include/trace/events/writeback.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM writeback
   3
   4 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_WRITEBACK_H
   6
   7 #include <linux/backing-dev.h>
   8 #include <linux/device.h>
   9 #include <linux/writeback.h>
  10
  11 #define show_inode_state(state)                                 \
  12         __print_flags(state, "|",                               \
  13                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  14                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  15                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  16                 {I_NEW,                 "I_NEW"},               \
  17                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  18                 {I_FREEING,             "I_FREEING"},           \
  19                 {I_CLEAR,               "I_CLEAR"},             \
  20                 {I_SYNC,                "I_SYNC"},              \
  21                 {I_REFERENCED,          "I_REFERENCED"}         \
  22         )
  23
  24 struct wb_writeback_work;
  25
  26 DECLARE_EVENT_CLASS(writeback_work_class,
  27         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
  28         TP_ARGS(bdi, work),
  29         TP_STRUCT__entry(
  30                 __array(char, name, 32)
  31                 __field(long, nr_pages)
  32                 __field(dev_t, sb_dev)
  33                 __field(int, sync_mode)
  34                 __field(int, for_kupdate)
  35                 __field(int, range_cyclic)
  36                 __field(int, for_background)
  37         ),
  38         TP_fast_assign(
  39                 strncpy(__entry->name, dev_name(bdi->dev), 32);
  40                 __entry->nr_pages = work->nr_pages;
  41                 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
  42                 __entry->sync_mode = work->sync_mode;
  43                 __entry->for_kupdate = work->for_kupdate;
  44                 __entry->range_cyclic = work->range_cyclic;
  45                 __entry->for_background = work->for_background;
  46         ),
  47         TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
  48                   "kupdate=%d range_cyclic=%d background=%d",
  49                   __entry->name,
  50                   MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
  51                   __entry->nr_pages,
  52                   __entry->sync_mode,
  53                   __entry->for_kupdate,
  54                   __entry->range_cyclic,
  55                   __entry->for_background
  56         )
  57 );
  58 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
  59 DEFINE_EVENT(writeback_work_class, name, \
  60         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
  61         TP_ARGS(bdi, work))
  62 DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread);
  63 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
  64 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
  65 DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
  66 DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
  67 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
  68
  69 TRACE_EVENT(writeback_pages_written,
  70         TP_PROTO(long pages_written),
  71         TP_ARGS(pages_written),
  72         TP_STRUCT__entry(
  73                 __field(long,           pages)
  74         ),
  75         TP_fast_assign(
  76                 __entry->pages          = pages_written;
  77         ),
  78         TP_printk("%ld", __entry->pages)
  79 );
  80
  81 DECLARE_EVENT_CLASS(writeback_class,
  82         TP_PROTO(struct backing_dev_info *bdi),
  83         TP_ARGS(bdi),
  84         TP_STRUCT__entry(
  85                 __array(char, name, 32)
  86         ),
  87         TP_fast_assign(
  88                 strncpy(__entry->name, dev_name(bdi->dev), 32);
  89         ),
  90         TP_printk("bdi %s",
  91                   __entry->name
  92         )
  93 );
  94 #define DEFINE_WRITEBACK_EVENT(name) \
  95 DEFINE_EVENT(writeback_class, name, \
  96         TP_PROTO(struct backing_dev_info *bdi), \
  97         TP_ARGS(bdi))
  98
  99 DEFINE_WRITEBACK_EVENT(writeback_nowork);
 100 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
 101 DEFINE_WRITEBACK_EVENT(writeback_wake_thread);
 102 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread);
 103 DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
 104 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
 105 DEFINE_WRITEBACK_EVENT(writeback_thread_start);
 106 DEFINE_WRITEBACK_EVENT(writeback_thread_stop);
 107 DEFINE_WRITEBACK_EVENT(balance_dirty_start);
 108 DEFINE_WRITEBACK_EVENT(balance_dirty_wait);
 109
 110 TRACE_EVENT(balance_dirty_written,
