include/linux/kmemleak.h

   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_transient_leak(const void *ptr) __ref;
  30 extern void kmemleak_ignore(const void *ptr) __ref;
  31 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  32 extern void kmemleak_no_scan(const void *ptr) __ref;
  33 extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
  34                                 gfp_t gfp) __ref;
  35 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __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_transient_leak(const void *ptr)
  98 {
  99 }
 100 static inline void kmemleak_ignore(const void *ptr)
 101 {
 102 }
 103 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 104 {
 105 }
 106 static inline void kmemleak_erase(void **ptr)
 107 {
 108 }
 109 static inline void kmemleak_no_scan(const void *ptr)
 110 {
 111 }
 112 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
 113                                        gfp_t gfp)
 114 {
 115 }
 116 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
 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 */