instrumentation/events/lttng-module/writeback.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   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 <probes/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(5,9,0))
  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_REFERENCED,          "I_REFERENCED"}         \
  62         )
  63 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
  64 #define show_inode_state(state)                                 \
  65         __print_flags(state, "|",                               \
  66                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  67                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  68                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  69                 {I_NEW,                 "I_NEW"},               \
  70                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  71                 {I_FREEING,             "I_FREEING"},           \
  72                 {I_CLEAR,               "I_CLEAR"},             \
  73                 {I_SYNC,                "I_SYNC"},              \
  74                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  75                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  76                 {I_REFERENCED,          "I_REFERENCED"}         \
  77         )
  78 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
  79 #define show_inode_state(state)                                 \
  80         __print_flags(state, "|",                               \
  81                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  82                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  83                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  84                 {I_NEW,                 "I_NEW"},               \
  85                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  86                 {I_FREEING,             "I_FREEING"},           \
  87                 {I_CLEAR,               "I_CLEAR"},             \
  88                 {I_SYNC,                "I_SYNC"},              \
  89                 {I_REFERENCED,          "I_REFERENCED"}         \
  90         )
  91 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
  92
  93 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
  94
  95 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
  96         TP_PROTO(struct page *page, struct address_space *mapping),
  97         TP_ARGS(page, mapping),
  98         TP_FIELDS(
  99                 ctf_array_text(char, name,
 100                         mapping ? dev_name(lttng_inode_to_bdi(mapping->host)->dev) : "(unknown)", 32)
 101                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 102                 ctf_integer(pgoff_t, index, page->index)
 103         )
 104 )
 105
 106 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 107         TP_PROTO(struct inode *inode, int flags),
 108         TP_ARGS(inode, flags),
 109         TP_FIELDS(
 110                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 111                 ctf_array_text(char, name,
 112                         lttng_inode_to_bdi(inode)->dev ?
 113                                 dev_name(lttng_inode_to_bdi(inode)->dev) : "(unknown)", 32)
 114                 ctf_integer(unsigned long, ino, inode->i_ino)
 115                 ctf_integer(unsigned long, state, inode->i_state)
 116                 ctf_integer(unsigned long, flags, flags)
 117         )
 118 )
 119 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 120 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 121         TP_PROTO(struct inode *inode, int flags), \
 122         TP_ARGS(inode, flags))
 123 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 124 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 125 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
 126
 127 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 128         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 129         TP_ARGS(inode, wbc),
 130         TP_FIELDS(
 131                 ctf_array_text(char, name,
 132                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 133                 ctf_integer(unsigned long, ino, inode->i_ino)
 134                 ctf_integer(int, sync_mode, wbc->sync_mode)
 135         )
 136 )
 137
 138 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 139 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 140         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 141         TP_ARGS(inode, wbc))
 142 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 143 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 144
 145 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 146
 147 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 148         TP_PROTO(struct page *page, struct address_space *mapping),
 149         TP_ARGS(page, mapping),
 150         TP_FIELDS(
 151                 ctf_array_text(char, name,
 152                         mapping ? dev_name(mapping->backing_dev_info->dev) : "(unknown)", 32)
 153                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 154                 ctf_integer(pgoff_t, index, page->index)
 155         )
 156 )
 157
 158 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 159         TP_PROTO(struct inode *inode, int flags),
 160         TP_ARGS(inode, flags),
 161         TP_FIELDS(
 162                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 163                 ctf_array_text(char, name,
 164                         inode->i_mapping->backing_dev_info->dev ?