 111
 112         TP_PROTO(struct backing_dev_info *bdi, int written),
 113
 114         TP_ARGS(bdi, written),
 115
 116         TP_STRUCT__entry(
 117                 __array(char,   name, 32)
 118                 __field(int,    written)
 119         ),
 120
 121         TP_fast_assign(
 122                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 123                 __entry->written = written;
 124         ),
 125
 126         TP_printk("bdi %s written %d",
 127                   __entry->name,
 128                   __entry->written
 129         )
 130 );
 131
 132 DECLARE_EVENT_CLASS(wbc_class,
 133         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 134         TP_ARGS(wbc, bdi),
 135         TP_STRUCT__entry(
 136                 __array(char, name, 32)
 137                 __field(long, nr_to_write)
 138                 __field(long, pages_skipped)
 139                 __field(int, sync_mode)
 140                 __field(int, for_kupdate)
 141                 __field(int, for_background)
 142                 __field(int, for_reclaim)
 143                 __field(int, range_cyclic)
 144                 __field(long, range_start)
 145                 __field(long, range_end)
 146         ),
 147
 148         TP_fast_assign(
 149                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 150                 __entry->nr_to_write    = wbc->nr_to_write;
 151                 __entry->pages_skipped  = wbc->pages_skipped;
 152                 __entry->sync_mode      = wbc->sync_mode;
 153                 __entry->for_kupdate    = wbc->for_kupdate;
 154                 __entry->for_background = wbc->for_background;
 155                 __entry->for_reclaim    = wbc->for_reclaim;
 156                 __entry->range_cyclic   = wbc->range_cyclic;
 157                 __entry->range_start    = (long)wbc->range_start;
 158                 __entry->range_end      = (long)wbc->range_end;
 159         ),
 160
 161         TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 162                 "bgrd=%d reclm=%d cyclic=%d "
 163                 "start=0x%lx end=0x%lx",
 164                 __entry->name,
 165                 __entry->nr_to_write,
 166                 __entry->pages_skipped,
 167                 __entry->sync_mode,
 168                 __entry->for_kupdate,
 169                 __entry->for_background,
 170                 __entry->for_reclaim,
 171                 __entry->range_cyclic,
 172                 __entry->range_start,
 173                 __entry->range_end)
 174 )
 175
 176 #define DEFINE_WBC_EVENT(name) \
 177 DEFINE_EVENT(wbc_class, name, \
 178         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 179         TP_ARGS(wbc, bdi))
 180 DEFINE_WBC_EVENT(wbc_writepage);
 181
 182 TRACE_EVENT(writeback_queue_io,
 183         TP_PROTO(struct bdi_writeback *wb,
 184                  unsigned long *older_than_this,
 185                  int moved),
 186         TP_ARGS(wb, older_than_this, moved),
 187         TP_STRUCT__entry(
 188                 __array(char,           name, 32)
 189                 __field(unsigned long,  older)
 190                 __field(long,           age)
 191                 __field(int,            moved)
 192         ),
 193         TP_fast_assign(
 194                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 195                 __entry->older  = older_than_this ?  *older_than_this : 0;
 196                 __entry->age    = older_than_this ?
 197                                   (jiffies - *older_than_this) * 1000 / HZ : -1;
 198                 __entry->moved  = moved;
 199         ),
 200         TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
 201                 __entry->name,
 202                 __entry->older, /* older_than_this in jiffies */
 203                 __entry->age,   /* older_than_this in relative milliseconds */
 204                 __entry->moved)
 205 );
 206
 207 TRACE_EVENT(global_dirty_state,
 208
 209         TP_PROTO(unsigned long background_thresh,
 210                  unsigned long dirty_thresh
 211         ),
 212
 213         TP_ARGS(background_thresh,
 214                 dirty_thresh
 215         ),
 216
 217         TP_STRUCT__entry(
 218                 __field(unsigned long,  nr_dirty)
 219                 __field(unsigned long,  nr_writeback)
 220                 __field(unsigned long,  nr_unstable)
 221                 __field(unsigned long,  background_thresh)
 222                 __field(unsigned long,  dirty_thresh)
 223                 __field(unsigned long,  dirty_limit)
 224                 __field(unsigned long,  nr_dirtied)
 225                 __field(unsigned long,  nr_written)
 226         ),
 227
 228         TP_fast_assign(
