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#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_free(const void *ptr) __ref;
  30extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  31extern void kmemleak_padding(const void *ptr, unsigned long offset,
  32                             size_t size) __ref;
  33extern void kmemleak_not_leak(const void *ptr) __ref;
  34extern void kmemleak_ignore(const void *ptr) __ref;
  35extern void kmemleak_scan_area(const void *ptr, unsigned long offset,
  36                               size_t length, gfp_t gfp) __ref;
  37extern void kmemleak_no_scan(const void *ptr) __ref;
  38
  39static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  40                                            int min_count, unsigned long flags,
  41                                            gfp_t gfp)
  42{
  43        if (!(flags & SLAB_NOLEAKTRACE))
  44                kmemleak_alloc(ptr, size, min_count, gfp);
  45}
  46
  47static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  48{
  49        if (!(flags & SLAB_NOLEAKTRACE))
  50                kmemleak_free(ptr);
  51}
  52
  53static inline void kmemleak_erase(void **ptr)
  54{
  55        *ptr = NULL;
  56}
  57
  58#else
  59
  60static inline void kmemleak_init(void)
  61{
  62}
  63static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  64                                  gfp_t gfp)
  65{
  66}
  67static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  68                                            int min_count, unsigned long flags,
  69                                            gfp_t gfp)
  70{
  71}
  72static inline void kmemleak_free(const void *ptr)
  73{
  74}
  75static inline void kmemleak_free_part(const void *ptr, size_t size)
  76{
  77}
  78static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  79{
  80}
  81static inline void kmemleak_not_leak(const void *ptr)
  82{
  83}
  84static inline void kmemleak_ignore(const void *ptr)
  85{
  86}
  87static inline void kmemleak_scan_area(const void *ptr, unsigned long offset,
  88                                      size_t length, gfp_t gfp)
  89{
  90}
  91static inline void kmemleak_erase(void **ptr)
  92{
  93}
  94static inline void kmemleak_no_scan(const void *ptr)
  95{
  96}
  97
  98#endif  /* CONFIG_DEBUG_KMEMLEAK */
  99
 100#endif  /* __KMEMLEAK_H */
 101