 165                                 dev_name(inode->i_mapping->backing_dev_info->dev)
 166                                 : "(unknown)", 32)
 167                 ctf_integer(unsigned long, ino, inode->i_ino)
 168                 ctf_integer(unsigned long, flags, flags)
 169         )
 170 )
 171 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 172 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 173         TP_PROTO(struct inode *inode, int flags), \
 174         TP_ARGS(inode, flags))
 175 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 176 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 177
 178 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 179         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 180         TP_ARGS(inode, wbc),
 181         TP_FIELDS(
 182                 ctf_array_text(char, name,
 183                         dev_name(inode->i_mapping->backing_dev_info->dev), 32)
 184                 ctf_integer(unsigned long, ino, inode->i_ino)
 185                 ctf_integer(int, sync_mode, wbc->sync_mode)
 186         )
 187 )
 188
 189 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 190 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 191         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 192         TP_ARGS(inode, wbc))
 193 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 194 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 195
 196 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
 197
 198 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 199
 200 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 201         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 202         TP_ARGS(wb, work),
 203         TP_FIELDS(
 204                 ctf_array_text(char, name, wb->bdi->dev ? dev_name(wb->bdi->dev) :
 205                                 "(unknown)", 32)
 206         )
 207 )
 208
 209 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
 210
 211 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 212         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 213         TP_ARGS(bdi, work),
 214         TP_FIELDS(
 215                 ctf_array_text(char, name, bdi->dev ? dev_name(bdi->dev) :
 216                                 "(unknown)", 32)
 217         )
 218 )
 219
 220 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 221
 222 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 223         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 224         TP_ARGS(bdi, work),
 225         TP_FIELDS(
 226                 ctf_array_text(char, name,
 227                         dev_name(bdi->dev ? bdi->dev :
 228                                 default_backing_dev_info.dev), 32)
 229         )
 230 )
 231
 232 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 233
 234 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 235
 236 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 237 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 238         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 239         TP_ARGS(wb, work))
 240
 241 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 242
 243 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 244 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 245         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 246         TP_ARGS(bdi, work))
 247
 248 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 249
 250 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
 251 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
 252 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 253 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 254 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
 255 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
 256 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 257 #endif
 258
 259 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 260         TP_PROTO(long pages_written),
 261         TP_ARGS(pages_written),
 262         TP_FIELDS(
 263                 ctf_integer(long, pages, pages_written)
 264         )
 265 )
 266
 267 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 268
 269 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 270         TP_PROTO(struct bdi_writeback *wb),
 271         TP_ARGS(wb),
 272         TP_FIELDS(
 273                 ctf_array_text(char, name,
 274                         dev_name(wb->bdi->dev), 32)
 275         )
 276 )
 277
 278 #undef DEFINE_WRITEBACK_EVENT
 279 #define DEFINE_WRITEBACK_EVENT(name) \
 280 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 281         TP_PROTO(struct bdi_writeback *wb), \
 282         TP_ARGS(wb))
 283
 284 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 285 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 286         TP_PROTO(struct bdi_writeback *wb), \
 287         TP_ARGS(wb))
 288
 289 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register,
 290         TP_PROTO(struct backing_dev_info *bdi),
 291         TP_ARGS(bdi),
 292         TP_FIELDS(
 293                 ctf_array_text(char, name,
 294                         dev_name(bdi->dev), 32)
 295         )
 296 )
 297
 298 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 299
 300 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 301         TP_PROTO(struct backing_dev_info *bdi),
 302         TP_ARGS(bdi),
 303         TP_FIELDS(
 304                 ctf_array_text(char, name,
 305                         dev_name(bdi->dev), 32)
 306         )
 307 )
 308
 309 #undef DEFINE_WRITEBACK_EVENT
 310 #define DEFINE_WRITEBACK_EVENT(name) \
 311 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 312         TP_PROTO(struct backing_dev_info *bdi), \
 313         TP_ARGS(bdi))
 314
 315 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 316 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 317         TP_PROTO(struct backing_dev_info *bdi), \
 318         TP_ARGS(bdi))
 319
 320 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
 321
 322 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 323
 324 DEFINE_WRITEBACK_EVENT(writeback_nowork)
 325 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
 326 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
 327 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
 328 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 329 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 330 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 331 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
