include/instrumentation/events/writeback.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM writeback
   4
   5 #if !defined(LTTNG_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define LTTNG_TRACE_WRITEBACK_H
   7
   8 #include <lttng/tracepoint-event.h>
   9 #include <linux/tracepoint.h>
  10 #include <linux/backing-dev.h>
  11 #include <linux/writeback.h>
  12 #include <linux/version.h>
  13
  14 #ifndef _TRACE_WRITEBACK_DEF_
  15 #define _TRACE_WRITEBACK_DEF_
  16
  17 /*
  18  * Vanilla kernels before 4.0 do not implement inode_to_bdi
  19  * RHEL kernels before 3.10.0-327.10.1 do not implement inode_to_bdi
  20  * RHEL kernel 3.10.0-327.10.1 has inode_to_bdi
  21  * RHEL kernel 3.10.0-327.13.1 includes a partial merge of upstream
  22  *  commit a212b105b07d75b48b1a166378282e8a77fbf53d which inlines
  23  *  inode_to_bdi but not sb_is_blkdev_sb making it unusable by modules.
  24  */
  25 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4,0,0))
  26 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  27 {
  28         struct super_block *sb;
  29
  30         if (!inode)
  31                 return &noop_backing_dev_info;
  32
  33         sb = inode->i_sb;
  34
  35         if (strcmp(sb->s_type->name, "bdev") == 0)
  36                 return inode->i_mapping->backing_dev_info;
  37
  38         return sb->s_bdi;
  39 }
  40 #else
  41 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  42 {
  43         return inode_to_bdi(inode);
  44 }
  45 #endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(4,0,0)) */
  46
  47 #endif
  48
  49 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
  50 #define show_inode_state(state)                                 \
  51         __print_flags(state, "|",                               \
  52                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  53                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  54                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  55                 {I_NEW,                 "I_NEW"},               \
  56                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  57                 {I_FREEING,             "I_FREEING"},           \
  58                 {I_CLEAR,               "I_CLEAR"},             \
  59                 {I_SYNC,                "I_SYNC"},              \
  60                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  61                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  62                 {I_REFERENCED,          "I_REFERENCED"}         \
  63         )
  64 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
  65 #define show_inode_state(state)                                 \
  66         __print_flags(state, "|",                               \
  67                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  68                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  69                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  70                 {I_NEW,                 "I_NEW"},               \
  71                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  72                 {I_FREEING,             "I_FREEING"},           \
  73                 {I_CLEAR,               "I_CLEAR"},             \
  74                 {I_SYNC,                "I_SYNC"},              \
  75                 {I_REFERENCED,          "I_REFERENCED"}         \
  76         )
  77 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
  78
  79 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
  80
  81 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
  82         TP_PROTO(struct page *page, struct address_space *mapping),
  83         TP_ARGS(page, mapping),
  84         TP_FIELDS(
  85                 ctf_array_text(char, name,
  86                         mapping ? dev_name(lttng_inode_to_bdi(mapping->host)->dev) : "(unknown)", 32)
  87                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
  88                 ctf_integer(pgoff_t, index, page->index)
  89         )
  90 )
  91
  92 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
  93         TP_PROTO(struct inode *inode, int flags),
  94         TP_ARGS(inode, flags),
  95         TP_FIELDS(
  96                 /* may be called for files on pseudo FSes w/ unregistered bdi */
  97                 ctf_array_text(char, name,
  98                         lttng_inode_to_bdi(inode)->dev ?
  99                                 dev_name(lttng_inode_to_bdi(inode)->dev) : "(unknown)", 32)
 100                 ctf_integer(unsigned long, ino, inode->i_ino)
 101                 ctf_integer(unsigned long, state, inode->i_state)
 102                 ctf_integer(unsigned long, flags, flags)
 103         )
 104 )
 105 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 106 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 107         TP_PROTO(struct inode *inode, int flags), \
 108         TP_ARGS(inode, flags))
 109 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 110 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 111 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
 112
 113 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 114         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 115         TP_ARGS(inode, wbc),
 116         TP_FIELDS(
 117                 ctf_array_text(char, name,
 118                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 119                 ctf_integer(unsigned long, ino, inode->i_ino)
 120                 ctf_integer(int, sync_mode, wbc->sync_mode)
 121         )
 122 )
 123
 124 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 125 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 126         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 127         TP_ARGS(inode, wbc))
 128 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 129 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 130
 131 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 132
 133 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 134         TP_PROTO(struct page *page, struct address_space *mapping),
 135         TP_ARGS(page, mapping),
 136         TP_FIELDS(
 137                 ctf_array_text(char, name,
 138                         mapping ? dev_name(mapping->backing_dev_info->dev) : "(unknown)", 32)
 139                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 140                 ctf_integer(pgoff_t, index, page->index)
 141         )
 142 )
 143
 144 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 145         TP_PROTO(struct inode *inode, int flags),
 146         TP_ARGS(inode, flags),
 147         TP_FIELDS(
 148                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 149                 ctf_array_text(char, name,
 150                         inode->i_mapping->backing_dev_info->dev ?
