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 <lttng/kernel-version.h>
  13
  14 #ifndef _TRACE_WRITEBACK_DEF_
  15 #define _TRACE_WRITEBACK_DEF_
  16
  17 /*
  18  * Use the GPL-exported bdi_dev_name introduced in kernel 5.7. Do not use
  19  * static inline bdi_dev_name in prior kernels because it uses the bdi_unknown_name
  20  * symbol which is not exported to GPL modules.
  21  */
  22 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,7,0))
  23 static inline const char *lttng_bdi_dev_name(struct backing_dev_info *bdi)
  24 {
  25         return bdi_dev_name(bdi);
  26 }
  27 #else
  28 static inline const char *lttng_bdi_dev_name(struct backing_dev_info *bdi)
  29 {
  30         if (!bdi || !bdi->dev)
  31                 return "(unknown)";
  32         return dev_name(bdi->dev);
  33 }
  34 #endif
  35
  36 /*
  37  * Vanilla kernels before 4.0 do not implement inode_to_bdi
  38  * RHEL kernels before 3.10.0-327.10.1 do not implement inode_to_bdi
  39  * RHEL kernel 3.10.0-327.10.1 has inode_to_bdi
  40  * RHEL kernel 3.10.0-327.13.1 includes a partial merge of upstream
  41  *  commit a212b105b07d75b48b1a166378282e8a77fbf53d which inlines
  42  *  inode_to_bdi but not sb_is_blkdev_sb making it unusable by modules.
  43  */
  44 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,0,0))
  45 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  46 {
  47         struct super_block *sb;
  48
  49         if (!inode)
  50                 return &noop_backing_dev_info;
  51
  52         sb = inode->i_sb;
  53
  54         if (strcmp(sb->s_type->name, "bdev") == 0)
  55                 return inode->i_mapping->backing_dev_info;
  56
  57         return sb->s_bdi;
  58 }
  59 #else
  60 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  61 {
  62         return inode_to_bdi(inode);
  63 }
  64 #endif /* #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,0,0)) */
  65
  66 #endif
  67
  68 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0))
  69 #define show_inode_state(state)                                 \
  70         __print_flags(state, "|",                               \
  71                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  72                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  73                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  74                 {I_NEW,                 "I_NEW"},               \
  75                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  76                 {I_FREEING,             "I_FREEING"},           \
  77                 {I_CLEAR,               "I_CLEAR"},             \
  78                 {I_SYNC,                "I_SYNC"},              \
  79                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  80                 {I_REFERENCED,          "I_REFERENCED"}         \
  81         )
  82 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
  83 #define show_inode_state(state)                                 \
  84         __print_flags(state, "|",                               \
  85                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  86                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  87                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  88                 {I_NEW,                 "I_NEW"},               \
  89                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  90                 {I_FREEING,             "I_FREEING"},           \
  91                 {I_CLEAR,               "I_CLEAR"},             \
  92                 {I_SYNC,                "I_SYNC"},              \
  93                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  94                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  95                 {I_REFERENCED,          "I_REFERENCED"}         \
  96         )
  97 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
  98 #define show_inode_state(state)                                 \
  99         __print_flags(state, "|",                               \
 100                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
 101                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
 102                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
 103                 {I_NEW,                 "I_NEW"},               \
 104                 {I_WILL_FREE,           "I_WILL_FREE"},         \
 105                 {I_FREEING,             "I_FREEING"},           \
 106                 {I_CLEAR,               "I_CLEAR"},             \
 107                 {I_SYNC,                "I_SYNC"},              \
 108                 {I_REFERENCED,          "I_REFERENCED"}         \
 109         )
 110 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
 111
 112 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
 113
 114 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 115         TP_PROTO(struct page *page, struct address_space *mapping),
 116         TP_ARGS(page, mapping),
 117         TP_FIELDS(
 118                 ctf_string(name, lttng_bdi_dev_name(mapping ? lttng_inode_to_bdi(mapping->host) : NULL))
 119                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 120                 ctf_integer(pgoff_t, index, page->index)
 121         )
 122 )
 123
 124 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 125         TP_PROTO(struct inode *inode, int flags),
 126         TP_ARGS(inode, flags),
 127         TP_FIELDS(
 128                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 129                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 130                 ctf_integer(unsigned long, ino, inode->i_ino)
 131                 ctf_integer(unsigned long, state, inode->i_state)
 132                 ctf_integer(unsigned long, flags, flags)
 133         )
 134 )
 135 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 136 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 137         TP_PROTO(struct inode *inode, int flags), \
 138         TP_ARGS(inode, flags))
 139 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 140 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 141 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
 142
 143 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 144         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 145         TP_ARGS(inode, wbc),
 146         TP_FIELDS(
 147                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 148                 ctf_integer(unsigned long, ino, inode->i_ino)
 149                 ctf_integer(int, sync_mode, wbc->sync_mode)
 150         )
 151 )
 152
 153 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 154 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 155         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 156         TP_ARGS(inode, wbc))