 332 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
 333 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
 334
 335 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 336
 337         writeback_balance_dirty_written,
 338
 339         TP_PROTO(struct backing_dev_info *bdi, int written),
 340
 341         TP_ARGS(bdi, written),
 342
 343         TP_FIELDS(
 344                 ctf_array_text(char, name, dev_name(bdi->dev), 32)
 345                 ctf_integer(int, written, written)
 346         )
 347 )
 348 #endif
 349
 350 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 351         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 352         TP_ARGS(wbc, bdi),
 353         TP_FIELDS(
 354                 ctf_array_text(char, name, dev_name(bdi->dev), 32)
 355                 ctf_integer(long, nr_to_write, wbc->nr_to_write)
 356                 ctf_integer(long, pages_skipped, wbc->pages_skipped)
 357                 ctf_integer(int, sync_mode, wbc->sync_mode)
 358                 ctf_integer(int, for_kupdate, wbc->for_kupdate)
 359                 ctf_integer(int, for_background, wbc->for_background)
 360                 ctf_integer(int, for_reclaim, wbc->for_reclaim)
 361                 ctf_integer(int, range_cyclic, wbc->range_cyclic)
 362 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
 363                 ctf_integer(int, more_io, wbc->more_io)
 364                 ctf_integer(unsigned long, older_than_this,
 365                         wbc->older_than_this ? *wbc->older_than_this : 0)
 366 #endif
 367                 ctf_integer(long, range_start, (long) wbc->range_start)
 368                 ctf_integer(long, range_end, (long) wbc->range_end)
 369         )
 370 )
 371
 372 #undef DEFINE_WBC_EVENT
 373 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
 374 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 375         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 376         TP_ARGS(wbc, bdi))
 377 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
 378 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
 379 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
 380 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
 381 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
 382 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
 383 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 384 #endif
 385 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 386
 387 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0))
 388 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 389         TP_PROTO(struct bdi_writeback *wb,
 390                  struct wb_writeback_work *work,
 391                  unsigned long dirtied_before,
 392                  int moved),
 393         TP_ARGS(wb, work, dirtied_before, moved),
 394         TP_FIELDS(
 395                 ctf_array_text(char, name, dev_name(wb->bdi->dev), 32)
 396                 ctf_integer(unsigned long, older, dirtied_before)
 397                 ctf_integer(int, moved, moved)
 398         )
 399 )
 400 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 401 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 402         TP_PROTO(struct bdi_writeback *wb,
 403                  struct wb_writeback_work *work,
 404                  int moved),
 405         TP_ARGS(wb, work, moved),
 406         TP_FIELDS(
 407                 ctf_array_text(char, name, dev_name(wb->bdi->dev), 32)
 408                 ctf_integer(int, moved, moved)
 409         )
 410 )
 411 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 412 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 413         TP_PROTO(struct bdi_writeback *wb,
 414                  unsigned long *older_than_this,
 415                  int moved),
 416         TP_ARGS(wb, older_than_this, moved),
 417         TP_FIELDS(
 418                 ctf_array_text(char, name, dev_name(wb->bdi->dev), 32)
 419                 ctf_integer(unsigned long, older,
 420                         older_than_this ? *older_than_this : 0)
 421                 ctf_integer(long, age,
 422                         older_than_this ?
 423                                 (jiffies - *older_than_this) * 1000 / HZ
 424                                 : -1)
 425                 ctf_integer(int, moved, moved)
 426         )
 427 )
 428 #endif
 429
 430 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
 431 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 432
 433         writeback_global_dirty_state,
 434
 435         TP_PROTO(unsigned long background_thresh,
 436                  unsigned long dirty_thresh
 437         ),
 438
 439         TP_ARGS(background_thresh,
 440                 dirty_thresh
 441         ),
 442
 443         TP_FIELDS(
 444                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 445                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 446                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 447                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 448                 ctf_integer(unsigned long, background_thresh, background_thresh)
 449                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 450                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 451         )
 452 )
 453 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
 454 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 455
 456         writeback_global_dirty_state,
 457
 458         TP_PROTO(unsigned long background_thresh,
 459                  unsigned long dirty_thresh
 460         ),
 461
 462         TP_ARGS(background_thresh,
 463                 dirty_thresh
 464         ),
 465
 466         TP_FIELDS(
 467                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 468                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 469                 ctf_integer(unsigned long, nr_unstable, global_node_page_state(NR_UNSTABLE_NFS))
 470                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 471                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 472                 ctf_integer(unsigned long, background_thresh, background_thresh)
 473                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 474                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 475         )
 476 )
 477 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 478 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 479
