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, unsigned long 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, unsigned long 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, unsigned long 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, unsigned long 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