arch/um/kernel/sysrq.c

   1 /*
   2  * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "linux/sched.h"
   7 #include "linux/kernel.h"
   8 #include "linux/module.h"
   9 #include "linux/kallsyms.h"
  10 #include "asm/page.h"
  11 #include "asm/processor.h"
  12 #include "sysrq.h"
  13 #include "user_util.h"
  14
  15 void show_trace(unsigned long * stack)
  16 {
  17         /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from
  18          * arch/i386/kernel/traps.c. */
  19         unsigned long addr;
  20
  21         if (!stack)
  22                 stack = (unsigned long*) &stack;
  23
  24         printk("Call Trace: \n");
  25         while (((long) stack & (THREAD_SIZE-1)) != 0) {
  26                 addr = *stack++;
  27                 if (__kernel_text_address(addr)) {
  28                         printk(" [<%08lx>]", addr);
  29                         print_symbol(" %s", addr);
  30                         printk("\n");
  31                 }
  32         }
  33         printk("\n");
  34 }
  35
  36 /*
  37  * The architecture-independent dump_stack generator
  38  */
  39 void dump_stack(void)
  40 {
  41         unsigned long stack;
  42
  43         show_trace(&stack);
  44 }
  45 EXPORT_SYMBOL(dump_stack);
  46
  47 void show_stack(struct task_struct *task, unsigned long *sp)
  48 {
  49         show_trace(sp);
  50 }