LXR linux/include/linux/kmemleak.h

   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
  29extern void kmemleak_init(void) __init;
  30extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  31                           gfp_t gfp) __ref;
  32extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  33                                  gfp_t gfp) __ref;
  34extern void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
  35                             gfp_t gfp) __ref;
  36extern void kmemleak_free(const void *ptr) __ref;
  37extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
  38extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
  39extern void kmemleak_update_trace(const void *ptr) __ref;
  40extern void kmemleak_not_leak(const void *ptr) __ref;
  41extern void kmemleak_ignore(const void *ptr) __ref;
  42extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
  43extern void kmemleak_no_scan(const void *ptr) __ref;
  44extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
  45                                gfp_t gfp) __ref;
  46extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
  47extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref;
  48extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
  49
  50static 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
  58static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  59{
  60        if (!(flags & SLAB_NOLEAKTRACE))
  61                kmemleak_free(ptr);
  62}
  63
  64static inline void kmemleak_erase(void **ptr)
  65{
  66        *ptr = NULL;
  67}
  68
  69#else
  70
  71static inline void kmemleak_init(void)
  72{
  73}
  74static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
  75                                  gfp_t gfp)
  76{
  77}
  78static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
  79                                            int min_count, unsigned long flags,
  80                                            gfp_t gfp)
  81{
  82}
  83static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
  84                                         gfp_t gfp)
  85{
  86}
  87static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
  88                                    gfp_t gfp)
  89{
  90}
  91static inline void kmemleak_free(const void *ptr)
  92{
  93}
  94static inline void kmemleak_free_part(const void *ptr, size_t size)
  95{
  96}
  97static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
  98{
  99}
 100static inline void kmemleak_free_percpu(const void __percpu *ptr)
 101{
 102}
 103static inline void kmemleak_update_trace(const void *ptr)
 104{
 105}
 106static inline void kmemleak_not_leak(const void *ptr)
 107{
 108}
 109static inline void kmemleak_ignore(const void *ptr)
 110{
 111}
 112static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 113{
 114}
 115static inline void kmemleak_erase(void **ptr)
 116{
 117}
 118static inline void kmemleak_no_scan(const void *ptr)
 119{
 120}
 121static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
 122                                       int min_count, gfp_t gfp)
 123{
 124}
 125static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
 126{
 127}
 128static inline void kmemleak_not_leak_phys(phys_addr_t phys)
 129{
 130}
 131static inline void kmemleak_ignore_phys(phys_addr_t phys)
 132{
 133}
 134
 135#endif  /* CONFIG_DEBUG_KMEMLEAK */
 136
 137#endif  /* __KMEMLEAK_H */
 138