/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */ #ifndef __UM_THREAD_INFO_H #define __UM_THREAD_INFO_H #define THREAD_SIZE_ORDER [31mCONFIG_KERNEL_STACK_ORDER[0m #define THREAD_SIZE ((1 << [31mCONFIG_KERNEL_STACK_ORDER[0m) * PAGE_SIZE) #ifndef __ASSEMBLY__ #include <asm/types.h> #include <asm/page.h> #include <asm/segment.h> #include <sysdep/ptrace_user.h> struct thread_info { struct task_struct *task; /* main task structure */ unsigned long flags; /* low level flags */ __u32 cpu; /* current CPU */ int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user 0-0xFFFFFFFF for kernel */ struct thread_info *real_thread; /* Points to non-IRQ stack */ unsigned long aux_fp_regs[FP_SIZE]; /* auxiliary fp_regs to save/restore them out-of-band */ }; #define INIT_THREAD_INFO(tsk) \ { \ .task = &tsk, \ .flags = 0, \ .cpu = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ .addr_limit = KERNEL_DS, \ .real_thread = NULL, \ } /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { struct thread_info *ti; unsigned long mask = THREAD_SIZE - 1; void *p; asm volatile ("" : "=r" (p) : "0" (&ti)); ti = (struct thread_info *) (((unsigned long)p) & ~mask); return ti; } #endif #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ #define TIF_SIGPENDING 1 /* signal pending */ #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ #define TIF_RESTART_BLOCK 4 #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_SYSCALL_AUDIT 6 #define TIF_RESTORE_SIGMASK 7 #define TIF_NOTIFY_RESUME 8 #define TIF_SECCOMP 9 /* secure computing */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_MEMDIE (1 << TIF_MEMDIE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_SECCOMP (1 << TIF_SECCOMP) #endif |