 16 bits
 */
#define TIF_SIGPENDING		0	/* signal pending */
#define TIF_NEED_RESCHED	1	/* rescheduling necessary */
#define TIF_SYSCALL_TRACE	2	/* syscall trace active */
#define TIF_SYSCALL_AUDIT	3	/* syscall auditing active */
#define TIF_SINGLESTEP		4	/* restore singlestep on return to user mode */
#define TIF_NOTIFY_RESUME	6	/* resumption notification requested */
#define TIF_MEMDIE		17	/* is terminating due to OOM killer */
#define TIF_MCA_INIT		18	/* this task is processing MCA or INIT */
#define TIF_DB_DISABLED		19	/* debug trap disabled for fsyscall */
#define TIF_RESTORE_RSE		21	/* user RBS is newer than kernel RBS */
#define TIF_POLLING_NRFLAG	22	/* idle is polling for TIF_NEED_RESCHED */

#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
#define _TIF_SYSCALL_TRACEAUDIT	(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP)
#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
#define _TIF_MCA_INIT		(1 << TIF_MCA_INIT)
#define _TIF_DB_DISABLED	(1 << TIF_DB_DISABLED)
#define _TIF_RESTORE_RSE	(1 << TIF_RESTORE_RSE)
#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)

/* "work to do on user-return" bits */
#define TIF_ALLWORK_MASK	(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\
				 _TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE)
/* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
#define TIF_WORK_MASK		(TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))

