include/linux/kmemtrace.h

   1 /*
   2  * Copyright (C) 2008 Eduard - Gabriel Munteanu
   3  *
   4  * This file is released under GPL version 2.
   5  */
   6
   7 #ifndef _LINUX_KMEMTRACE_H
   8 #define _LINUX_KMEMTRACE_H
   9
  10 #ifdef __KERNEL__
  11
  12 #include <linux/types.h>
  13 #include <linux/marker.h>
  14
  15 enum kmemtrace_type_id {
  16         KMEMTRACE_TYPE_KMALLOC = 0,     /* kmalloc() or kfree(). */
  17         KMEMTRACE_TYPE_CACHE,           /* kmem_cache_*(). */
  18         KMEMTRACE_TYPE_PAGES,           /* __get_free_pages() and friends. */
  19 };
  20
  21 #ifdef CONFIG_KMEMTRACE
  22
  23 extern void kmemtrace_init(void);
  24
  25 static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
  26                                              unsigned long call_site,
  27                                              const void *ptr,
  28                                              size_t bytes_req,
  29                                              size_t bytes_alloc,
  30                                              gfp_t gfp_flags,
  31                                              int node)
  32 {
  33         trace_mark(kmemtrace_alloc, "type_id %d call_site %lu ptr %lu "
  34                    "bytes_req %lu bytes_alloc %lu gfp_flags %lu node %d",
  35                    type_id, call_site, (unsigned long) ptr,
  36                    bytes_req, bytes_alloc, (unsigned long) gfp_flags, node);
  37 }
  38
  39 static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
  40                                        unsigned long call_site,
  41                                        const void *ptr)
  42 {
  43         trace_mark(kmemtrace_free, "type_id %d call_site %lu ptr %lu",
  44                    type_id, call_site, (unsigned long) ptr);
  45 }
  46
  47 #else /* CONFIG_KMEMTRACE */
  48
  49 static inline void kmemtrace_init(void)
  50 {
  51 }
  52
  53 static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
  54                                              unsigned long call_site,
  55                                              const void *ptr,
  56                                              size_t bytes_req,
  57                                              size_t bytes_alloc,
  58                                              gfp_t gfp_flags,
  59                                              int node)
  60 {
  61 }
  62
  63 static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
  64                                        unsigned long call_site,
  65                                        const void *ptr)
  66 {
  67 }
  68
  69 #endif /* CONFIG_KMEMTRACE */
  70
  71 static inline void kmemtrace_mark_alloc(enum kmemtrace_type_id type_id,
  72                                         unsigned long call_site,
  73                                         const void *ptr,
  74                                         size_t bytes_req,
  75                                         size_t bytes_alloc,
  76                                         gfp_t gfp_flags)
  77 {
  78         kmemtrace_mark_alloc_node(type_id, call_site, ptr,
  79                                   bytes_req, bytes_alloc, gfp_flags, -1);
  80 }
  81
  82 #endif /* __KERNEL__ */
  83
  84 #endif /* _LINUX_KMEMTRACE_H */
  85