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 #include <linux/vmalloc.h>
  26
  27 #ifdef CONFIG_DEBUG_KMEMLEAK
  28
  29 extern void kmemleak_init(void) __init;
  30 extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  31                            gfp_t gfp) __ref;
  32 extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  33                                   gfp_t gfp) __ref;
  34 extern void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
  35                              gfp_t gfp) __ref;
  36 extern void kmemleak_free(const void *ptr) __ref;
  37 extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  38 extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
  39 extern void kmemleak_update_trace(const void *ptr) __ref;
  40 extern void kmemleak_not_leak(const void *ptr) __ref;
  41 extern void kmemleak_ignore(const void *ptr) __ref;
  42 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  43 extern void kmemleak_no_scan(const void *ptr) __ref;
  44 extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
  45                                 gfp_t gfp) __ref;
  46 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
  47 extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref;
  48 extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
  49
  50 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  51                                             int min_count, slab_flags_t flags,
  52                                             gfp_t gfp)
  53 {
  54         if (!(flags & SLAB_NOLEAKTRACE))
  55                 kmemleak_alloc(ptr, size, min_count, gfp);
  56 }
  57
  58 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
  59 {
  60         if (!(flags & SLAB_NOLEAKTRACE))
  61                 kmemleak_free(ptr);
  62 }
  63
  64 static inline void kmemleak_erase(void **ptr)
  65 {
  66         *ptr = NULL;
  67 }
  68
  69 #else
  70
  71 static inline void kmemleak_init(void)
  72 {
  73 }
  74 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  75                                   gfp_t gfp)
  76 {
  77 }
  78 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  79                                             int min_count, slab_flags_t flags,
  80                                             gfp_t gfp)
  81 {
  82 }
  83 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  84                                          gfp_t gfp)
  85 {
  86 }
  87 static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
  88                                     gfp_t gfp)
  89 {
  90 }
  91 static inline void kmemleak_free(const void *ptr)
  92 {
  93 }
  94 static inline void kmemleak_free_part(const void *ptr, size_t size)
  95 {
  96 }
  97 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
  98 {
  99 }
 100 static inline void kmemleak_free_percpu(const void __percpu *ptr)
 101 {
 102 }
 103 static inline void kmemleak_update_trace(const void *ptr)
 104 {
 105 }
 106 static inline void kmemleak_not_leak(const void *ptr)
 107 {
 108 }
 109 static inline void kmemleak_ignore(const void *ptr)
 110 {
 111 }
 112 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 113 {
 114 }
 115 static inline void kmemleak_erase(void **ptr)
 116 {
 117 }
 118 static inline void kmemleak_no_scan(const void *ptr)
 119 {
 120 }
 121 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
 122                                        int min_count, gfp_t gfp)
 123 {
 124 }
 125 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
 126 {
 127 }
 128 static inline void kmemleak_not_leak_phys(phys_addr_t phys)
 129 {
 130 }
 131 static inline void kmemleak_ignore_phys(phys_addr_t phys)
 132 {
 133 }
 134
 135 #endif  /* CONFIG_DEBUG_KMEMLEAK */
 136
 137 #endif  /* __KMEMLEAK_H */