root/include/trace/events/pagemap.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM pagemap
   4 
   5 #if !defined(_TRACE_PAGEMAP_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define _TRACE_PAGEMAP_H
   7 
   8 #include <linux/tracepoint.h>
   9 #include <linux/mm.h>
  10 
  11 #define PAGEMAP_MAPPED          0x0001u
  12 #define PAGEMAP_ANONYMOUS       0x0002u
  13 #define PAGEMAP_FILE            0x0004u
  14 #define PAGEMAP_SWAPCACHE       0x0008u
  15 #define PAGEMAP_SWAPBACKED      0x0010u
  16 #define PAGEMAP_MAPPEDDISK      0x0020u
  17 #define PAGEMAP_BUFFERS         0x0040u
  18 
  19 #define trace_pagemap_flags(page) ( \
  20         (PageAnon(page)         ? PAGEMAP_ANONYMOUS  : PAGEMAP_FILE) | \
  21         (page_mapped(page)      ? PAGEMAP_MAPPED     : 0) | \
  22         (PageSwapCache(page)    ? PAGEMAP_SWAPCACHE  : 0) | \
  23         (PageSwapBacked(page)   ? PAGEMAP_SWAPBACKED : 0) | \
  24         (PageMappedToDisk(page) ? PAGEMAP_MAPPEDDISK : 0) | \
  25         (page_has_private(page) ? PAGEMAP_BUFFERS    : 0) \
  26         )
  27 
  28 TRACE_EVENT(mm_lru_insertion,
  29 
  30         TP_PROTO(
  31                 struct page *page,
  32                 int lru
  33         ),
  34 
  35         TP_ARGS(page, lru),
  36 
  37         TP_STRUCT__entry(
  38                 __field(struct page *,  page    )
  39                 __field(unsigned long,  pfn     )
  40                 __field(int,            lru     )
  41                 __field(unsigned long,  flags   )
  42         ),
  43 
  44         TP_fast_assign(
  45                 __entry->page   = page;
  46                 __entry->pfn    = page_to_pfn(page);
  47                 __entry->lru    = lru;
  48                 __entry->flags  = trace_pagemap_flags(page);
  49         ),
  50 
  51         /* Flag format is based on page-types.c formatting for pagemap */
  52         TP_printk("page=%p pfn=%lu lru=%d flags=%s%s%s%s%s%s",
  53                         __entry->page,
  54                         __entry->pfn,
  55                         __entry->lru,
  56                         __entry->flags & PAGEMAP_MAPPED         ? "M" : " ",
  57                         __entry->flags & PAGEMAP_ANONYMOUS      ? "a" : "f",
  58                         __entry->flags & PAGEMAP_SWAPCACHE      ? "s" : " ",
  59                         __entry->flags & PAGEMAP_SWAPBACKED     ? "b" : " ",
  60                         __entry->flags & PAGEMAP_MAPPEDDISK     ? "d" : " ",
  61                         __entry->flags & PAGEMAP_BUFFERS        ? "B" : " ")
  62 );
  63 
  64 TRACE_EVENT(mm_lru_activate,
  65 
  66         TP_PROTO(struct page *page),
  67 
  68         TP_ARGS(page),
  69 
  70         TP_STRUCT__entry(
  71                 __field(struct page *,  page    )
  72                 __field(unsigned long,  pfn     )
  73         ),
  74 
  75         TP_fast_assign(
  76                 __entry->page   = page;
  77                 __entry->pfn    = page_to_pfn(page);
  78         ),
  79 
  80         /* Flag format is based on page-types.c formatting for pagemap */
  81         TP_printk("page=%p pfn=%lu", __entry->page, __entry->pfn)
  82 
  83 );
  84 
  85 #endif /* _TRACE_PAGEMAP_H */
  86 
  87 /* This part must be outside protection */
  88 #include <trace/define_trace.h>