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
 108 DECLARE_EVENT_CLASS(wbc_class,
 109         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 110         TP_ARGS(wbc, bdi),
 111         TP_STRUCT__entry(
 112                 __array(char, name, 32)
 113                 __field(long, nr_to_write)
 114                 __field(long, pages_skipped)
 115                 __field(int, sync_mode)
 116                 __field(int, for_kupdate)
 117                 __field(int, for_background)
 118                 __field(int, for_reclaim)
 119                 __field(int, range_cyclic)
 120                 __field(long, range_start)
 121                 __field(long, range_end)
 122         ),
 123
 124         TP_fast_assign(
 125                 strncpy(__entry->name, dev_name(bdi->dev), 32);
 126                 __entry->nr_to_write    = wbc->nr_to_write;
 127                 __entry->pages_skipped  = wbc->pages_skipped;
 128                 __entry->sync_mode      = wbc->sync_mode;
 129                 __entry->for_kupdate    = wbc->for_kupdate;
 130                 __entry->for_background = wbc->for_background;
 131                 __entry->for_reclaim    = wbc->for_reclaim;
 132                 __entry->range_cyclic   = wbc->range_cyclic;
 133                 __entry->range_start    = (long)wbc->range_start;
 134                 __entry->range_end      = (long)wbc->range_end;
 135         ),
 136
 137         TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
 138                 "bgrd=%d reclm=%d cyclic=%d "
 139                 "start=0x%lx end=0x%lx",
 140                 __entry->name,
 141                 __entry->nr_to_write,
 142                 __entry->pages_skipped,
 143                 __entry->sync_mode,
 144                 __entry->for_kupdate,
 145                 __entry->for_background,
 146                 __entry->for_reclaim,
 147                 __entry->range_cyclic,
 148                 __entry->range_start,
 149                 __entry->range_end)
 150 )
 151
 152 #define DEFINE_WBC_EVENT(name) \
 153 DEFINE_EVENT(wbc_class, name, \
 154         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 155         TP_ARGS(wbc, bdi))
 156 DEFINE_WBC_EVENT(wbc_writepage);
 157
 158 TRACE_EVENT(writeback_queue_io,
 159         TP_PROTO(struct bdi_writeback *wb,
 160                  struct wb_writeback_work *work,
 161                  int moved),
 162         TP_ARGS(wb, work, moved),
 163         TP_STRUCT__entry(
 164                 __array(char,           name, 32)
 165                 __field(unsigned long,  older)
 166                 __field(long,           age)
 167                 __field(int,            moved)
 168         ),
 169         TP_fast_assign(
 170                 unsigned long *older_than_this = work->older_than_this;
 171                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
 172                 __entry->older  = older_than_this ?  *older_than_this : 0;
 173                 __entry->age    = older_than_this ?
 174                                   (jiffies - *older_than_this) * 1000 / HZ : -1;
 175                 __entry->moved  = moved;
 176         ),
 177         TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
 178                 __entry->name,
 179                 __entry->older, /* older_than_this in jiffies */
 180                 __entry->age,   /* older_than_this in relative milliseconds */
 181                 __entry->moved)
 182 );
 183
 184 TRACE_EVENT(global_dirty_state,
 185
 186         TP_PROTO(unsigned long background_thresh,
 187                  unsigned long dirty_thresh
 188         ),
 189
 190         TP_ARGS(background_thresh,
 191                 dirty_thresh
 192         ),
 193
 194         TP_STRUCT__entry(
 195                 __field(unsigned long,  nr_dirty)
 196                 __field(unsigned long,  nr_writeback)
 197                 __field(unsigned long,  nr_unstable)
 198                 __field(unsigned long,  background_thresh)
 199                 __field(unsigned long,  dirty_thresh)
 200                 __field(unsigned long,  dirty_limit)
 201                 __field(unsigned long,  nr_dirtied)
 202                 __field(unsigned long,  nr_written)
 203         ),
 204
 205         TP_fast_assign(
 206                 __entry->nr_dirty       = global_page_state(NR_FILE_DIRTY);
 207                 __entry->nr_writeback   = global_page_state(NR_WRITEBACK);
 208                 __entry->nr_unstable    = global_page_state(NR_UNSTABLE_NFS);
 209                 __entry->nr_dirtied     = global_page_state(NR_DIRTIED);
 210                 __entry->nr_written     = global_page_state(NR_WRITTEN);
 211                 __entry->background_thresh = background_thresh;
 212                 __entry->dirty_thresh   = dirty_thresh;
 213                 __entry->dirty_limit = global_dirty_limit;
