fs/iomap/trace.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2009-2021 Christoph Hellwig
   4  *
   5  * NOTE: none of these tracepoints shall be considered a stable kernel ABI
   6  * as they can change at any time.
   7  *
   8  * Current conventions for printing numbers measuring specific units:
   9  *
  10  * offset: byte offset into a subcomponent of a file operation
  11  * pos: file offset, in bytes
  12  * length: length of a file operation, in bytes
  13  * ino: inode number
  14  *
  15  * Numbers describing space allocations should be formatted in hexadecimal.
  16  */
  17 #undef TRACE_SYSTEM
  18 #define TRACE_SYSTEM iomap
  19
  20 #if !defined(_IOMAP_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
  21 #define _IOMAP_TRACE_H
  22
  23 #include <linux/tracepoint.h>
  24
  25 struct inode;
  26
  27 DECLARE_EVENT_CLASS(iomap_readpage_class,
  28         TP_PROTO(struct inode *inode, int nr_pages),
  29         TP_ARGS(inode, nr_pages),
  30         TP_STRUCT__entry(
  31                 __field(dev_t, dev)
  32                 __field(u64, ino)
  33                 __field(int, nr_pages)
  34         ),
  35         TP_fast_assign(
  36                 __entry->dev = inode->i_sb->s_dev;
  37                 __entry->ino = inode->i_ino;
  38                 __entry->nr_pages = nr_pages;
  39         ),
  40         TP_printk("dev %d:%d ino 0x%llx nr_pages %d",
  41                   MAJOR(__entry->dev), MINOR(__entry->dev),
  42                   __entry->ino,
  43                   __entry->nr_pages)
  44 )
  45
  46 #define DEFINE_READPAGE_EVENT(name)             \
  47 DEFINE_EVENT(iomap_readpage_class, name,        \
  48         TP_PROTO(struct inode *inode, int nr_pages), \
  49         TP_ARGS(inode, nr_pages))
  50 DEFINE_READPAGE_EVENT(iomap_readpage);
  51 DEFINE_READPAGE_EVENT(iomap_readahead);
  52
  53 DECLARE_EVENT_CLASS(iomap_range_class,
  54         TP_PROTO(struct inode *inode, loff_t off, u64 len),
  55         TP_ARGS(inode, off, len),
  56         TP_STRUCT__entry(
  57                 __field(dev_t, dev)
  58                 __field(u64, ino)
  59                 __field(loff_t, size)
  60                 __field(loff_t, offset)
  61                 __field(u64, length)
  62         ),
  63         TP_fast_assign(
  64                 __entry->dev = inode->i_sb->s_dev;
  65                 __entry->ino = inode->i_ino;
  66                 __entry->size = i_size_read(inode);
  67                 __entry->offset = off;
  68                 __entry->length = len;
  69         ),
  70         TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx length 0x%llx",
  71                   MAJOR(__entry->dev), MINOR(__entry->dev),
  72                   __entry->ino,
  73                   __entry->size,
  74                   __entry->offset,
  75                   __entry->length)
  76 )
  77
  78 #define DEFINE_RANGE_EVENT(name)                \
  79 DEFINE_EVENT(iomap_range_class, name,   \
  80         TP_PROTO(struct inode *inode, loff_t off, u64 len),\
  81         TP_ARGS(inode, off, len))
  82 DEFINE_RANGE_EVENT(iomap_writepage);
  83 DEFINE_RANGE_EVENT(iomap_releasepage);
  84 DEFINE_RANGE_EVENT(iomap_invalidate_folio);
  85 DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail);
  86
  87 #define IOMAP_TYPE_STRINGS \
  88         { IOMAP_HOLE,           "HOLE" }, \
  89         { IOMAP_DELALLOC,       "DELALLOC" }, \
  90         { IOMAP_MAPPED,         "MAPPED" }, \
  91         { IOMAP_UNWRITTEN,      "UNWRITTEN" }, \
  92         { IOMAP_INLINE,         "INLINE" }
  93
  94 #define IOMAP_FLAGS_STRINGS \
  95         { IOMAP_WRITE,          "WRITE" }, \
  96         { IOMAP_ZERO,           "ZERO" }, \
  97         { IOMAP_REPORT,         "REPORT" }, \
  98         { IOMAP_FAULT,          "FAULT" }, \
  99         { IOMAP_DIRECT,         "DIRECT" }, \
