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131 lines
4.7 KiB
131 lines
4.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2002-2003 Hewlett-Packard Co |
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* David Mosberger-Tang <[email protected]> |
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*/ |
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#ifndef _ASM_IA64_THREAD_INFO_H |
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#define _ASM_IA64_THREAD_INFO_H |
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#ifndef ASM_OFFSETS_C |
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#include <asm/asm-offsets.h> |
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#endif |
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#include <asm/processor.h> |
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#include <asm/ptrace.h> |
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#define THREAD_SIZE KERNEL_STACK_SIZE |
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#ifndef __ASSEMBLY__ |
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/* |
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* On IA-64, we want to keep the task structure and kernel stack together, so they can be |
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* mapped by a single TLB entry and so they can be addressed by the "current" pointer |
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* without having to do pointer masking. |
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*/ |
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struct thread_info { |
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struct task_struct *task; /* XXX not really needed, except for dup_task_struct() */ |
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__u32 flags; /* thread_info flags (see TIF_*) */ |
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__u32 cpu; /* current CPU */ |
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__u32 last_cpu; /* Last CPU thread ran on */ |
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__u32 status; /* Thread synchronous flags */ |
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int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
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__u64 utime; |
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__u64 stime; |
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__u64 gtime; |
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__u64 hardirq_time; |
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__u64 softirq_time; |
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__u64 idle_time; |
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__u64 ac_stamp; |
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__u64 ac_leave; |
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__u64 ac_stime; |
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__u64 ac_utime; |
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#endif |
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}; |
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#define INIT_THREAD_INFO(tsk) \ |
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{ \ |
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.task = &tsk, \ |
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.flags = 0, \ |
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.cpu = 0, \ |
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.preempt_count = INIT_PREEMPT_COUNT, \ |
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} |
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#ifndef ASM_OFFSETS_C |
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/* how to get the thread information struct from C */ |
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#define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE)) |
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#define arch_alloc_thread_stack_node(tsk, node) \ |
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((unsigned long *) ((char *) (tsk) + IA64_TASK_SIZE)) |
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#define task_thread_info(tsk) ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE)) |
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#else |
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#define current_thread_info() ((struct thread_info *) 0) |
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#define arch_alloc_thread_stack_node(tsk, node) ((unsigned long *) 0) |
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#define task_thread_info(tsk) ((struct thread_info *) 0) |
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#endif |
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#define arch_free_thread_stack(tsk) /* nothing */ |
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#define task_stack_page(tsk) ((void *)(tsk)) |
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#define __HAVE_THREAD_FUNCTIONS |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
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#define setup_thread_stack(p, org) \ |
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*task_thread_info(p) = *task_thread_info(org); \ |
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task_thread_info(p)->ac_stime = 0; \ |
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task_thread_info(p)->ac_utime = 0; \ |
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task_thread_info(p)->task = (p); |
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#else |
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#define setup_thread_stack(p, org) \ |
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*task_thread_info(p) = *task_thread_info(org); \ |
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task_thread_info(p)->task = (p); |
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#endif |
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#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) |
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#define alloc_task_struct_node(node) \ |
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({ \ |
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struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP, \ |
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KERNEL_STACK_SIZE_ORDER); \ |
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struct task_struct *ret = page ? page_address(page) : NULL; \ |
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\ |
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ret; \ |
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}) |
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#define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) |
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#endif /* !__ASSEMBLY */ |
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/* |
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* thread information flags |
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* - these are process state flags that various assembly files may need to access |
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* - pending work-to-be-done flags are in least-significant 16 bits, other flags |
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* in top 16 bits |
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*/ |
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#define TIF_SIGPENDING 0 /* signal pending */ |
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#define TIF_NEED_RESCHED 1 /* rescheduling necessary */ |
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#define TIF_SYSCALL_TRACE 2 /* syscall trace active */ |
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#define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */ |
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#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ |
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#define TIF_NOTIFY_SIGNAL 5 /* signal notification exist */ |
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#define TIF_NOTIFY_RESUME 6 /* resumption notification requested */ |
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#define TIF_MEMDIE 17 /* is terminating due to OOM killer */ |
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#define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */ |
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#define TIF_DB_DISABLED 19 /* debug trap disabled for fsyscall */ |
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#define TIF_RESTORE_RSE 21 /* user RBS is newer than kernel RBS */ |
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#define TIF_POLLING_NRFLAG 22 /* idle is polling for TIF_NEED_RESCHED */ |
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
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#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
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#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
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#define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP) |
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#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) |
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#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) |
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#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
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#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) |
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#define _TIF_MCA_INIT (1 << TIF_MCA_INIT) |
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#define _TIF_DB_DISABLED (1 << TIF_DB_DISABLED) |
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#define _TIF_RESTORE_RSE (1 << TIF_RESTORE_RSE) |
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#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) |
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/* "work to do on user-return" bits */ |
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#define TIF_ALLWORK_MASK (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\ |
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_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_NOTIFY_SIGNAL) |
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/* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */ |
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#define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)) |
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#endif /* _ASM_IA64_THREAD_INFO_H */
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