mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-28 13:34:38 +08:00
e768223109
I found several function which we don't use that's why I am removing them. Signed-off-by: Michal Simek <monstr@monstr.eu>
98 lines
2.0 KiB
C
98 lines
2.0 KiB
C
/*
|
|
* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
|
|
* Copyright (C) 2007-2009 PetaLogix
|
|
* Copyright (C) 2006 Atmark Techno, Inc.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/kallsyms.h>
|
|
#include <linux/module.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/debug_locks.h>
|
|
|
|
#include <asm/exceptions.h>
|
|
#include <asm/system.h>
|
|
|
|
void trap_init(void)
|
|
{
|
|
__enable_hw_exceptions();
|
|
}
|
|
|
|
static unsigned long kstack_depth_to_print = 24;
|
|
|
|
static int __init kstack_setup(char *s)
|
|
{
|
|
return !strict_strtoul(s, 0, &kstack_depth_to_print);
|
|
}
|
|
__setup("kstack=", kstack_setup);
|
|
|
|
void show_trace(struct task_struct *task, unsigned long *stack)
|
|
{
|
|
unsigned long addr;
|
|
|
|
if (!stack)
|
|
stack = (unsigned long *)&stack;
|
|
|
|
printk(KERN_NOTICE "Call Trace: ");
|
|
#ifdef CONFIG_KALLSYMS
|
|
printk(KERN_NOTICE "\n");
|
|
#endif
|
|
while (!kstack_end(stack)) {
|
|
addr = *stack++;
|
|
/*
|
|
* If the address is either in the text segment of the
|
|
* kernel, or in the region which contains vmalloc'ed
|
|
* memory, it *may* be the address of a calling
|
|
* routine; if so, print it so that someone tracing
|
|
* down the cause of the crash will be able to figure
|
|
* out the call path that was taken.
|
|
*/
|
|
if (kernel_text_address(addr))
|
|
print_ip_sym(addr);
|
|
}
|
|
printk(KERN_NOTICE "\n");
|
|
|
|
if (!task)
|
|
task = current;
|
|
|
|
debug_show_held_locks(task);
|
|
}
|
|
|
|
void show_stack(struct task_struct *task, unsigned long *sp)
|
|
{
|
|
unsigned long *stack;
|
|
int i;
|
|
|
|
if (sp == NULL) {
|
|
if (task)
|
|
sp = (unsigned long *) ((struct thread_info *)
|
|
(task->stack))->cpu_context.r1;
|
|
else
|
|
sp = (unsigned long *)&sp;
|
|
}
|
|
|
|
stack = sp;
|
|
|
|
printk(KERN_INFO "\nStack:\n ");
|
|
|
|
for (i = 0; i < kstack_depth_to_print; i++) {
|
|
if (kstack_end(sp))
|
|
break;
|
|
if (i && ((i % 8) == 0))
|
|
printk("\n ");
|
|
printk("%08lx ", *sp++);
|
|
}
|
|
printk("\n");
|
|
show_trace(task, stack);
|
|
}
|
|
|
|
void dump_stack(void)
|
|
{
|
|
show_stack(NULL, NULL);
|
|
}
|
|
EXPORT_SYMBOL(dump_stack);
|