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 extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
  42                                 gfp_t gfp) __ref;
  43 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
  44 extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref;
  45 extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
  46
  47 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  48                                             int min_count, unsigned long flags,
  49                                             gfp_t gfp)
  50 {
  51         if (!(flags & SLAB_NOLEAKTRACE))
  52                 kmemleak_alloc(ptr, size, min_count, gfp);
  53 }
  54
  55 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  56 {
  57         if (!(flags & SLAB_NOLEAKTRACE))
  58                 kmemleak_free(ptr);
  59 }
  60
  61 static inline void kmemleak_erase(void **ptr)
  62 {
  63         *ptr = NULL;
  64 }
  65
  66 #else
  67
  68 static inline void kmemleak_init(void)
  69 {
  70 }
  71 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  72                                   gfp_t gfp)
  73 {
  74 }
  75 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  76                                             int min_count, unsigned long flags,
  77                                             gfp_t gfp)
  78 {
  79 }
  80 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  81                                          gfp_t gfp)
  82 {
  83 }
  84 static inline void kmemleak_free(const void *ptr)
  85 {
  86 }
  87 static inline void kmemleak_free_part(const void *ptr, size_t size)
  88 {
  89 }
  90 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  91 {
  92 }
  93 static inline void kmemleak_free_percpu(const void __percpu *ptr)
  94 {
  95 }
  96 static inline void kmemleak_update_trace(const void *ptr)
  97 {
  98 }
  99 static inline void kmemleak_not_leak(const void *ptr)
 100 {
 101 }
 102 static inline void kmemleak_ignore(const void *ptr)
 103 {
 104 }
 105 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 106 {
 107 }
 108 static inline void kmemleak_erase(void **ptr)
 109 {
 110 }
 111 static inline void kmemleak_no_scan(const void *ptr)
 112 {
 113 }
 114 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
 115                                        int min_count, gfp_t gfp)
 116 {
 117 }
 118 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
 119 {
 120 }
 121 static inline void kmemleak_not_leak_phys(phys_addr_t phys)
 122 {
 123 }
 124 static inline void kmemleak_ignore_phys(phys_addr_t phys)
 125 {
 126 }
 127
 128 #endif  /* CONFIG_DEBUG_KMEMLEAK */
 129
 130 #endif  /* __KMEMLEAK_H */