 157 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 158 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 159
 160 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0))
 161
 162 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 163         TP_PROTO(struct page *page, struct address_space *mapping),
 164         TP_ARGS(page, mapping),
 165         TP_FIELDS(
 166                 ctf_string(name, lttng_bdi_dev_name(mapping ? mapping->backing_dev_info : NULL))
 167                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 168                 ctf_integer(pgoff_t, index, page->index)
 169         )
 170 )
 171
 172 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 173         TP_PROTO(struct inode *inode, int flags),
 174         TP_ARGS(inode, flags),
 175         TP_FIELDS(
 176                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 177                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 178                 ctf_integer(unsigned long, ino, inode->i_ino)
 179                 ctf_integer(unsigned long, flags, flags)
 180         )
 181 )
 182 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 183 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 184         TP_PROTO(struct inode *inode, int flags), \
 185         TP_ARGS(inode, flags))
 186 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 187 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 188
 189 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 190         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 191         TP_ARGS(inode, wbc),
 192         TP_FIELDS(
 193                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 194                 ctf_integer(unsigned long, ino, inode->i_ino)
 195                 ctf_integer(int, sync_mode, wbc->sync_mode)
 196         )
 197 )
 198
 199 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 200 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 201         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 202         TP_ARGS(inode, wbc))
 203 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 204 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 205
 206 #endif /* (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0)) */
 207
 208 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 209
 210 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 211         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 212         TP_ARGS(wb, work),
 213         TP_FIELDS(
 214                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 215         )
 216 )
 217
 218 #else
 219
 220 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 221         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 222         TP_ARGS(bdi, work),
 223         TP_FIELDS(
 224                 ctf_string(name, lttng_bdi_dev_name(bdi))
 225         )
 226 )
 227
 228 #endif /* #else if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 229
 230 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 231
 232 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 233 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 234         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 235         TP_ARGS(wb, work))
 236
 237 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 238
 239 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 240 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 241         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 242         TP_ARGS(bdi, work))
 243
 244 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 245
 246 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
 247 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
 248 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 249 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 250 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
 251 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
 252 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 253 #endif
 254
 255 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 256         TP_PROTO(long pages_written),
 257         TP_ARGS(pages_written),
 258         TP_FIELDS(
 259                 ctf_integer(long, pages, pages_written)
 260         )
 261 )
 262
 263 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 264
 265 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 266         TP_PROTO(struct bdi_writeback *wb),
 267         TP_ARGS(wb),
 268         TP_FIELDS(
 269                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 270         )
 271 )
 272
 273 #undef DEFINE_WRITEBACK_EVENT
 274 #define DEFINE_WRITEBACK_EVENT(name) \
 275 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 276         TP_PROTO(struct bdi_writeback *wb), \
 277         TP_ARGS(wb))
 278
 279 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 280 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 281         TP_PROTO(struct bdi_writeback *wb), \
 282         TP_ARGS(wb))
 283
 284 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register,
 285         TP_PROTO(struct backing_dev_info *bdi),
 286         TP_ARGS(bdi),
 287         TP_FIELDS(
 288                 ctf_string(name, lttng_bdi_dev_name(bdi))
 289         )
 290 )
 291
 292 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 293
 294 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 295         TP_PROTO(struct backing_dev_info *bdi),
 296         TP_ARGS(bdi),
 297         TP_FIELDS(
 298                 ctf_string(name, lttng_bdi_dev_name(bdi))
 299         )
 300 )
 301
 302 #undef DEFINE_WRITEBACK_EVENT
 303 #define DEFINE_WRITEBACK_EVENT(name) \
 304 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 305         TP_PROTO(struct backing_dev_info *bdi), \
 306         TP_ARGS(bdi))
 307
 308 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 309 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 310         TP_PROTO(struct backing_dev_info *bdi), \
 311         TP_ARGS(bdi))
 312
 313 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
 314
 315 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 316
 317 DEFINE_WRITEBACK_EVENT(writeback_nowork)
 318 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
 319 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
 320 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
 321 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 322 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 323 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 324 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
 325 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
 326 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
 327
 328 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 329
 330         writeback_balance_dirty_written,
 331
 332         TP_PROTO(struct backing_dev_info *bdi, int written),
 333
 334         TP_ARGS(bdi, written),
 335