 100         { IOMAP_NOWAIT,         "NOWAIT" }
 101
 102 #define IOMAP_F_FLAGS_STRINGS \
 103         { IOMAP_F_NEW,          "NEW" }, \
 104         { IOMAP_F_DIRTY,        "DIRTY" }, \
 105         { IOMAP_F_SHARED,       "SHARED" }, \
 106         { IOMAP_F_MERGED,       "MERGED" }, \
 107         { IOMAP_F_BUFFER_HEAD,  "BH" }, \
 108         { IOMAP_F_SIZE_CHANGED, "SIZE_CHANGED" }
 109
 110 DECLARE_EVENT_CLASS(iomap_class,
 111         TP_PROTO(struct inode *inode, struct iomap *iomap),
 112         TP_ARGS(inode, iomap),
 113         TP_STRUCT__entry(
 114                 __field(dev_t, dev)
 115                 __field(u64, ino)
 116                 __field(u64, addr)
 117                 __field(loff_t, offset)
 118                 __field(u64, length)
 119                 __field(u16, type)
 120                 __field(u16, flags)
 121                 __field(dev_t, bdev)
 122         ),
 123         TP_fast_assign(
 124                 __entry->dev = inode->i_sb->s_dev;
 125                 __entry->ino = inode->i_ino;
 126                 __entry->addr = iomap->addr;
 127                 __entry->offset = iomap->offset;
 128                 __entry->length = iomap->length;
 129                 __entry->type = iomap->type;
 130                 __entry->flags = iomap->flags;
 131                 __entry->bdev = iomap->bdev ? iomap->bdev->bd_dev : 0;
 132         ),
 133         TP_printk("dev %d:%d ino 0x%llx bdev %d:%d addr 0x%llx offset 0x%llx "
 134                   "length 0x%llx type %s flags %s",
 135                   MAJOR(__entry->dev), MINOR(__entry->dev),
 136                   __entry->ino,
 137                   MAJOR(__entry->bdev), MINOR(__entry->bdev),
 138                   __entry->addr,
 139                   __entry->offset,
 140                   __entry->length,
 141                   __print_symbolic(__entry->type, IOMAP_TYPE_STRINGS),
 142                   __print_flags(__entry->flags, "|", IOMAP_F_FLAGS_STRINGS))
 143 )
 144
 145 #define DEFINE_IOMAP_EVENT(name)                \
 146 DEFINE_EVENT(iomap_class, name, \
 147         TP_PROTO(struct inode *inode, struct iomap *iomap), \
 148         TP_ARGS(inode, iomap))
 149 DEFINE_IOMAP_EVENT(iomap_iter_dstmap);
 150 DEFINE_IOMAP_EVENT(iomap_iter_srcmap);
 151
 152 TRACE_EVENT(iomap_iter,
 153         TP_PROTO(struct iomap_iter *iter, const void *ops,
 154                  unsigned long caller),
 155         TP_ARGS(iter, ops, caller),
 156         TP_STRUCT__entry(
 157                 __field(dev_t, dev)
 158                 __field(u64, ino)
 159                 __field(loff_t, pos)
 160                 __field(u64, length)
 161                 __field(unsigned int, flags)
 162                 __field(const void *, ops)
 163                 __field(unsigned long, caller)
 164         ),
 165         TP_fast_assign(
 166                 __entry->dev = iter->inode->i_sb->s_dev;
 167                 __entry->ino = iter->inode->i_ino;
 168                 __entry->pos = iter->pos;
 169                 __entry->length = iomap_length(iter);
 170                 __entry->flags = iter->flags;
 171                 __entry->ops = ops;
 172                 __entry->caller = caller;
 173         ),
 174         TP_printk("dev %d:%d ino 0x%llx pos 0x%llx length 0x%llx flags %s (0x%x) ops %ps caller %pS",
 175                   MAJOR(__entry->dev), MINOR(__entry->dev),
 176                    __entry->ino,
 177                    __entry->pos,
 178                    __entry->length,
 179                    __print_flags(__entry->flags, "|", IOMAP_FLAGS_STRINGS),
 180                    __entry->flags,
 181                    __entry->ops,
 182                    (void *)__entry->caller)
 183 );
 184
 185 #endif /* _IOMAP_TRACE_H */
 186
 187 #undef TRACE_INCLUDE_PATH
 188 #define TRACE_INCLUDE_PATH .
 189 #define TRACE_INCLUDE_FILE trace
 190 #include <trace/define_trace.h>