mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 04:06:22 +00:00
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
|
|
* arch/sh/kernel/stacktrace.c
|
|
*
|
|
* Stack trace management functions
|
|
*
|
|
* Copyright (C) 2006 - 2008 Paul Mundt
|
|
*
|
|
* 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/sched.h>
|
|
#include <linux/stacktrace.h>
|
|
#include <linux/thread_info.h>
|
|
#include <linux/module.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
/*
|
|
* Save stack-backtrace addresses into a stack_trace buffer.
|
|
*/
|
|
void save_stack_trace(struct stack_trace *trace)
|
|
{
|
|
unsigned long *sp = (unsigned long *)current_stack_pointer;
|
|
|
|
while (!kstack_end(sp)) {
|
|
unsigned long addr = *sp++;
|
|
|
|
if (__kernel_text_address(addr)) {
|
|
if (trace->skip > 0)
|
|
trace->skip--;
|
|
else
|
|
trace->entries[trace->nr_entries++] = addr;
|
|
if (trace->nr_entries >= trace->max_entries)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(save_stack_trace);
|
|
|
|
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
|
|
{
|
|
unsigned long *sp = (unsigned long *)tsk->thread.sp;
|
|
|
|
while (!kstack_end(sp)) {
|
|
unsigned long addr = *sp++;
|
|
|
|
if (__kernel_text_address(addr)) {
|
|
if (in_sched_functions(addr))
|
|
break;
|
|
if (trace->skip > 0)
|
|
trace->skip--;
|
|
else
|
|
trace->entries[trace->nr_entries++] = addr;
|
|
if (trace->nr_entries >= trace->max_entries)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
|