 480         writeback_global_dirty_state,
 481
 482         TP_PROTO(unsigned long background_thresh,
 483                  unsigned long dirty_thresh
 484         ),
 485
 486         TP_ARGS(background_thresh,
 487                 dirty_thresh
 488         ),
 489
 490         TP_FIELDS(
 491                 ctf_integer(unsigned long, nr_dirty, global_page_state(NR_FILE_DIRTY))
 492                 ctf_integer(unsigned long, nr_writeback, global_page_state(NR_WRITEBACK))
 493                 ctf_integer(unsigned long, nr_unstable, global_page_state(NR_UNSTABLE_NFS))
 494                 ctf_integer(unsigned long, nr_dirtied, global_page_state(NR_DIRTIED))
 495                 ctf_integer(unsigned long, nr_written, global_page_state(NR_WRITTEN))
 496                 ctf_integer(unsigned long, background_thresh, background_thresh)
 497                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 498                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 499         )
 500 )
 501 #endif
 502
 503 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 504
 505 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 506
 507 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 508
 509 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 510
 511         writeback_bdi_dirty_ratelimit,
 512
 513         TP_PROTO(struct bdi_writeback *wb,
 514                  unsigned long dirty_rate,
 515                  unsigned long task_ratelimit),
 516
 517         TP_ARGS(wb, dirty_rate, task_ratelimit),
 518
 519         TP_FIELDS(
 520                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 521                 ctf_integer(unsigned long, write_bw, KBps(wb->bdi->wb.write_bandwidth))
 522                 ctf_integer(unsigned long, avg_write_bw, KBps(wb->bdi->wb.avg_write_bandwidth))
 523                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 524                 ctf_integer(unsigned long, dirty_ratelimit, KBps(wb->bdi->wb.dirty_ratelimit))
 525                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 526                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 527                                         KBps(wb->bdi->wb.balanced_dirty_ratelimit))
 528         )
 529 )
 530
 531 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
 532
 533 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 534
 535         writeback_bdi_dirty_ratelimit,
 536
 537         TP_PROTO(struct backing_dev_info *bdi,
 538                  unsigned long dirty_rate,
 539                  unsigned long task_ratelimit),
 540
 541         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 542
 543         TP_FIELDS(
 544                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 545                 ctf_integer(unsigned long, write_bw, KBps(bdi->wb.write_bandwidth))
 546                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->wb.avg_write_bandwidth))
 547                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 548                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->wb.dirty_ratelimit))
 549                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 550                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 551                                         KBps(bdi->wb.balanced_dirty_ratelimit))
 552         )
 553 )
 554
 555 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 556
 557 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 558
 559         writeback_bdi_dirty_ratelimit,
 560
 561         TP_PROTO(struct backing_dev_info *bdi,
 562                  unsigned long dirty_rate,
 563                  unsigned long task_ratelimit),
 564
 565         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 566
 567         TP_FIELDS(
 568                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 569                 ctf_integer(unsigned long, write_bw, KBps(bdi->write_bandwidth))
 570                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->avg_write_bandwidth))
 571                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 572                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->dirty_ratelimit))
 573                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 574                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 575                                         KBps(bdi->balanced_dirty_ratelimit))
 576         )
 577 )
 578
 579 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 580
 581 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 582
 583 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 584
 585         writeback_balance_dirty_pages,
 586
 587         TP_PROTO(struct bdi_writeback *wb,
 588                  unsigned long thresh,
 589                  unsigned long bg_thresh,
 590                  unsigned long dirty,
 591                  unsigned long bdi_thresh,
 592                  unsigned long bdi_dirty,
 593                  unsigned long dirty_ratelimit,
 594                  unsigned long task_ratelimit,
 595                  unsigned long dirtied,
 596                  unsigned long period,
 597                  long pause,
 598                  unsigned long start_time),
 599
 600         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 601                 dirty_ratelimit, task_ratelimit,
 602                 dirtied, period, pause, start_time
 603         ),
 604
 605         TP_FIELDS(
 606                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 607                 ctf_integer(unsigned long, limit, global_dirty_limit)
 608                 ctf_integer(unsigned long, setpoint,
 609                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 610                 ctf_integer(unsigned long, dirty, dirty)
 611                 ctf_integer(unsigned long, bdi_setpoint,
 612                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 613                                 bdi_thresh / (thresh + 1))
 614                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 615                 ctf_integer(unsigned long, dirty_ratelimit,
 616                         KBps(dirty_ratelimit))
 617                 ctf_integer(unsigned long, task_ratelimit,
 618                         KBps(task_ratelimit))
 619                 ctf_integer(unsigned int, dirtied, dirtied)
 620                 ctf_integer(unsigned int, dirtied_pause,
 621                         current->nr_dirtied_pause)