 151                                 dev_name(inode->i_mapping->backing_dev_info->dev)
 152                                 : "(unknown)", 32)
 153                 ctf_integer(unsigned long, ino, inode->i_ino)
 154                 ctf_integer(unsigned long, flags, flags)
 155         )
 156 )
 157 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 158 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 159         TP_PROTO(struct inode *inode, int flags), \
 160         TP_ARGS(inode, flags))
 161 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 162 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 163
 164 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 165         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 166         TP_ARGS(inode, wbc),
 167         TP_FIELDS(
 168                 ctf_array_text(char, name,
 169                         dev_name(inode->i_mapping->backing_dev_info->dev), 32)
 170                 ctf_integer(unsigned long, ino, inode->i_ino)
 171                 ctf_integer(int, sync_mode, wbc->sync_mode)
 172         )
 173 )
 174
 175 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 176 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 177         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 178         TP_ARGS(inode, wbc))
 179 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 180 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 181
 182 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
 183
 184 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 185
 186 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 187         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 188         TP_ARGS(wb, work),
 189         TP_FIELDS(
 190                 ctf_array_text(char, name, wb->bdi->dev ? dev_name(wb->bdi->dev) :
 191                                 "(unknown)", 32)
 192         )
 193 )
 194
 195 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
 196
 197 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 198         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 199         TP_ARGS(bdi, work),
 200         TP_FIELDS(
 201                 ctf_array_text(char, name, bdi->dev ? dev_name(bdi->dev) :
 202                                 "(unknown)", 32)
 203         )
 204 )
 205
 206 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 207
 208 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 209         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 210         TP_ARGS(bdi, work),
 211         TP_FIELDS(
 212                 ctf_array_text(char, name,
 213                         dev_name(bdi->dev ? bdi->dev :
 214                                 default_backing_dev_info.dev), 32)
 215         )
 216 )
 217
 218 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 219
 220 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 221
 222 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 223 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 224         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 225         TP_ARGS(wb, work))
 226
 227 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 228
 229 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 230 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 231         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 232         TP_ARGS(bdi, work))
 233
 234 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 235
 236 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
 237 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
 238 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 239 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 240 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
 241 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
 242 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 243 #endif
 244
 245 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 246         TP_PROTO(long pages_written),
 247         TP_ARGS(pages_written),
 248         TP_FIELDS(
 249                 ctf_integer(long, pages, pages_written)
 250         )
 251 )
 252
 253 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 254
 255 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 256         TP_PROTO(struct bdi_writeback *wb),
 257         TP_ARGS(wb),
 258         TP_FIELDS(
 259                 ctf_array_text(char, name,
 260                         dev_name(wb->bdi->dev), 32)
 261         )
 262 )
 263
 264 #undef DEFINE_WRITEBACK_EVENT
 265 #define DEFINE_WRITEBACK_EVENT(name) \
 266 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 267         TP_PROTO(struct bdi_writeback *wb), \
 268         TP_ARGS(wb))
 269
 270 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 271 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 272         TP_PROTO(struct bdi_writeback *wb), \
 273         TP_ARGS(wb))
 274
 275 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register,
 276         TP_PROTO(struct backing_dev_info *bdi),
 277         TP_ARGS(bdi),
 278         TP_FIELDS(
 279                 ctf_array_text(char, name,
 280                         dev_name(bdi->dev), 32)
 281         )
 282 )
 283
 284 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 285
 286 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 287         TP_PROTO(struct backing_dev_info *bdi),
 288         TP_ARGS(bdi),
 289         TP_FIELDS(
 290                 ctf_array_text(char, name,
 291                         dev_name(bdi->dev), 32)
 292         )
 293 )
 294
 295 #undef DEFINE_WRITEBACK_EVENT
 296 #define DEFINE_WRITEBACK_EVENT(name) \
 297 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 298         TP_PROTO(struct backing_dev_info *bdi), \
 299         TP_ARGS(bdi))
 300
 301 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 302 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 303         TP_PROTO(struct backing_dev_info *bdi), \
 304         TP_ARGS(bdi))
 305
 306 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
 307
 308 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 309
 310 DEFINE_WRITEBACK_EVENT(writeback_nowork)
 311 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
 312 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
 313 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
