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