 622                 ctf_integer(unsigned long, paused,
 623                         (jiffies - start_time) * 1000 / HZ)
 624                 ctf_integer(long, pause, pause * 1000 / HZ)
 625                 ctf_integer(unsigned long, period,
 626                         period * 1000 / HZ)
 627                 ctf_integer(long, think,
 628                         current->dirty_paused_when == 0 ? 0 :
 629                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 630         )
 631 )
 632
 633 #else /* #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 634
 635 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 636
 637         writeback_balance_dirty_pages,
 638
 639         TP_PROTO(struct backing_dev_info *bdi,
 640                  unsigned long thresh,
 641                  unsigned long bg_thresh,
 642                  unsigned long dirty,
 643                  unsigned long bdi_thresh,
 644                  unsigned long bdi_dirty,
 645                  unsigned long dirty_ratelimit,
 646                  unsigned long task_ratelimit,
 647                  unsigned long dirtied,
 648 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 649                  unsigned long period,
 650 #endif
 651                  long pause,
 652                  unsigned long start_time),
 653
 654         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 655                 dirty_ratelimit, task_ratelimit,
 656 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 657                 dirtied, period, pause, start_time
 658 #else
 659                 dirtied, pause, start_time
 660 #endif
 661         ),
 662
 663         TP_FIELDS(
 664                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 665                 ctf_integer(unsigned long, limit, global_dirty_limit)
 666                 ctf_integer(unsigned long, setpoint,
 667                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 668                 ctf_integer(unsigned long, dirty, dirty)
 669                 ctf_integer(unsigned long, bdi_setpoint,
 670                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 671                                 bdi_thresh / (thresh + 1))
 672                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 673                 ctf_integer(unsigned long, dirty_ratelimit,
 674                         KBps(dirty_ratelimit))
 675                 ctf_integer(unsigned long, task_ratelimit,
 676                         KBps(task_ratelimit))
 677                 ctf_integer(unsigned int, dirtied, dirtied)
 678                 ctf_integer(unsigned int, dirtied_pause,
 679                         current->nr_dirtied_pause)
 680                 ctf_integer(unsigned long, paused,
 681                         (jiffies - start_time) * 1000 / HZ)
 682                 ctf_integer(long, pause, pause * 1000 / HZ)
 683 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 684                 ctf_integer(unsigned long, period,
 685                         period * 1000 / HZ)
 686                 ctf_integer(long, think,
 687                         current->dirty_paused_when == 0 ? 0 :
 688                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 689 #endif
 690         )
 691 )
 692 #endif /* #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 693
 694 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
 695
 696 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
 697 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 698
 699         TP_PROTO(struct inode *inode),
 700         TP_ARGS(inode),
 701
 702         TP_FIELDS(
 703                 ctf_array_text(char, name,
 704                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 705                 ctf_integer(unsigned long, ino, inode->i_ino)
 706                 ctf_integer(unsigned long, state, inode->i_state)
 707                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 708         )
 709 )
 710 #endif
 711
 712 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 713
 714         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 715
 716         TP_ARGS(usec_timeout, usec_delayed),
 717
 718         TP_FIELDS(
 719                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 720                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 721         )
 722 )
 723
 724 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 725
 726         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 727
 728         TP_ARGS(usec_timeout, usec_delayed)
 729 )
 730
 731 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 732
 733         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 734
 735         TP_ARGS(usec_timeout, usec_delayed)
 736 )
 737
 738 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 739 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 740
 741         TP_PROTO(struct inode *inode,
 742                  struct writeback_control *wbc,
 743                  unsigned long nr_to_write
 744         ),
 745
 746         TP_ARGS(inode, wbc, nr_to_write),
 747
 748         TP_FIELDS(
 749                 ctf_array_text(char, name,
 750                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 751                 ctf_integer(unsigned long, ino, inode->i_ino)
 752                 ctf_integer(unsigned long, state, inode->i_state)
 753                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 754                 ctf_integer(unsigned long, writeback_index,
 755                         inode->i_mapping->writeback_index)
 756                 ctf_integer(long, nr_to_write, nr_to_write)
 757                 ctf_integer(unsigned long, wrote,
 758                         nr_to_write - wbc->nr_to_write)
 759         )
 760 )
 761
 762 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
 763 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 764         TP_PROTO(struct inode *inode,
 765                 struct writeback_control *wbc,
 766                 unsigned long nr_to_write),
 767         TP_ARGS(inode, wbc, nr_to_write)
 768 )
 769 #endif
 770
 771 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 772         TP_PROTO(struct inode *inode,
 773                  struct writeback_control *wbc,
 774                  unsigned long nr_to_write),
 775         TP_ARGS(inode, wbc, nr_to_write)
 776 )
 777 #endif
 778
 779 #endif /* LTTNG_TRACE_WRITEBACK_H */
 780
 781 /* This part must be outside protection */
 782 #include <probes/define_trace.h>