include/instrumentation/events/lttng-module/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(4,14,0))
 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_unstable, global_node_page_state(NR_UNSTABLE_NFS))
 419                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 420                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 421                 ctf_integer(unsigned long, background_thresh, background_thresh)
 422                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 423                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 424         )
 425 )
 426 #else
 427 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 428
 429         writeback_global_dirty_state,
 430
 431         TP_PROTO(unsigned long background_thresh,
 432                  unsigned long dirty_thresh
 433         ),
 434
 435         TP_ARGS(background_thresh,
 436                 dirty_thresh
 437         ),
 438
 439         TP_FIELDS(
 440                 ctf_integer(unsigned long, nr_dirty, global_page_state(NR_FILE_DIRTY))
 441                 ctf_integer(unsigned long, nr_writeback, global_page_state(NR_WRITEBACK))
 442                 ctf_integer(unsigned long, nr_unstable, global_page_state(NR_UNSTABLE_NFS))
 443                 ctf_integer(unsigned long, nr_dirtied, global_page_state(NR_DIRTIED))
 444                 ctf_integer(unsigned long, nr_written, global_page_state(NR_WRITTEN))
 445                 ctf_integer(unsigned long, background_thresh, background_thresh)
 446                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 447                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 448         )
 449 )
 450 #endif
 451 #endif
 452
 453 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 454
 455 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 456
 457 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 458
 459 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 460
 461         writeback_bdi_dirty_ratelimit,
 462
 463         TP_PROTO(struct bdi_writeback *wb,
 464                  unsigned long dirty_rate,
 465                  unsigned long task_ratelimit),
 466
 467         TP_ARGS(wb, dirty_rate, task_ratelimit),
 468
 469         TP_FIELDS(
 470                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 471                 ctf_integer(unsigned long, write_bw, KBps(wb->bdi->wb.write_bandwidth))
 472                 ctf_integer(unsigned long, avg_write_bw, KBps(wb->bdi->wb.avg_write_bandwidth))
 473                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 474                 ctf_integer(unsigned long, dirty_ratelimit, KBps(wb->bdi->wb.dirty_ratelimit))
 475                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 476                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 477                                         KBps(wb->bdi->wb.balanced_dirty_ratelimit))
 478         )
 479 )
 480
 481 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
 482
 483 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 484
 485         writeback_bdi_dirty_ratelimit,
 486
 487         TP_PROTO(struct backing_dev_info *bdi,
 488                  unsigned long dirty_rate,
 489                  unsigned long task_ratelimit),
 490
 491         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 492
 493         TP_FIELDS(
 494                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 495                 ctf_integer(unsigned long, write_bw, KBps(bdi->wb.write_bandwidth))
 496                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->wb.avg_write_bandwidth))
 497                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 498                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->wb.dirty_ratelimit))
 499                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 500                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 501                                         KBps(bdi->wb.balanced_dirty_ratelimit))
 502         )
 503 )
 504
 505 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 506
 507 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 508
 509         writeback_bdi_dirty_ratelimit,
 510
 511         TP_PROTO(struct backing_dev_info *bdi,
 512                  unsigned long dirty_rate,
 513                  unsigned long task_ratelimit),
 514
 515         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 516
 517         TP_FIELDS(
 518                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 519                 ctf_integer(unsigned long, write_bw, KBps(bdi->write_bandwidth))
 520                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->avg_write_bandwidth))
 521                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 522                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->dirty_ratelimit))
 523                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 524                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 525                                         KBps(bdi->balanced_dirty_ratelimit))
 526         )
 527 )
 528
 529 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 530
 531 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
 532
 533 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 534
 535         writeback_balance_dirty_pages,
 536
 537         TP_PROTO(struct bdi_writeback *wb,
 538                  unsigned long thresh,
 539                  unsigned long bg_thresh,
 540                  unsigned long dirty,
 541                  unsigned long bdi_thresh,
 542                  unsigned long bdi_dirty,
 543                  unsigned long dirty_ratelimit,
 544                  unsigned long task_ratelimit,
 545                  unsigned long dirtied,
 546                  unsigned long period,
 547                  long pause,
 548                  unsigned long start_time),
 549
 550         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 551                 dirty_ratelimit, task_ratelimit,
 552                 dirtied, period, pause, start_time
 553         ),
 554
 555         TP_FIELDS(
 556                 ctf_array_text(char, bdi, dev_name(wb->bdi->dev), 32)
 557                 ctf_integer(unsigned long, limit, global_dirty_limit)
 558                 ctf_integer(unsigned long, setpoint,
 559                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 560                 ctf_integer(unsigned long, dirty, dirty)
 561                 ctf_integer(unsigned long, bdi_setpoint,
 562                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 563                                 bdi_thresh / (thresh + 1))
 564                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 565                 ctf_integer(unsigned long, dirty_ratelimit,