 214         ),
 215
 216         TP_printk("dirty=%lu writeback=%lu unstable=%lu "
 217                   "bg_thresh=%lu thresh=%lu limit=%lu "
 218                   "dirtied=%lu written=%lu",
 219                   __entry->nr_dirty,
 220                   __entry->nr_writeback,
 221                   __entry->nr_unstable,
 222                   __entry->background_thresh,
 223                   __entry->dirty_thresh,
 224                   __entry->dirty_limit,
 225                   __entry->nr_dirtied,
 226                   __entry->nr_written
 227         )
 228 );
 229
 230 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 231
 232 TRACE_EVENT(bdi_dirty_ratelimit,
 233
 234         TP_PROTO(struct backing_dev_info *bdi,
 235                  unsigned long dirty_rate,
 236                  unsigned long task_ratelimit),
 237
 238         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 239
 240         TP_STRUCT__entry(
 241                 __array(char,           bdi, 32)
 242                 __field(unsigned long,  write_bw)
 243                 __field(unsigned long,  avg_write_bw)
 244                 __field(unsigned long,  dirty_rate)
 245                 __field(unsigned long,  dirty_ratelimit)
 246                 __field(unsigned long,  task_ratelimit)
 247                 __field(unsigned long,  balanced_dirty_ratelimit)
 248         ),
 249
 250         TP_fast_assign(
 251                 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 252                 __entry->write_bw       = KBps(bdi->write_bandwidth);
 253                 __entry->avg_write_bw   = KBps(bdi->avg_write_bandwidth);
 254                 __entry->dirty_rate     = KBps(dirty_rate);
 255                 __entry->dirty_ratelimit = KBps(bdi->dirty_ratelimit);
 256                 __entry->task_ratelimit = KBps(task_ratelimit);
 257                 __entry->balanced_dirty_ratelimit =
 258                                           KBps(bdi->balanced_dirty_ratelimit);
 259         ),
 260
 261         TP_printk("bdi %s: "
 262                   "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
 263                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 264                   "balanced_dirty_ratelimit=%lu",
 265                   __entry->bdi,
 266                   __entry->write_bw,            /* write bandwidth */
 267                   __entry->avg_write_bw,        /* avg write bandwidth */
 268                   __entry->dirty_rate,          /* bdi dirty rate */
 269                   __entry->dirty_ratelimit,     /* base ratelimit */
 270                   __entry->task_ratelimit, /* ratelimit with position control */
 271                   __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
 272         )
 273 );
 274
 275 TRACE_EVENT(balance_dirty_pages,
 276
 277         TP_PROTO(struct backing_dev_info *bdi,
 278                  unsigned long thresh,
 279                  unsigned long bg_thresh,
 280                  unsigned long dirty,
 281                  unsigned long bdi_thresh,
 282                  unsigned long bdi_dirty,
 283                  unsigned long dirty_ratelimit,
 284                  unsigned long task_ratelimit,
 285                  unsigned long dirtied,
 286                  long pause,
 287                  unsigned long start_time),
 288
 289         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 290                 dirty_ratelimit, task_ratelimit,
 291                 dirtied, pause, start_time),
 292
 293         TP_STRUCT__entry(
 294                 __array(         char,  bdi, 32)
 295                 __field(unsigned long,  limit)
 296                 __field(unsigned long,  setpoint)
 297                 __field(unsigned long,  dirty)
 298                 __field(unsigned long,  bdi_setpoint)
 299                 __field(unsigned long,  bdi_dirty)
 300                 __field(unsigned long,  dirty_ratelimit)
 301                 __field(unsigned long,  task_ratelimit)
 302                 __field(unsigned int,   dirtied)
 303                 __field(unsigned int,   dirtied_pause)
 304                 __field(unsigned long,  paused)
 305                 __field(         long,  pause)
 306         ),
 307
 308         TP_fast_assign(
 309                 unsigned long freerun = (thresh + bg_thresh) / 2;
 310                 strlcpy(__entry->bdi, dev_name(bdi->dev), 32);
 311
 312                 __entry->limit          = global_dirty_limit;
 313                 __entry->setpoint       = (global_dirty_limit + freerun) / 2;
 314                 __entry->dirty          = dirty;
 315                 __entry->bdi_setpoint   = __entry->setpoint *
 316                                                 bdi_thresh / (thresh + 1);
 317                 __entry->bdi_dirty      = bdi_dirty;
 318                 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
