include/trace/events/pagemap.h

   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(struct page *page),
  31
  32         TP_ARGS(page),
  33
  34         TP_STRUCT__entry(
  35                 __field(struct page *,  page    )
  36                 __field(unsigned long,  pfn     )
  37                 __field(enum lru_list,  lru     )
  38                 __field(unsigned long,  flags   )
  39         ),
  40
  41         TP_fast_assign(
  42                 __entry->page   = page;
  43                 __entry->pfn    = page_to_pfn(page);
  44                 __entry->lru    = page_lru(page);
  45                 __entry->flags  = trace_pagemap_flags(page);
  46         ),
  47
  48         /* Flag format is based on page-types.c formatting for pagemap */
  49         TP_printk("page=%p pfn=0x%lx lru=%d flags=%s%s%s%s%s%s",
  50                         __entry->page,
  51                         __entry->pfn,
  52                         __entry->lru,
  53                         __entry->flags & PAGEMAP_MAPPED         ? "M" : " ",
  54                         __entry->flags & PAGEMAP_ANONYMOUS      ? "a" : "f",
  55                         __entry->flags & PAGEMAP_SWAPCACHE      ? "s" : " ",
  56                         __entry->flags & PAGEMAP_SWAPBACKED     ? "b" : " ",
  57                         __entry->flags & PAGEMAP_MAPPEDDISK     ? "d" : " ",
  58                         __entry->flags & PAGEMAP_BUFFERS        ? "B" : " ")
  59 );
  60
  61 TRACE_EVENT(mm_lru_activate,
  62
  63         TP_PROTO(struct page *page),
  64
  65         TP_ARGS(page),
  66
  67         TP_STRUCT__entry(
  68                 __field(struct page *,  page    )
  69                 __field(unsigned long,  pfn     )
  70         ),
  71
  72         TP_fast_assign(
  73                 __entry->page   = page;
  74                 __entry->pfn    = page_to_pfn(page);
  75         ),
  76
  77         /* Flag format is based on page-types.c formatting for pagemap */
  78         TP_printk("page=%p pfn=0x%lx", __entry->page, __entry->pfn)
  79
  80 );
  81
  82 #endif /* _TRACE_PAGEMAP_H */
  83
  84 /* This part must be outside protection */
  85 #include <trace/define_trace.h>