#endif /* _ASM_IA64_THREAD_INFO_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* Copyright (C) 2002-2003 Hewlett-Packard Co
	4	* David Mosberger-Tang <davidm@hpl.hp.com>
	5	*/
	6	#ifndef _ASM_IA64_THREAD_INFO_H
	7	#define _ASM_IA64_THREAD_INFO_H
	8
82f1b07b	9	#ifndef ASM_OFFSETS_C
0013a854	10	#include <asm/asm-offsets.h>
82f1b07b	11	#endif
1da177e4 LT	12	#include <asm/processor.h>
	13	#include <asm/ptrace.h>
	14
1da177e4 LT	15	#ifndef __ASSEMBLY__
	16
	17	/*
	18	* On IA-64, we want to keep the task structure and kernel stack together, so they can be
	19	* mapped by a single TLB entry and so they can be addressed by the "current" pointer
	20	* without having to do pointer masking.
	21	*/
	22	struct thread_info {
	23	struct task_struct task; / XXX not really needed, except for dup_task_struct() */
1da177e4 LT	24	__u32 flags; /* thread_info flags (see TIF_) /
1da177e4 LT	25	__u32 cpu; /* current CPU */
e08e6c52	26	__u32 last_cpu; /* Last CPU thread ran on */
495ab9c0	27	__u32 status; /* Thread synchronous flags */
1da177e4	28	mm_segment_t addr_limit; /* user-level address space limit */
dcd497f9	29	int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
abf917cd	30	#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
7dd58230 FW	31	__u64 utime;
	32	__u64 stime;
	33	__u64 gtime;
	34	__u64 hardirq_time;
	35	__u64 softirq_time;
	36	__u64 idle_time;
b64f34cd HS	37	__u64 ac_stamp;
	38	__u64 ac_leave;
	39	__u64 ac_stime;
	40	__u64 ac_utime;
	41	#endif
1da177e4 LT	42	};
	43
	44	#define THREAD_SIZE KERNEL_STACK_SIZE
	45
	46	#define INIT_THREAD_INFO(tsk) \
	47	{ \
	48	.task = &tsk, \
1da177e4 LT	49	.flags = 0, \
	50	.cpu = 0, \
	51	.addr_limit = KERNEL_DS, \
c99e6efe	52	.preempt_count = INIT_PREEMPT_COUNT, \
1da177e4 LT	53	}
1da177e4 LT	54
82f1b07b	55	#ifndef ASM_OFFSETS_C
1da177e4 LT	56	/* how to get the thread information struct from C */
1da177e4 LT	57	#define current_thread_info() ((struct thread_info ) ((char ) current + IA64_TASK_SIZE))
b235beea LT	58	#define alloc_thread_stack_node(tsk, node) \
b235beea LT	59	((unsigned long ) ((char ) (tsk) + IA64_TASK_SIZE))
ab03591d	60	#define task_thread_info(tsk) ((struct thread_info ) ((char ) (tsk) + IA64_TASK_SIZE))
82f1b07b TL	61	#else
82f1b07b TL	62	#define current_thread_info() ((struct thread_info *) 0)
b235beea	63	#define alloc_thread_stack_node(tsk, node) ((unsigned long *) 0)
ab03591d	64	#define task_thread_info(tsk) ((struct thread_info *) 0)
82f1b07b	65	#endif
ba14a194	66	#define free_thread_stack(tsk) /* nothing */
ab03591d AV	67	#define task_stack_page(tsk) ((void *)(tsk))
	68
	69	#define __HAVE_THREAD_FUNCTIONS
abf917cd	70	#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
b64f34cd HS	71	#define setup_thread_stack(p, org) \
	72	task_thread_info(p) = task_thread_info(org); \
	73	task_thread_info(p)->ac_stime = 0; \
	74	task_thread_info(p)->ac_utime = 0; \
	75	task_thread_info(p)->task = (p);
	76	#else
ab03591d AV	77	#define setup_thread_stack(p, org) \
	78	task_thread_info(p) = task_thread_info(org); \
	79	task_thread_info(p)->task = (p);
b64f34cd	80	#endif
ab03591d	81	#define end_of_stack(p) (unsigned long )((void )(p) + IA64_RBS_OFFSET)
1da177e4	82
504f52b5 ED	83	#define alloc_task_struct_node(node) \
	84	({ \
	85	struct page *page = alloc_pages_node(node, GFP_KERNEL \| __GFP_COMP, \
	86	KERNEL_STACK_SIZE_ORDER); \
	87	struct task_struct *ret = page ? page_address(page) : NULL; \
	88	\
f48fea03	89	ret; \
504f52b5	90	})
1da177e4 LT	91	#define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER)
	92
	93	#endif /* !__ASSEMBLY */
	94
	95	/*
	96	* thread information flags
	97	* - these are process state flags that various assembly files may need to access
	98	* - pending work-to-be-done flags are in least-significant 16 bits, other flags
	99	* in top 16 bits
	100	*/
a583f1b5 SE	101	#define TIF_SIGPENDING 0 /* signal pending */
	102	#define TIF_NEED_RESCHED 1 /* rescheduling necessary */
	103	#define TIF_SYSCALL_TRACE 2 /* syscall trace active */
	104	#define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */
	105	#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
5aa92ffd	106	#define TIF_NOTIFY_RESUME 6 /* resumption notification requested */
0ddc9324	107	#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
e619ae0b	108	#define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */
15029285	109	#define TIF_DB_DISABLED 19 /* debug trap disabled for fsyscall */
3b2ce0b1	110	#define TIF_RESTORE_RSE 21 /* user RBS is newer than kernel RBS */
04075425	111	#define TIF_POLLING_NRFLAG 22 /* idle is polling for TIF_NEED_RESCHED */
1da177e4 LT	112
	113	#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
	114	#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
90f9d70a	115	#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
90f9d70a	116	#define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE\|_TIF_SYSCALL_AUDIT\|_TIF_SINGLESTEP)
5aa92ffd	117	#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
1da177e4 LT	118	#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
1da177e4 LT	119	#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
e619ae0b	120	#define _TIF_MCA_INIT (1 << TIF_MCA_INIT)
15029285	121	#define _TIF_DB_DISABLED (1 << TIF_DB_DISABLED)
3b2ce0b1	122	#define _TIF_RESTORE_RSE (1 << TIF_RESTORE_RSE)
04075425	123	#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
1da177e4 LT	124
1da177e4 LT	125	/* "work to do on user-return" bits */
5aa92ffd	126	#define TIF_ALLWORK_MASK (_TIF_SIGPENDING\|_TIF_NOTIFY_RESUME\|_TIF_SYSCALL_AUDIT\|\
49eaeb4b	127	_TIF_NEED_RESCHED\|_TIF_SYSCALL_TRACE)
1da177e4 LT	128	/* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
	129	#define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE\|_TIF_SYSCALL_AUDIT))
	130
	131	#endif /* _ASM_IA64_THREAD_INFO_H */