1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * include/linux/kmemleak.h 4 * 5 * Copyright (C) 2008 ARM Limited 6 * Written by Catalin Marinas <catalin.marinas@arm.com> 7 */ 8 9 #ifndef __KMEMLEAK_H 10 #define __KMEMLEAK_H 11 12 #include <linux/slab.h> 13 #include <linux/vmalloc.h> 14 15 #ifdef CONFIG_DEBUG_KMEMLEAK 16 17 extern void kmemleak_init(void) __init; 18 extern void kmemleak_alloc(const void *ptr, size_t size, int min_count, 19 gfp_t gfp) __ref; 20 extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size, 21 gfp_t gfp) __ref; 22 extern void kmemleak_vmalloc(const struct vm_struct *area, size_t size, 23 gfp_t gfp) __ref; 24 extern void kmemleak_free(const void *ptr) __ref; 25 extern void kmemleak_free_part(const void *ptr, size_t size) __ref; 26 extern void kmemleak_free_percpu(const void __percpu *ptr) __ref; 27 extern void kmemleak_update_trace(const void *ptr) __ref; 28 extern void kmemleak_not_leak(const void *ptr) __ref; 29 extern void kmemleak_ignore(const void *ptr) __ref; 30 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref; 31 extern void kmemleak_no_scan(const void *ptr) __ref; 32 extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, 33 gfp_t gfp) __ref; 34 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref; 35 extern void kmemleak_ignore_phys(phys_addr_t phys) __ref; 36 37 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size, 38 int min_count, slab_flags_t flags, 39 gfp_t gfp) 40 { 41 if (!(flags & SLAB_NOLEAKTRACE)) 42 kmemleak_alloc(ptr, size, min_count, gfp); 43 } 44 45 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags) 46 { 47 if (!(flags & SLAB_NOLEAKTRACE)) 48 kmemleak_free(ptr); 49 } 50 51 static inline void kmemleak_erase(void **ptr) 52 { 53 *ptr = NULL; 54 } 55 56 #else 57 58 static inline void kmemleak_init(void) 59 { 60 } 61 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count, 62 gfp_t gfp) 63 { 64 } 65 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size, 66 int min_count, slab_flags_t flags, 67 gfp_t gfp) 68 { 69 } 70 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size, 71 gfp_t gfp) 72 { 73 } 74 static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size, 75 gfp_t gfp) 76 { 77 } 78 static inline void kmemleak_free(const void *ptr) 79 { 80 } 81 static inline void kmemleak_free_part(const void *ptr, size_t size) 82 { 83 } 84 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags) 85 { 86 } 87 static inline void kmemleak_free_percpu(const void __percpu *ptr) 88 { 89 } 90 static inline void kmemleak_update_trace(const void *ptr) 91 { 92 } 93 static inline void kmemleak_not_leak(const void *ptr) 94 { 95 } 96 static inline void kmemleak_ignore(const void *ptr) 97 { 98 } 99 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) 100 { 101 } 102 static inline void kmemleak_erase(void **ptr) 103 { 104 } 105 static inline void kmemleak_no_scan(const void *ptr) 106 { 107 } 108 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size, 109 gfp_t gfp) 110 { 111 } 112 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size) 113 { 114 } 115 static inline void kmemleak_ignore_phys(phys_addr_t phys) 116 { 117 } 118 119 #endif /* CONFIG_DEBUG_KMEMLEAK */ 120 121 #endif /* __KMEMLEAK_H */ 122