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