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Linux/include/linux/kmemleak.h

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

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