 229                 __entry->nr_dirty       = global_page_state(NR_FILE_DIRTY);
 230                 __entry->nr_writeback   = global_page_state(NR_WRITEBACK);
 231                 __entry->nr_unstable    = global_page_state(NR_UNSTABLE_NFS);
 232                 __entry->nr_dirtied     = global_page_state(NR_DIRTIED);
 233                 __entry->nr_written     = global_page_state(NR_WRITTEN);
 234                 __entry->background_thresh = background_thresh;
 235                 __entry->dirty_thresh   = dirty_thresh;
 236                 __entry->dirty_limit = global_dirty_limit;
 237         ),
 238
 239         TP_printk("dirty=%lu writeback=%lu unstable=%lu "
 240                   "bg_thresh=%lu thresh=%lu limit=%lu "
 241                   "dirtied=%lu written=%lu",
 242                   __entry->nr_dirty,
 243                   __entry->nr_writeback,
 244                   __entry->nr_unstable,
 245                   __entry->background_thresh,
 246                   __entry->dirty_thresh,
 247                   __entry->dirty_limit,
 248                   __entry->nr_dirtied,
 249                   __entry->nr_written
 250         )
 251 );
 252
 253 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 254
 255         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 256
 257         TP_ARGS(usec_timeout, usec_delayed),
 258
 259         TP_STRUCT__entry(
 260                 __field(        unsigned int,   usec_timeout    )
 261                 __field(        unsigned int,   usec_delayed    )
 262         ),
 263
 264         TP_fast_assign(
 265                 __entry->usec_timeout   = usec_timeout;
 266                 __entry->usec_delayed   = usec_delayed;
 267         ),
 268
 269         TP_printk("usec_timeout=%u usec_delayed=%u",
 270                         __entry->usec_timeout,
 271                         __entry->usec_delayed)
 272 );
 273
 274 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 275
 276         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 277
 278         TP_ARGS(usec_timeout, usec_delayed)
 279 );
 280
 281 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 282
 283         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 284
 285         TP_ARGS(usec_timeout, usec_delayed)
 286 );
 287
 288 DECLARE_EVENT_CLASS(writeback_single_inode_template,
 289
 290         TP_PROTO(struct inode *inode,
 291                  struct writeback_control *wbc,
 292                  unsigned long nr_to_write
 293         ),
 294
 295         TP_ARGS(inode, wbc, nr_to_write),
 296
 297         TP_STRUCT__entry(
 298                 __array(char, name, 32)
 299                 __field(unsigned long, ino)
 300                 __field(unsigned long, state)
 301                 __field(unsigned long, age)
 302                 __field(unsigned long, writeback_index)
 303                 __field(long, nr_to_write)
 304                 __field(unsigned long, wrote)
 305         ),
 306
 307         TP_fast_assign(
 308                 strncpy(__entry->name,
 309                         dev_name(inode->i_mapping->backing_dev_info->dev), 32);
 310                 __entry->ino            = inode->i_ino;
 311                 __entry->state          = inode->i_state;
 312                 __entry->age            = (jiffies - inode->dirtied_when) *
 313                                                                 1000 / HZ;
 314                 __entry->writeback_index = inode->i_mapping->writeback_index;
 315                 __entry->nr_to_write    = nr_to_write;
 316                 __entry->wrote          = nr_to_write - wbc->nr_to_write;
 317         ),
 318
 319         TP_printk("bdi %s: ino=%lu state=%s age=%lu "
 320                   "index=%lu to_write=%ld wrote=%lu",
 321                   __entry->name,
 322                   __entry->ino,
 323                   show_inode_state(__entry->state),
 324                   __entry->age,
 325                   __entry->writeback_index,
 326                   __entry->nr_to_write,
 327                   __entry->wrote
 328         )
 329 );
 330
 331 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
 332         TP_PROTO(struct inode *inode,
 333                  struct writeback_control *wbc,
 334                  unsigned long nr_to_write),
 335         TP_ARGS(inode, wbc, nr_to_write)
 336 );
 337
 338 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 339         TP_PROTO(struct inode *inode,
 340                  struct writeback_control *wbc,
 341                  unsigned long nr_to_write),
 342         TP_ARGS(inode, wbc, nr_to_write)
 343 );
 344
 345 #endif /* _TRACE_WRITEBACK_H */
 346
 347 /* This part must be outside protection */
 348 #include <trace/define_trace.h>