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, int min_count, 33 gfp_t gfp) __ref; 34 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref; 35 extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref; 36 extern void kmemleak_ignore_phys(phys_addr_t phys) __ref; 37 38 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size, 39 int min_count, slab_flags_t 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, slab_flags_t 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, slab_flags_t flags, 68 gfp_t gfp) 69 { 70 } 71 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size, 72 gfp_t gfp) 73 { 74 } 75 static inline void kmemleak_vmalloc(const struct vm_struct *area, 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, slab_flags_t 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 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size, 110 int min_count, gfp_t gfp) 111 { 112 } 113 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size) 114 { 115 } 116 static inline void kmemleak_not_leak_phys(phys_addr_t phys) 117 { 118 } 119 static inline void kmemleak_ignore_phys(phys_addr_t phys) 120 { 121 } 122 123 #endif /* CONFIG_DEBUG_KMEMLEAK */ 124 125 #endif /* __KMEMLEAK_H */ 126