[deliverable/linux.git] / arch / um / kernel / sysrq.c

/*
 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#include <linux/kallsyms.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <asm/sysrq.h>

/* Catch non-i386 SUBARCH's. */
#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
void show_trace(struct task_struct *task, unsigned long * stack)
{
	unsigned long addr;

	if (!stack) {
		stack = (unsigned long*) &stack;
		WARN_ON(1);
	}

	printk(KERN_INFO "Call Trace: \n");
	while (((long) stack & (THREAD_SIZE-1)) != 0) {
		addr = *stack;
		if (__kernel_text_address(addr)) {
			printk(KERN_INFO "%08lx:  [<%08lx>]",
			       (unsigned long) stack, addr);
			print_symbol(KERN_CONT " %s", addr);
			printk(KERN_CONT "\n");
		}
		stack++;
	}
	printk(KERN_INFO "\n");
}
#endif

/*
 * stack dumps generator - this is used by arch-independent code.
 * And this is identical to i386 currently.
 */
void dump_stack(void)
{
	unsigned long stack;

	show_trace(current, &stack);
}
EXPORT_SYMBOL(dump_stack);

/*Stolen from arch/i386/kernel/traps.c */
static const int kstack_depth_to_print = 24;

/* This recently started being used in arch-independent code too, as in
 * kernel/sched.c.*/
void show_stack(struct task_struct *task, unsigned long *esp)
{
	unsigned long *stack;
	int i;

	if (esp == NULL) {
		if (task != current && task != NULL) {
			esp = (unsigned long *) KSTK_ESP(task);
		} else {
			esp = (unsigned long *) &esp;
		}
	}

	stack = esp;
	for (i = 0; i < kstack_depth_to_print; i++) {
		if (kstack_end(stack))
			break;
		if (i && ((i % 8) == 0))
			printk(KERN_INFO "       ");
		printk(KERN_CONT "%08lx ", *stack++);
	}

	show_trace(task, esp);
}
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
	3	* Licensed under the GPL
	4	*/
	5
	6	#include <linux/kallsyms.h>
	7	#include <linux/kernel.h>
	8	#include <linux/module.h>
	9	#include <linux/sched.h>
	10	#include <asm/sysrq.h>
	11
	12	/* Catch non-i386 SUBARCH's. */
	13	#if !defined(CONFIG_UML_X86) \|\| defined(CONFIG_64BIT)
	14	void show_trace(struct task_struct task, unsigned long stack)
	15	{
	16	unsigned long addr;
	17
	18	if (!stack) {
	19	stack = (unsigned long*) &stack;
	20	WARN_ON(1);
	21	}
	22
	23	printk(KERN_INFO "Call Trace: \n");
	24	while (((long) stack & (THREAD_SIZE-1)) != 0) {
	25	addr = *stack;
	26	if (__kernel_text_address(addr)) {
	27	printk(KERN_INFO "%08lx: [<%08lx>]",
	28	(unsigned long) stack, addr);
	29	print_symbol(KERN_CONT " %s", addr);
	30	printk(KERN_CONT "\n");
	31	}
	32	stack++;
	33	}
	34	printk(KERN_INFO "\n");
	35	}
	36	#endif
	37
	38	/*
	39	* stack dumps generator - this is used by arch-independent code.
	40	* And this is identical to i386 currently.
	41	*/
	42	void dump_stack(void)
	43	{
	44	unsigned long stack;
	45
	46	show_trace(current, &stack);
	47	}
	48	EXPORT_SYMBOL(dump_stack);
	49
	50	/Stolen from arch/i386/kernel/traps.c /
	51	static const int kstack_depth_to_print = 24;
	52
	53	/* This recently started being used in arch-independent code too, as in
	54	* kernel/sched.c.*/
	55	void show_stack(struct task_struct task, unsigned long esp)
	56	{
	57	unsigned long *stack;
	58	int i;
	59
	60	if (esp == NULL) {
	61	if (task != current && task != NULL) {
	62	esp = (unsigned long *) KSTK_ESP(task);
	63	} else {
	64	esp = (unsigned long *) &esp;
	65	}
	66	}
	67
	68	stack = esp;
	69	for (i = 0; i < kstack_depth_to_print; i++) {
	70	if (kstack_end(stack))
	71	break;
	72	if (i && ((i % 8) == 0))
	73	printk(KERN_INFO " ");
	74	printk(KERN_CONT "%08lx ", *stack++);
	75	}
	76
	77	show_trace(task, esp);
	78	}