 336         TP_FIELDS(
 337                 ctf_string(name, lttng_bdi_dev_name(bdi))
 338                 ctf_integer(int, written, written)
 339         )
 340 )
 341 #endif
 342
 343 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 344         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 345         TP_ARGS(wbc, bdi),
 346         TP_FIELDS(
 347                 ctf_string(name, lttng_bdi_dev_name(bdi))
 348                 ctf_integer(long, nr_to_write, wbc->nr_to_write)
 349                 ctf_integer(long, pages_skipped, wbc->pages_skipped)
 350                 ctf_integer(int, sync_mode, wbc->sync_mode)
 351                 ctf_integer(int, for_kupdate, wbc->for_kupdate)
 352                 ctf_integer(int, for_background, wbc->for_background)
 353                 ctf_integer(int, for_reclaim, wbc->for_reclaim)
 354                 ctf_integer(int, range_cyclic, wbc->range_cyclic)
 355 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 356                 ctf_integer(int, more_io, wbc->more_io)
 357                 ctf_integer(unsigned long, older_than_this,
 358                         wbc->older_than_this ? *wbc->older_than_this : 0)
 359 #endif
 360                 ctf_integer(long, range_start, (long) wbc->range_start)
 361                 ctf_integer(long, range_end, (long) wbc->range_end)
 362         )
 363 )
 364
 365 #undef DEFINE_WBC_EVENT
 366 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
 367 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 368         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 369         TP_ARGS(wbc, bdi))
 370 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 371 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
 372 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
 373 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
 374 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
 375 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
 376 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 377 #endif
 378 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 379
 380 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0) || \
 381         LTTNG_KERNEL_RANGE(5,8,6, 5,9,0) || \
 382         LTTNG_KERNEL_RANGE(5,4,62, 5,5,0) || \
 383         LTTNG_KERNEL_RANGE(4,19,143, 4,20,0) || \
 384         LTTNG_KERNEL_RANGE(4,14,196, 4,15,0) || \
 385         LTTNG_KERNEL_RANGE(4,9,235, 4,10,0) || \
 386         LTTNG_KERNEL_RANGE(4,4,235, 4,5,0) || \
 387         LTTNG_UBUNTU_KERNEL_RANGE(4,15,18,119, 4,16,0,0))
 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_string(name, lttng_bdi_dev_name(wb->bdi))
 396                 ctf_integer(unsigned long, older, dirtied_before)
 397                 ctf_integer(int, moved, moved)
 398         )
 399 )
 400 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(name, lttng_bdi_dev_name(wb->bdi))
 408                 ctf_integer(int, moved, moved)
 409         )
 410 )
 411 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(name, lttng_bdi_dev_name(wb->bdi))
 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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0))
 504
 505 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 506
 507 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(bdi, lttng_bdi_dev_name(wb->bdi))
 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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(bdi, lttng_bdi_dev_name(bdi))
 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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(bdi, lttng_bdi_dev_name(bdi))
 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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
 580
 581 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(bdi, lttng_bdi_dev_name(wb->bdi))
 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 LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(bdi, lttng_bdi_dev_name(bdi))
 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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 693
 694 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0)) */
 695
 696 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 704                 ctf_integer(unsigned long, ino, inode->i_ino)
 705                 ctf_integer(unsigned long, state, inode->i_state)
 706                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 707         )
 708 )
 709 #endif
 710
 711 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 712
 713         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 714
 715         TP_ARGS(usec_timeout, usec_delayed),
 716
 717         TP_FIELDS(
 718                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 719                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 720         )
 721 )
 722
 723 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 724
 725         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 726
 727         TP_ARGS(usec_timeout, usec_delayed)
 728 )
 729
 730 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 731
 732         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 733
 734         TP_ARGS(usec_timeout, usec_delayed)
 735 )
 736
 737 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 738 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 739
 740         TP_PROTO(struct inode *inode,
 741                  struct writeback_control *wbc,
 742                  unsigned long nr_to_write
 743         ),
 744
 745         TP_ARGS(inode, wbc, nr_to_write),
 746
 747         TP_FIELDS(
 748                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 749                 ctf_integer(unsigned long, ino, inode->i_ino)
 750                 ctf_integer(unsigned long, state, inode->i_state)
 751                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 752                 ctf_integer(unsigned long, writeback_index,
 753                         inode->i_mapping->writeback_index)
 754                 ctf_integer(long, nr_to_write, nr_to_write)
 755                 ctf_integer(unsigned long, wrote,
 756                         nr_to_write - wbc->nr_to_write)
 757         )
 758 )
 759
 760 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,5,0))
 761 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 762         TP_PROTO(struct inode *inode,
 763                 struct writeback_control *wbc,
 764                 unsigned long nr_to_write),
 765         TP_ARGS(inode, wbc, nr_to_write)
 766 )
 767 #endif
 768
 769 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 770         TP_PROTO(struct inode *inode,
 771                  struct writeback_control *wbc,
 772                  unsigned long nr_to_write),
 773         TP_ARGS(inode, wbc, nr_to_write)
 774 )
 775 #endif
 776
 777 #endif /* LTTNG_TRACE_WRITEBACK_H */
 778
 779 /* This part must be outside protection */
 780 #include <lttng/define_trace.h>