include/linux/stackdepot.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * A generic stack depot implementation
   4  *
   5  * Author: Alexander Potapenko <glider@google.com>
   6  * Copyright (C) 2016 Google, Inc.
   7  *
   8  * Based on code by Dmitry Chernenkov.
   9  */
  10
  11 #ifndef _LINUX_STACKDEPOT_H
  12 #define _LINUX_STACKDEPOT_H
  13
  14 typedef u32 depot_stack_handle_t;
  15
  16 depot_stack_handle_t stack_depot_save(unsigned long *entries,
  17                                       unsigned int nr_entries, gfp_t gfp_flags);
  18
  19 unsigned int stack_depot_fetch(depot_stack_handle_t handle,
  20                                unsigned long **entries);
  21
  22 unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
  23
  24 #ifdef CONFIG_STACKDEPOT
  25 int stack_depot_init(void);
  26 #else
  27 static inline int stack_depot_init(void)
  28 {
  29         return 0;
  30 }
  31 #endif  /* CONFIG_STACKDEPOT */
  32
  33 #endif