linux/include/linux/kmemleak.h
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   1/*
   2 * include/linux/kmemleak.h
   3 *
   4 * Copyright (C) 2008 ARM Limited
   5 * Written by Catalin Marinas <catalin.marinas@arm.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 */
  20
  21#ifndef __KMEMLEAK_H
  22#define __KMEMLEAK_H
  23
  24#ifdef CONFIG_DEBUG_KMEMLEAK
  25
  26extern void kmemleak_init(void) __ref;
  27extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  28                           gfp_t gfp) __ref;
  29extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size) __ref;
  30extern void kmemleak_free(const void *ptr) __ref;
  31extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  32extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
  33extern void kmemleak_padding(const void *ptr, unsigned long offset,
  34                             size_t size) __ref;
  35extern void kmemleak_not_leak(const void *ptr) __ref;
  36extern void kmemleak_ignore(const void *ptr) __ref;
  37extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  38extern void kmemleak_no_scan(const void *ptr) __ref;
  39
  40static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  41                                            int min_count, unsigned long flags,
  42                                            gfp_t gfp)
  43{
  44        if (!(flags & SLAB_NOLEAKTRACE))
  45                kmemleak_alloc(ptr, size, min_count, gfp);
  46}
  47
  48static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  49{
  50        if (!(flags & SLAB_NOLEAKTRACE))
  51                kmemleak_free(ptr);
  52}
  53
  54static inline void kmemleak_erase(void **ptr)
  55{
  56        *ptr = NULL;
  57}
  58
  59#else
  60
  61static inline void kmemleak_init(void)
  62{
  63}
  64static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  65                                  gfp_t gfp)
  66{
  67}
  68static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  69                                            int min_count, unsigned long flags,
  70                                            gfp_t gfp)
  71{
  72}
  73static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
  74{
  75}
  76static inline void kmemleak_free(const void *ptr)
  77{
  78}
  79static inline void kmemleak_free_part(const void *ptr, size_t size)
  80{
  81}
  82static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  83{
  84}
  85static inline void kmemleak_free_percpu(const void __percpu *ptr)
  86{
  87}
  88static inline void kmemleak_not_leak(const void *ptr)
  89{
  90}
  91static inline void kmemleak_ignore(const void *ptr)
  92{
  93}
  94static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
  95{
  96}
  97static inline void kmemleak_erase(void **ptr)
  98{
  99}
 100static inline void kmemleak_no_scan(const void *ptr)
 101{
 102}
 103
 104#endif  /* CONFIG_DEBUG_KMEMLEAK */
 105
 106#endif  /* __KMEMLEAK_H */
 107
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