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