 314 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 315 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 316 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 317 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
 318 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
 319 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
 320
 321 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 322
 323         writeback_balance_dirty_written,
 324
 325         TP_PROTO(struct backing_dev_info *bdi, int written),
 326
 327         TP_ARGS(bdi, written),
 328
 329         TP_FIELDS(
 330                 ctf_array_text(char, name, dev_name(bdi->dev), 32)
 331                 ctf_integer(int, written, written)
 332         )
 333 )
 334 #endif
 335
 336 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 337         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 338         TP_ARGS(wbc, bdi),
 339         TP_FIELDS(
 340                 ctf_array_text(char, name, dev_name(bdi->dev), 32)
 341                 ctf_integer(long, nr_to_write, wbc->nr_to_write)
 342                 ctf_integer(long, pages_skipped, wbc->pages_skipped)
 343                 ctf_integer(int, sync_mode, wbc->sync_mode)
 344                 ctf_integer(int, for_kupdate, wbc->for_kupdate)
 345                 ctf_integer(int, for_background, wbc->for_background)
 346                 ctf_integer(int, for_reclaim, wbc->for_reclaim)
 347                 ctf_integer(int, range_cyclic, wbc->range_cyclic)
 348 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
 349                 ctf_integer(int, more_io, wbc->more_io)
 350                 ctf_integer(unsigned long, older_than_this,
 351                         wbc->older_than_this ? *wbc->older_than_this : 0)
 352 #endif
 353                 ctf_integer(long, range_start, (long) wbc->range_start)
 354                 ctf_integer(long, range_end, (long) wbc->range_end)
 355         )
 356 )
 357
 358 #undef DEFINE_WBC_EVENT
 359 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
 360 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 361         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 362         TP_ARGS(wbc, bdi))
 363 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
 364 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
 365 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
 366 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
 367 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
 368 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
 369 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 370 #endif
 371 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 372
 373 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 374 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 375         TP_PROTO(struct bdi_writeback *wb,
 376 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 377                  struct wb_writeback_work *work,
 378 #else
 379                  unsigned long *older_than_this,
 380 #endif
 381                  int moved),
 382 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 383         TP_ARGS(wb, work, moved),
 384 #else
 385         TP_ARGS(wb, older_than_this, moved),
 386 #endif
 387         TP_FIELDS(
 388                 ctf_array_text(char, name, dev_name(wb->bdi->dev), 32)
 389 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 390 #else
 391                 ctf_integer(unsigned long, older,
 392                         older_than_this ? *older_than_this : 0)
 393                 ctf_integer(long, age,
 394                         older_than_this ?
 395                                 (jiffies - *older_than_this) * 1000 / HZ
 396                                 : -1)
 397 #endif
 398                 ctf_integer(int, moved, moved)
 399         )
 400 )
 401
 402 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
 403 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 404
 405         writeback_global_dirty_state,
 406
 407         TP_PROTO(unsigned long background_thresh,
 408                  unsigned long dirty_thresh
 409         ),
 410
 411         TP_ARGS(background_thresh,
 412                 dirty_thresh
 413         ),
 414
 415         TP_FIELDS(
 416                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 417                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 418                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 419                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 420                 ctf_integer(unsigned long, background_thresh, background_thresh)
 421                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 422                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 423         )
 424 )
 425 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
 426 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 427
 428         writeback_global_dirty_state,
 429
 430         TP_PROTO(unsigned long background_thresh,
 431                  unsigned long dirty_thresh
 432         ),
 433
 434         TP_ARGS(background_thresh,
 435                 dirty_thresh
 436         ),
 437
 438         TP_FIELDS(
 439                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 440                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 441                 ctf_integer(unsigned long, nr_unstable, global_node_page_state(NR_UNSTABLE_NFS))
 442                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 443                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 444                 ctf_integer(unsigned long, background_thresh, background_thresh)
 445                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 446                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 447         )
 448 )
 449 #else
 450 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 451
 452         writeback_global_dirty_state,
 453
 454         TP_PROTO(unsigned long background_thresh,
 455                  unsigned long dirty_thresh
 456         ),
 457
 458         TP_ARGS(background_thresh,
 459                 dirty_thresh
 460         ),
 461
 462         TP_FIELDS(
 463                 ctf_integer(unsigned long, nr_dirty, global_page_state(NR_FILE_DIRTY))
