summaryrefslogtreecommitdiff
path: root/include/linux/stackdepot.h
blob: 6bb4bc1a5f5459fc06b90548558a4745d0973b05 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * A generic stack depot implementation
 *
 * Author: Alexander Potapenko <glider@google.com>
 * Copyright (C) 2016 Google, Inc.
 *
 * Based on code by Dmitry Chernenkov.
 */

#ifndef _LINUX_STACKDEPOT_H
#define _LINUX_STACKDEPOT_H

typedef u32 depot_stack_handle_t;

depot_stack_handle_t stack_depot_save(unsigned long *entries,
				      unsigned int nr_entries, gfp_t gfp_flags);

unsigned int stack_depot_fetch(depot_stack_handle_t handle,
			       unsigned long **entries);

unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);

#ifdef CONFIG_STACKDEPOT
int stack_depot_init(void);
#else
static inline int stack_depot_init(void)
{
	return 0;
}
#endif	/* CONFIG_STACKDEPOT */

#endif