 319                 __entry->task_ratelimit = KBps(task_ratelimit);
 320                 __entry->dirtied        = dirtied;
 321                 __entry->dirtied_pause  = current->nr_dirtied_pause;
 322                 __entry->pause          = pause * 1000 / HZ;
 323                 __entry->paused         = (jiffies - start_time) * 1000 / HZ;
 324         ),
 325
 326
 327         TP_printk("bdi %s: "
 328                   "limit=%lu setpoint=%lu dirty=%lu "
 329                   "bdi_setpoint=%lu bdi_dirty=%lu "
 330                   "dirty_ratelimit=%lu task_ratelimit=%lu "
 331                   "dirtied=%u dirtied_pause=%u "
 332                   "paused=%lu pause=%ld",
 333                   __entry->bdi,
 334                   __entry->limit,
 335                   __entry->setpoint,
 336                   __entry->dirty,
 337                   __entry->bdi_setpoint,
 338                   __entry->bdi_dirty,
 339                   __entry->dirty_ratelimit,
 340                   __entry->task_ratelimit,
 341                   __entry->dirtied,
 342                   __entry->dirtied_pause,
 343                   __entry->paused,      /* ms */
 344                   __entry->pause        /* ms */
 345           )
 346 );
 347
 348 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 349
 350         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 351
 352         TP_ARGS(usec_timeout, usec_delayed),
 353
 354         TP_STRUCT__entry(
 355                 __field(        unsigned int,   usec_timeout    )
 356                 __field(        unsigned int,   usec_delayed    )
 357         ),
 358
 359         TP_fast_assign(
 360                 __entry->usec_timeout   = usec_timeout;
 361                 __entry->usec_delayed   = usec_delayed;
 362         ),
 363
 364         TP_printk("usec_timeout=%u usec_delayed=%u",
 365                         __entry->usec_timeout,
 366                         __entry->usec_delayed)
 367 );
 368
 369 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
 370
 371         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 372
 373         TP_ARGS(usec_timeout, usec_delayed)
 374 );
 375
 376 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 377
 378         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 379
 380         TP_ARGS(usec_timeout, usec_delayed)
 381 );
 382
 383 DECLARE_EVENT_CLASS(writeback_single_inode_template,
 384
 385         TP_PROTO(struct inode *inode,
 386                  struct writeback_control *wbc,
 387                  unsigned long nr_to_write
 388         ),
 389
 390         TP_ARGS(inode, wbc, nr_to_write),
 391
 392         TP_STRUCT__entry(
 393                 __array(char, name, 32)
 394                 __field(unsigned long, ino)
 395                 __field(unsigned long, state)
 396                 __field(unsigned long, dirtied_when)
 397                 __field(unsigned long, writeback_index)
 398                 __field(long, nr_to_write)
 399                 __field(unsigned long, wrote)
 400         ),
 401
 402         TP_fast_assign(
 403                 strncpy(__entry->name,
 404                         dev_name(inode->i_mapping->backing_dev_info->dev), 32);
 405                 __entry->ino            = inode->i_ino;
 406                 __entry->state          = inode->i_state;
 407                 __entry->dirtied_when   = inode->dirtied_when;
 408                 __entry->writeback_index = inode->i_mapping->writeback_index;
 409                 __entry->nr_to_write    = nr_to_write;
 410                 __entry->wrote          = nr_to_write - wbc->nr_to_write;
 411         ),
 412
 413         TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
 414                   "index=%lu to_write=%ld wrote=%lu",
 415                   __entry->name,
 416                   __entry->ino,
 417                   show_inode_state(__entry->state),
 418                   __entry->dirtied_when,
 419                   (jiffies - __entry->dirtied_when) / HZ,
 420                   __entry->writeback_index,
 421                   __entry->nr_to_write,
 422                   __entry->wrote
 423         )
 424 );
 425
 426 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
 427         TP_PROTO(struct inode *inode,
 428                  struct writeback_control *wbc,
 429                  unsigned long nr_to_write),
 430         TP_ARGS(inode, wbc, nr_to_write)
 431 );
 432
 433 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 434         TP_PROTO(struct inode *inode,
 435                  struct writeback_control *wbc,
 436                  unsigned long nr_to_write),
 437         TP_ARGS(inode, wbc, nr_to_write)
 438 );
 439
 440 #endif /* _TRACE_WRITEBACK_H */
 441
 442 /* This part must be outside protection */
 443 #include <trace/define_trace.h>