kernel/include/trace/events/filemap.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM filemap
   3
   4 #if !defined(_TRACE_FILEMAP_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_FILEMAP_H
   6
   7 #include <linux/types.h>
   8 #include <linux/tracepoint.h>
   9 #include <linux/mm.h>
  10 #include <linux/memcontrol.h>
  11 #include <linux/device.h>
  12 #include <linux/kdev_t.h>
  13
  14 DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,
  15
  16         TP_PROTO(struct page *page),
  17
  18         TP_ARGS(page),
  19
  20         TP_STRUCT__entry(
  21                 __field(unsigned long, pfn)
  22                 __field(unsigned long, i_ino)
  23                 __field(unsigned long, index)
  24                 __field(dev_t, s_dev)
  25         ),
  26
  27         TP_fast_assign(
  28                 __entry->pfn = page_to_pfn(page);
  29                 __entry->i_ino = page->mapping->host->i_ino;
  30                 __entry->index = page->index;
  31                 if (page->mapping->host->i_sb)
  32                         __entry->s_dev = page->mapping->host->i_sb->s_dev;
  33                 else
  34                         __entry->s_dev = page->mapping->host->i_rdev;
  35         ),
  36
  37         TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu",
  38                 MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
  39                 __entry->i_ino,
  40                 pfn_to_page(__entry->pfn),
  41                 __entry->pfn,
  42                 __entry->index << PAGE_SHIFT)
  43 );
  44
  45 DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_delete_from_page_cache,
  46         TP_PROTO(struct page *page),
  47         TP_ARGS(page)
  48         );
  49
  50 DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_add_to_page_cache,
  51         TP_PROTO(struct page *page),
  52         TP_ARGS(page)
  53         );
  54
  55 #endif /* _TRACE_FILEMAP_H */
  56
  57 /* This part must be outside protection */
  58 #include <trace/define_trace.h>