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
kmemleak_alloc_recursive(const void * ptr,size_t size,int min_count,slab_flags_t flags,gfp_t gfp)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
kmemleak_free_recursive(const void * ptr,slab_flags_t flags)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
kmemleak_erase(void ** ptr)64 static inline void kmemleak_erase(void **ptr)
65 {
66 *ptr = NULL;
67 }
68
69 #else
70
kmemleak_init(void)71 static inline void kmemleak_init(void)
72 {
73 }
kmemleak_alloc(const void * ptr,size_t size,int min_count,gfp_t gfp)74 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
75 gfp_t gfp)
76 {
77 }
kmemleak_alloc_recursive(const void * ptr,size_t size,int min_count,slab_flags_t flags,gfp_t gfp)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 }
kmemleak_alloc_percpu(const void __percpu * ptr,size_t size,gfp_t gfp)83 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
84 gfp_t gfp)
85 {
86 }
kmemleak_vmalloc(const struct vm_struct * area,size_t size,gfp_t gfp)87 static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
88 gfp_t gfp)
89 {
90 }
kmemleak_free(const void * ptr)91 static inline void kmemleak_free(const void *ptr)
92 {
93 }
kmemleak_free_part(const void * ptr,size_t size)94 static inline void kmemleak_free_part(const void *ptr, size_t size)
95 {
96 }
kmemleak_free_recursive(const void * ptr,slab_flags_t flags)97 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
98 {
99 }
kmemleak_free_percpu(const void __percpu * ptr)100 static inline void kmemleak_free_percpu(const void __percpu *ptr)
101 {
102 }
kmemleak_update_trace(const void * ptr)103 static inline void kmemleak_update_trace(const void *ptr)
104 {
105 }
kmemleak_not_leak(const void * ptr)106 static inline void kmemleak_not_leak(const void *ptr)
107 {
108 }
kmemleak_ignore(const void * ptr)109 static inline void kmemleak_ignore(const void *ptr)
110 {
111 }
kmemleak_scan_area(const void * ptr,size_t size,gfp_t gfp)112 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
113 {
114 }
kmemleak_erase(void ** ptr)115 static inline void kmemleak_erase(void **ptr)
116 {
117 }
kmemleak_no_scan(const void * ptr)118 static inline void kmemleak_no_scan(const void *ptr)
119 {
120 }
kmemleak_alloc_phys(phys_addr_t phys,size_t size,int min_count,gfp_t gfp)121 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
122 int min_count, gfp_t gfp)
123 {
124 }
kmemleak_free_part_phys(phys_addr_t phys,size_t size)125 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
126 {
127 }
kmemleak_not_leak_phys(phys_addr_t phys)128 static inline void kmemleak_not_leak_phys(phys_addr_t phys)
129 {
130 }
kmemleak_ignore_phys(phys_addr_t phys)131 static inline void kmemleak_ignore_phys(phys_addr_t phys)
132 {
133 }
134
135 #endif /* CONFIG_DEBUG_KMEMLEAK */
136
137 #endif /* __KMEMLEAK_H */
138