LXR linux/include/linux/kmemleak.h

   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#include <linux/slab.h>
  25
  26#ifdef CONFIG_DEBUG_KMEMLEAK
  27
  28extern void kmemleak_init(void) __init;
  29extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  30                           gfp_t gfp) __ref;
  31extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  32                                  gfp_t gfp) __ref;
  33extern void kmemleak_free(const void *ptr) __ref;
  34extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  35extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
  36extern void kmemleak_update_trace(const void *ptr) __ref;
  37extern void kmemleak_not_leak(const void *ptr) __ref;
  38extern void kmemleak_ignore(const void *ptr) __ref;
  39extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  40extern void kmemleak_no_scan(const void *ptr) __ref;
  41
  42static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  43                                            int min_count, unsigned long flags,
  44                                            gfp_t gfp)
  45{
  46        if (!(flags & SLAB_NOLEAKTRACE))
  47                kmemleak_alloc(ptr, size, min_count, gfp);
  48}
  49
  50static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  51{
  52        if (!(flags & SLAB_NOLEAKTRACE))
  53                kmemleak_free(ptr);
  54}
  55
  56static inline void kmemleak_erase(void **ptr)
  57{
  58        *ptr = NULL;
  59}
  60
  61#else
  62
  63static inline void kmemleak_init(void)
  64{
  65}
  66static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  67                                  gfp_t gfp)
  68{
  69}
  70static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  71                                            int min_count, unsigned long flags,
  72                                            gfp_t gfp)
  73{
  74}
  75static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  76                                         gfp_t gfp)
  77{
  78}
  79static inline void kmemleak_free(const void *ptr)
  80{
  81}
  82static inline void kmemleak_free_part(const void *ptr, size_t size)
  83{
  84}
  85static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  86{
  87}
  88static inline void kmemleak_free_percpu(const void __percpu *ptr)
  89{
  90}
  91static inline void kmemleak_update_trace(const void *ptr)
  92{
  93}
  94static inline void kmemleak_not_leak(const void *ptr)
  95{
  96}
  97static inline void kmemleak_ignore(const void *ptr)
  98{
  99}
 100static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 101{
 102}
 103static inline void kmemleak_erase(void **ptr)
 104{
 105}
 106static inline void kmemleak_no_scan(const void *ptr)
 107{
 108}
 109
 110#endif  /* CONFIG_DEBUG_KMEMLEAK */
 111
 112#endif  /* __KMEMLEAK_H */
 113