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                    (unsigned long) bytes_req, (unsigned long) bytes_alloc,
  37                    (unsigned long) gfp_flags, node);
  38 }
  39
  40 static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
  41                                        unsigned long call_site,
  42                                        const void *ptr)
  43 {
  44         trace_mark(kmemtrace_free, "type_id %d call_site %lu ptr %lu",
  45                    type_id, call_site, (unsigned long) ptr);
  46 }
  47
  48 #else /* CONFIG_KMEMTRACE */
  49
  50 static inline void kmemtrace_init(void)
  51 {
  52 }
  53
  54 static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
  55                                              unsigned long call_site,
  56                                              const void *ptr,
  57                                              size_t bytes_req,
  58                                              size_t bytes_alloc,
  59                                              gfp_t gfp_flags,
  60                                              int node)
  61 {
  62 }
  63
  64 static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
  65                                        unsigned long call_site,
  66                                        const void *ptr)
  67 {
  68 }
  69
  70 #endif /* CONFIG_KMEMTRACE */
  71
  72 static inline void kmemtrace_mark_alloc(enum kmemtrace_type_id type_id,
  73                                         unsigned long call_site,
  74                                         const void *ptr,
  75                                         size_t bytes_req,
  76                                         size_t bytes_alloc,
  77                                         gfp_t gfp_flags)
  78 {
  79         kmemtrace_mark_alloc_node(type_id, call_site, ptr,
  80                                   bytes_req, bytes_alloc, gfp_flags, -1);
  81 }
  82
  83 #endif /* __KERNEL__ */
  84
  85 #endif /* _LINUX_KMEMTRACE_H */
  86