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) __init;
  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,
  32                                   gfp_t gfp) __ref;
  33 extern void kmemleak_free(const void *ptr) __ref;
  34 extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  35 extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
  36 extern void kmemleak_update_trace(const void *ptr) __ref;
  37 extern void kmemleak_not_leak(const void *ptr) __ref;
  38 extern void kmemleak_ignore(const void *ptr) __ref;
  39 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  40 extern void kmemleak_no_scan(const void *ptr) __ref;
  41
  42 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  43                                             int min_count, unsigned long flags,
  44                                             gfp_t gfp)
  45 {
  46         if (!(flags & SLAB_NOLEAKTRACE))
  47                 kmemleak_alloc(ptr, size, min_count, gfp);
  48 }
  49
  50 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  51 {
  52         if (!(flags & SLAB_NOLEAKTRACE))
  53                 kmemleak_free(ptr);
  54 }
  55
  56 static inline void kmemleak_erase(void **ptr)
  57 {
  58         *ptr = NULL;
  59 }
  60
  61 #else
  62
  63 static inline void kmemleak_init(void)
  64 {
  65 }
  66 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  67                                   gfp_t gfp)
  68 {
  69 }
  70 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  71                                             int min_count, unsigned long flags,
  72                                             gfp_t gfp)
  73 {
  74 }
  75 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  76                                          gfp_t gfp)
  77 {
  78 }
  79 static inline void kmemleak_free(const void *ptr)
  80 {
  81 }
  82 static inline void kmemleak_free_part(const void *ptr, size_t size)
  83 {
  84 }
  85 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  86 {
  87 }
  88 static inline void kmemleak_free_percpu(const void __percpu *ptr)
  89 {
  90 }
  91 static inline void kmemleak_update_trace(const void *ptr)
  92 {
  93 }
  94 static inline void kmemleak_not_leak(const void *ptr)
  95 {
  96 }
  97 static inline void kmemleak_ignore(const void *ptr)
  98 {
  99 }
 100 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 101 {
 102 }
 103 static inline void kmemleak_erase(void **ptr)
 104 {
 105 }
 106 static inline void kmemleak_no_scan(const void *ptr)
 107 {
 108 }
 109
 110 #endif  /* CONFIG_DEBUG_KMEMLEAK */
 111
 112 #endif  /* __KMEMLEAK_H */