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76 lines
2.2 KiB
76 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
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*/ |
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#ifndef __UM_THREAD_INFO_H |
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#define __UM_THREAD_INFO_H |
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#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER |
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#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) |
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#ifndef __ASSEMBLY__ |
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#include <asm/types.h> |
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#include <asm/page.h> |
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#include <asm/segment.h> |
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#include <sysdep/ptrace_user.h> |
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struct thread_info { |
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struct task_struct *task; /* main task structure */ |
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unsigned long flags; /* low level flags */ |
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__u32 cpu; /* current CPU */ |
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int preempt_count; /* 0 => preemptable, |
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<0 => BUG */ |
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mm_segment_t addr_limit; /* thread address space: |
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0-0xBFFFFFFF for user |
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0-0xFFFFFFFF for kernel */ |
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struct thread_info *real_thread; /* Points to non-IRQ stack */ |
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unsigned long aux_fp_regs[FP_SIZE]; /* auxiliary fp_regs to save/restore |
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them out-of-band */ |
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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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.addr_limit = KERNEL_DS, \ |
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.real_thread = NULL, \ |
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} |
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/* how to get the thread information struct from C */ |
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static inline struct thread_info *current_thread_info(void) |
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{ |
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struct thread_info *ti; |
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unsigned long mask = THREAD_SIZE - 1; |
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void *p; |
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asm volatile ("" : "=r" (p) : "0" (&ti)); |
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ti = (struct thread_info *) (((unsigned long)p) & ~mask); |
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return ti; |
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} |
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#endif |
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#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ |
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#define TIF_SIGPENDING 1 /* signal pending */ |
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#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ |
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#define TIF_NOTIFY_SIGNAL 3 /* signal notifications exist */ |
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#define TIF_RESTART_BLOCK 4 |
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#define TIF_MEMDIE 5 /* is terminating due to OOM killer */ |
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#define TIF_SYSCALL_AUDIT 6 |
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#define TIF_RESTORE_SIGMASK 7 |
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#define TIF_NOTIFY_RESUME 8 |
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#define TIF_SECCOMP 9 /* secure computing */ |
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
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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_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) |
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#define _TIF_MEMDIE (1 << TIF_MEMDIE) |
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#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
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#define _TIF_SECCOMP (1 << TIF_SECCOMP) |
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#endif
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