xref: /openbmc/linux/include/linux/kmemleak.h (revision b34e08d5)
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 #ifdef CONFIG_DEBUG_KMEMLEAK
25 
26 extern void kmemleak_init(void) __ref;
27 extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
28 			   gfp_t gfp) __ref;
29 extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size) __ref;
30 extern void kmemleak_free(const void *ptr) __ref;
31 extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
32 extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
33 extern void kmemleak_not_leak(const void *ptr) __ref;
34 extern void kmemleak_ignore(const void *ptr) __ref;
35 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
36 extern void kmemleak_no_scan(const void *ptr) __ref;
37 
38 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
39 					    int min_count, unsigned long flags,
40 					    gfp_t gfp)
41 {
42 	if (!(flags & SLAB_NOLEAKTRACE))
43 		kmemleak_alloc(ptr, size, min_count, gfp);
44 }
45 
46 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
47 {
48 	if (!(flags & SLAB_NOLEAKTRACE))
49 		kmemleak_free(ptr);
50 }
51 
52 static inline void kmemleak_erase(void **ptr)
53 {
54 	*ptr = NULL;
55 }
56 
57 #else
58 
59 static inline void kmemleak_init(void)
60 {
61 }
62 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
63 				  gfp_t gfp)
64 {
65 }
66 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
67 					    int min_count, unsigned long flags,
68 					    gfp_t gfp)
69 {
70 }
71 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
72 {
73 }
74 static inline void kmemleak_free(const void *ptr)
75 {
76 }
77 static inline void kmemleak_free_part(const void *ptr, size_t size)
78 {
79 }
80 static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
81 {
82 }
83 static inline void kmemleak_free_percpu(const void __percpu *ptr)
84 {
85 }
86 static inline void kmemleak_not_leak(const void *ptr)
87 {
88 }
89 static inline void kmemleak_ignore(const void *ptr)
90 {
91 }
92 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
93 {
94 }
95 static inline void kmemleak_erase(void **ptr)
96 {
97 }
98 static inline void kmemleak_no_scan(const void *ptr)
99 {
100 }
101 
102 #endif	/* CONFIG_DEBUG_KMEMLEAK */
103 
104 #endif	/* __KMEMLEAK_H */
105