132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
|
/* 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>
|
||
|
|
|
||
|
|
#define THREAD_SIZE KERNEL_STACK_SIZE
|
||
|
|
|
||
|
|
#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 */
|
||
|
|
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 INIT_THREAD_INFO(tsk) \
|
||
|
|
{ \
|
||
|
|
.task = &tsk, \
|
||
|
|
.flags = 0, \
|
||
|
|
.cpu = 0, \
|
||
|
|
.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 arch_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 arch_alloc_thread_stack_node(tsk, node) ((unsigned long *) 0)
|
||
|
|
#define task_thread_info(tsk) ((struct thread_info *) 0)
|
||
|
|
#endif
|
||
|
|
#define arch_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_SIGNAL 5 /* signal notification exist */
|
||
|
|
#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_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
|
||
|
|
#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|_TIF_NOTIFY_SIGNAL)
|
||
|
|
/* 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 */
|