 566                         KBps(dirty_ratelimit))
 567                 ctf_integer(unsigned long, task_ratelimit,
 568                         KBps(task_ratelimit))
 569                 ctf_integer(unsigned int, dirtied, dirtied)
 570                 ctf_integer(unsigned int, dirtied_pause,
 571                         current->nr_dirtied_pause)
 572                 ctf_integer(unsigned long, paused,
 573                         (jiffies - start_time) * 1000 / HZ)
 574                 ctf_integer(long, pause, pause * 1000 / HZ)
 575                 ctf_integer(unsigned long, period,
 576                         period * 1000 / HZ)
 577                 ctf_integer(long, think,
 578                         current->dirty_paused_when == 0 ? 0 :
 579                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 580         )
 581 )
 582
 583 #else /* #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 584
 585 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 586
 587         writeback_balance_dirty_pages,
 588
 589         TP_PROTO(struct backing_dev_info *bdi,
 590                  unsigned long thresh,
 591                  unsigned long bg_thresh,
 592                  unsigned long dirty,
 593                  unsigned long bdi_thresh,
 594                  unsigned long bdi_dirty,
 595                  unsigned long dirty_ratelimit,
 596                  unsigned long task_ratelimit,
 597                  unsigned long dirtied,
 598 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 599                  unsigned long period,
 600 #endif
 601                  long pause,
 602                  unsigned long start_time),
 603
 604         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 605                 dirty_ratelimit, task_ratelimit,
 606 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 607                 dirtied, period, pause, start_time
 608 #else
 609                 dirtied, pause, start_time
 610 #endif
 611         ),
 612
 613         TP_FIELDS(
 614                 ctf_array_text(char, bdi, dev_name(bdi->dev), 32)
 615                 ctf_integer(unsigned long, limit, global_dirty_limit)
 616                 ctf_integer(unsigned long, setpoint,
 617                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 618                 ctf_integer(unsigned long, dirty, dirty)
 619                 ctf_integer(unsigned long, bdi_setpoint,
 620                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 621                                 bdi_thresh / (thresh + 1))
 622                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 623                 ctf_integer(unsigned long, dirty_ratelimit,
 624                         KBps(dirty_ratelimit))
 625                 ctf_integer(unsigned long, task_ratelimit,
 626                         KBps(task_ratelimit))
 627                 ctf_integer(unsigned int, dirtied, dirtied)
 628                 ctf_integer(unsigned int, dirtied_pause,
 629                         current->nr_dirtied_pause)
 630                 ctf_integer(unsigned long, paused,
 631                         (jiffies - start_time) * 1000 / HZ)
 632                 ctf_integer(long, pause, pause * 1000 / HZ)
 633 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 634                 ctf_integer(unsigned long, period,
 635                         period * 1000 / HZ)
 636                 ctf_integer(long, think,
 637                         current->dirty_paused_when == 0 ? 0 :
 638                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 639 #endif
 640         )
 641 )
 642 #endif /* #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 643
 644 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
 645
 646 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
 647 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 648
 649         TP_PROTO(struct inode *inode),
 650         TP_ARGS(inode),
 651
 652         TP_FIELDS(
 653                 ctf_array_text(char, name,
 654                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 655                 ctf_integer(unsigned long, ino, inode->i_ino)
 656                 ctf_integer(unsigned long, state, inode->i_state)
 657                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 658         )
 659 )
 660 #endif
 661
 662 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 663
 664         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 665
 666         TP_ARGS(usec_timeout, usec_delayed),
 667
 668         TP_FIELDS(
 669                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 670                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 671         )
 672 )
 673
 674 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 675
 676         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 677
 678         TP_ARGS(usec_timeout, usec_delayed)
 679 )
 680
 681 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 682
 683         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 684
 685         TP_ARGS(usec_timeout, usec_delayed)
 686 )
 687
 688 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
 689 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 690
 691         TP_PROTO(struct inode *inode,
 692                  struct writeback_control *wbc,
 693                  unsigned long nr_to_write
 694         ),
 695
 696         TP_ARGS(inode, wbc, nr_to_write),
 697
 698         TP_FIELDS(
 699                 ctf_array_text(char, name,
 700                         dev_name(lttng_inode_to_bdi(inode)->dev), 32)
 701                 ctf_integer(unsigned long, ino, inode->i_ino)
 702                 ctf_integer(unsigned long, state, inode->i_state)
 703                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 704                 ctf_integer(unsigned long, writeback_index,
 705                         inode->i_mapping->writeback_index)
 706                 ctf_integer(long, nr_to_write, nr_to_write)
 707                 ctf_integer(unsigned long, wrote,
 708                         nr_to_write - wbc->nr_to_write)
 709         )
 710 )
 711
 712 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
 713 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 714         TP_PROTO(struct inode *inode,
 715                 struct writeback_control *wbc,
 716                 unsigned long nr_to_write),
 717         TP_ARGS(inode, wbc, nr_to_write)
 718 )
 719 #endif
 720
 721 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 722         TP_PROTO(struct inode *inode,
 723                  struct writeback_control *wbc,
 724                  unsigned long nr_to_write),
 725         TP_ARGS(inode, wbc, nr_to_write)
 726 )
 727 #endif
 728
 729 #endif /* LTTNG_TRACE_WRITEBACK_H */
 730
 731 /* This part must be outside protection */
 732 #include <lttng/define_trace.h>