 464                 ctf_integer(unsigned long, nr_writeback, global_page_state(NR_WRITEBACK))
 465                 ctf_integer(unsigned long, nr_unstable, global_page_state(NR_UNSTABLE_NFS))
 466                 ctf_integer(unsigned long, nr_dirtied, global_page_state(NR_DIRTIED))
 467                 ctf_integer(unsigned long, nr_written, global_page_state(NR_WRITTEN))
 468                 ctf_integer(unsigned long, background_thresh, background_thresh)
 469                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 470                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 471         )
 472 )
 473 #endif
 474 #endif
 475
 476 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 477
 478 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 479
 480 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 481
 482 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 483
 484         writeback_bdi_dirty_ratelimit,
 485
 486         TP_PROTO(struct bdi_writeback *wb,
 487                  unsigned long dirty_rate,
 488                  unsigned long task_ratelimit),
 489
 490         TP_ARGS(wb, dirty_rate, task_ratelimit),
 491
 492         TP_FIELDS(
 493                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 494                 ctf_integer(unsigned long, write_bw, KBps(wb->bdi->wb.write_bandwidth))
 495                 ctf_integer(unsigned long, avg_write_bw, KBps(wb->bdi->wb.avg_write_bandwidth))
 496                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 497                 ctf_integer(unsigned long, dirty_ratelimit, KBps(wb->bdi->wb.dirty_ratelimit))
 498                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 499                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 500                                         KBps(wb->bdi->wb.balanced_dirty_ratelimit))
 501         )
 502 )
 503
 504 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
 505
 506 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 507
 508         writeback_bdi_dirty_ratelimit,
 509
 510         TP_PROTO(struct backing_dev_info *bdi,
 511                  unsigned long dirty_rate,
 512                  unsigned long task_ratelimit),
 513
 514         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 515
 516         TP_FIELDS(
 517                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 518                 ctf_integer(unsigned long, write_bw, KBps(bdi->wb.write_bandwidth))
 519                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->wb.avg_write_bandwidth))
 520                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 521                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->wb.dirty_ratelimit))
 522                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 523                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 524                                         KBps(bdi->wb.balanced_dirty_ratelimit))
 525         )
 526 )
 527
 528 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 529
 530 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 531
 532         writeback_bdi_dirty_ratelimit,
 533
 534         TP_PROTO(struct backing_dev_info *bdi,
 535                  unsigned long dirty_rate,
 536                  unsigned long task_ratelimit),
 537
 538         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 539
 540         TP_FIELDS(
 541                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 542                 ctf_integer(unsigned long, write_bw, KBps(bdi->write_bandwidth))
 543                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->avg_write_bandwidth))
 544                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 545                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->dirty_ratelimit))
 546                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 547                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 548                                         KBps(bdi->balanced_dirty_ratelimit))
 549         )
 550 )
 551
 552 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 553
 554 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 555
 556 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 557
 558         writeback_balance_dirty_pages,
 559
 560         TP_PROTO(struct bdi_writeback *wb,
 561                  unsigned long thresh,
 562                  unsigned long bg_thresh,
 563                  unsigned long dirty,
 564                  unsigned long bdi_thresh,
 565                  unsigned long bdi_dirty,
 566                  unsigned long dirty_ratelimit,
 567                  unsigned long task_ratelimit,
 568                  unsigned long dirtied,
 569                  unsigned long period,
 570                  long pause,
 571                  unsigned long start_time),
 572
 573         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 574                 dirty_ratelimit, task_ratelimit,
 575                 dirtied, period, pause, start_time
 576         ),
 577
 578         TP_FIELDS(
 579                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 580                 ctf_integer(unsigned long, limit, global_dirty_limit)
 581                 ctf_integer(unsigned long, setpoint,
 582                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 583                 ctf_integer(unsigned long, dirty, dirty)
 584                 ctf_integer(unsigned long, bdi_setpoint,
 585                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 586                                 bdi_thresh / (thresh + 1))
 587                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 588                 ctf_integer(unsigned long, dirty_ratelimit,
 589                         KBps(dirty_ratelimit))
 590                 ctf_integer(unsigned long, task_ratelimit,
 591                         KBps(task_ratelimit))
 592                 ctf_integer(unsigned int, dirtied, dirtied)
 593                 ctf_integer(unsigned int, dirtied_pause,
 594                         current->nr_dirtied_pause)
 595                 ctf_integer(unsigned long, paused,
 596                         (jiffies - start_time) * 1000 / HZ)
 597                 ctf_integer(long, pause, pause * 1000 / HZ)
