79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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/*
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* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#include <linux/kallsyms.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include "sysrq.h"
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/* Catch non-i386 SUBARCH's. */
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#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
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void show_trace(struct task_struct *task, unsigned long * stack)
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{
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unsigned long addr;
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if (!stack) {
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stack = (unsigned long*) &stack;
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WARN_ON(1);
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}
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printk(KERN_INFO "Call Trace: \n");
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while (((long) stack & (THREAD_SIZE-1)) != 0) {
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addr = *stack;
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if (__kernel_text_address(addr)) {
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printk(KERN_INFO "%08lx: [<%08lx>]",
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(unsigned long) stack, addr);
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print_symbol(KERN_CONT " %s", addr);
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printk(KERN_CONT "\n");
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}
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stack++;
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}
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printk(KERN_INFO "\n");
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}
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#endif
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/*
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* stack dumps generator - this is used by arch-independent code.
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* And this is identical to i386 currently.
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*/
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void dump_stack(void)
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{
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unsigned long stack;
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show_trace(current, &stack);
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}
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EXPORT_SYMBOL(dump_stack);
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/*Stolen from arch/i386/kernel/traps.c */
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static const int kstack_depth_to_print = 24;
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/* This recently started being used in arch-independent code too, as in
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* kernel/sched.c.*/
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void show_stack(struct task_struct *task, unsigned long *esp)
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{
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unsigned long *stack;
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int i;
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if (esp == NULL) {
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if (task != current && task != NULL) {
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esp = (unsigned long *) KSTK_ESP(task);
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} else {
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esp = (unsigned long *) &esp;
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}
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}
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stack = esp;
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for (i = 0; i < kstack_depth_to_print; i++) {
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if (kstack_end(stack))
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break;
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if (i && ((i % 8) == 0))
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printk(KERN_INFO " ");
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printk(KERN_CONT "%08lx ", *stack++);
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}
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show_trace(task, esp);
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}
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