xref: /openbmc/linux/include/linux/kmemleak.h (revision 1c82407a)
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 */
138