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