name : processor-generic.h /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */ #ifndef __UM_PROCESSOR_GENERIC_H #define __UM_PROCESSOR_GENERIC_H struct pt_regs; struct task_struct; #include <asm/ptrace.h> #include <sysdep/archsetjmp.h> #include <linux/prefetch.h> #include <asm/cpufeatures.h> struct mm_struct; struct thread_struct { struct pt_regs regs; struct pt_regs *segv_regs; void *fault_addr; jmp_buf *fault_catcher; struct task_struct *prev_sched; struct arch_thread arch; jmp_buf switch_buf; struct { int op; union { struct { int pid; } fork, exec; struct { int (*proc)(void *); void *arg; } thread; struct { void (*proc)(void *); void *arg; } cb; } u; } request; }; #define INIT_THREAD \ { \ .regs = EMPTY_REGS, \ .fault_addr = NULL, \ .prev_sched = NULL, \ .arch = INIT_ARCH_THREAD, \ .request = { 0 } \ } /* * User space process size: 3GB (default). */ extern unsigned long task_size; #define TASK_SIZE (task_size) #undef STACK_TOP #undef STACK_TOP_MAX extern unsigned long stacksizelim; #define STACK_ROOM (stacksizelim) #define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE) #define STACK_TOP_MAX STACK_TOP /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */ #define TASK_UNMAPPED_BASE (0x40000000) extern void start_thread(struct pt_regs *regs, unsigned long entry, unsigned long stack); struct cpuinfo_um { unsigned long loops_per_jiffy; int ipi_pipe[2]; int cache_alignment; union { __u32 x86_capability[NCAPINTS + NBUGINTS]; unsigned long x86_capability_alignment; }; }; extern struct cpuinfo_um boot_cpu_data; #define cpu_data(cpu) boot_cpu_data #define current_cpu_data boot_cpu_data #define cache_line_size() (boot_cpu_data.cache_alignment) #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) extern unsigned long __get_wchan(struct task_struct *p); #endif