 598                 ctf_integer(unsigned long, period,
 599                         period * 1000 / HZ)
 600                 ctf_integer(long, think,
 601                         current->dirty_paused_when == 0 ? 0 :
 602                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 603         )
 604 )
 605
 606 #else /* #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 607
 608 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 609
 610         writeback_balance_dirty_pages,
 611
 612         TP_PROTO(struct backing_dev_info *bdi,
 613                  unsigned long thresh,
 614                  unsigned long bg_thresh,
 615                  unsigned long dirty,
 616                  unsigned long bdi_thresh,
 617                  unsigned long bdi_dirty,
 618                  unsigned long dirty_ratelimit,
 619                  unsigned long task_ratelimit,
 620                  unsigned long dirtied,
 621 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 622                  unsigned long period,
 623 #endif
 624                  long pause,
 625                  unsigned long start_time),
 626
 627         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 628                 dirty_ratelimit, task_ratelimit,
 629 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 630                 dirtied, period, pause, start_time
 631 #else
 632                 dirtied, pause, start_time
 633 #endif
 634         ),
 635
 636         TP_FIELDS(
 637                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 638                 ctf_integer(unsigned long, limit, global_dirty_limit)
 639                 ctf_integer(unsigned long, setpoint,
 640                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 641                 ctf_integer(unsigned long, dirty, dirty)
 642                 ctf_integer(unsigned long, bdi_setpoint,
 643                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 644                                 bdi_thresh / (thresh + 1))
 645                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 646                 ctf_integer(unsigned long, dirty_ratelimit,
 647                         KBps(dirty_ratelimit))
 648                 ctf_integer(unsigned long, task_ratelimit,
 649                         KBps(task_ratelimit))
 650                 ctf_integer(unsigned int, dirtied, dirtied)
 651                 ctf_integer(unsigned int, dirtied_pause,
 652                         current->nr_dirtied_pause)
 653                 ctf_integer(unsigned long, paused,
 654                         (jiffies - start_time) * 1000 / HZ)
 655                 ctf_integer(long, pause, pause * 1000 / HZ)
 656 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 657                 ctf_integer(unsigned long, period,
 658                         period * 1000 / HZ)
 659                 ctf_integer(long, think,
 660                         current->dirty_paused_when == 0 ? 0 :
 661                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 662 #endif
 663         )
 664 )
 665 #endif /* #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 666
 667 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
 668
 669 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
 670 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 671
 672         TP_PROTO(struct inode *inode),
 673         TP_ARGS(inode),
 674
 675         TP_FIELDS(
 676                 ctf_array_text(char, name,
 677                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 678                 ctf_integer(unsigned long, ino, inode->i_ino)
 679                 ctf_integer(unsigned long, state, inode->i_state)
 680                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 681         )
 682 )
 683 #endif
 684
 685 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 686
 687         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 688
 689         TP_ARGS(usec_timeout, usec_delayed),
 690
 691         TP_FIELDS(
 692                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 693                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 694         )
 695 )
 696
 697 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 698
 699         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 700
 701         TP_ARGS(usec_timeout, usec_delayed)
 702 )
 703
 704 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 705
 706         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 707
 708         TP_ARGS(usec_timeout, usec_delayed)
 709 )
 710
 711 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 712 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 713
 714         TP_PROTO(struct inode *inode,
 715                  struct writeback_control *wbc,
 716                  unsigned long nr_to_write
 717         ),
 718
 719         TP_ARGS(inode, wbc, nr_to_write),
 720
 721         TP_FIELDS(
 722                 ctf_array_text(char, name,
 723                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 724                 ctf_integer(unsigned long, ino, inode->i_ino)
 725                 ctf_integer(unsigned long, state, inode->i_state)
 726                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 727                 ctf_integer(unsigned long, writeback_index,
 728                         inode->i_mapping->writeback_index)
 729                 ctf_integer(long, nr_to_write, nr_to_write)
 730                 ctf_integer(unsigned long, wrote,
 731                         nr_to_write - wbc->nr_to_write)
 732         )
 733 )
 734
 735 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
 736 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 737         TP_PROTO(struct inode *inode,
 738                 struct writeback_control *wbc,
 739                 unsigned long nr_to_write),
 740         TP_ARGS(inode, wbc, nr_to_write)
 741 )
 742 #endif
 743
 744 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 745         TP_PROTO(struct inode *inode,
 746                  struct writeback_control *wbc,
 747                  unsigned long nr_to_write),
 748         TP_ARGS(inode, wbc, nr_to_write)
 749 )
 750 #endif
 751
 752 #endif /* LTTNG_TRACE_WRITEBACK_H */
 753
 754 /* This part must be outside protection */
 755 #include <lttng/define_trace.h>