Release 4.11 arch/avr32/kernel/stacktrace.c

/*
 * Stack trace management functions
 *
 * Copyright (C) 2007 Atmel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <linux/stacktrace.h>
#include <linux/thread_info.h>
#include <linux/module.h>

register unsigned long current_frame_pointer asm("r7");


struct stackframe {
	
unsigned long lr;
	
unsigned long fp;
};

/*
 * Save stack-backtrace addresses into a stack_trace buffer.
 */


void save_stack_trace(struct stack_trace *trace)
{
	unsigned long low, high;
	unsigned long fp;
	struct stackframe *frame;
	int skip = trace->skip;

	low = (unsigned long)task_stack_page(current);
	high = low + THREAD_SIZE;
	fp = current_frame_pointer;

	while (fp >= low && fp <= (high - 8)) {
		frame = (struct stackframe *)fp;

		if (skip) {
			skip--;
		} else {
			trace->entries[trace->nr_entries++] = frame->lr;
			if (trace->nr_entries >= trace->max_entries)
				break;
		}

		/*
                 * The next frame must be at a higher address than the
                 * current frame.
                 */
		low = fp + 8;
		fp = frame->fp;
	}
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Håvard Skinnemoen
128
100.00%
1
100.00%
Total
128
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(save_stack_trace);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Håvard Skinnemoen
161
93.60%
1
25.00%
Ingo Molnar
8
4.65%
2
50.00%
Heiko Carstens
3
1.74%
1
25.00%
Total
172
100.00%
4
100.00%
Directory: arch/avr32/kernel

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.