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 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0) || \
  18         LTTNG_KERNEL_RANGE(5,5,3, 5,6,0) ||                     \
  19         LTTNG_KERNEL_RANGE(5,4,19, 5,5,0))
  20 static inline const char *lttng_bdi_dev_name(struct backing_dev_info *bdi)
  21 {
  22         return bdi_dev_name(bdi);
  23 }
  24 #else
  25 static inline const char *lttng_bdi_dev_name(struct backing_dev_info *bdi)
  26 {
  27         if (!bdi || !bdi->dev)
  28                 return "(unknown)";
  29         return dev_name(bdi->dev);
  30 }
  31 #endif
  32
  33 /*
  34  * Vanilla kernels before 4.0 do not implement inode_to_bdi
  35  * RHEL kernels before 3.10.0-327.10.1 do not implement inode_to_bdi
  36  * RHEL kernel 3.10.0-327.10.1 has inode_to_bdi
  37  * RHEL kernel 3.10.0-327.13.1 includes a partial merge of upstream
  38  *  commit a212b105b07d75b48b1a166378282e8a77fbf53d which inlines
  39  *  inode_to_bdi but not sb_is_blkdev_sb making it unusable by modules.
  40  */
  41 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,0,0))
  42 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  43 {
  44         struct super_block *sb;
  45
  46         if (!inode)
  47                 return &noop_backing_dev_info;
  48
  49         sb = inode->i_sb;
  50
  51         if (strcmp(sb->s_type->name, "bdev") == 0)
  52                 return inode->i_mapping->backing_dev_info;
  53
  54         return sb->s_bdi;
  55 }
  56 #else
  57 static inline struct backing_dev_info *lttng_inode_to_bdi(struct inode *inode)
  58 {
  59         return inode_to_bdi(inode);
  60 }
  61 #endif /* #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,0,0)) */
  62
  63 #endif
  64
  65 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0))
  66 #define show_inode_state(state)                                 \
  67         __print_flags(state, "|",                               \
  68                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  69                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  70                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  71                 {I_NEW,                 "I_NEW"},               \
  72                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  73                 {I_FREEING,             "I_FREEING"},           \
  74                 {I_CLEAR,               "I_CLEAR"},             \
  75                 {I_SYNC,                "I_SYNC"},              \
  76                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  77                 {I_REFERENCED,          "I_REFERENCED"}         \
  78         )
  79 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
  80 #define show_inode_state(state)                                 \
  81         __print_flags(state, "|",                               \
  82                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  83                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  84                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  85                 {I_NEW,                 "I_NEW"},               \
  86                 {I_WILL_FREE,           "I_WILL_FREE"},         \
  87                 {I_FREEING,             "I_FREEING"},           \
  88                 {I_CLEAR,               "I_CLEAR"},             \
  89                 {I_SYNC,                "I_SYNC"},              \
  90                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
  91                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
  92                 {I_REFERENCED,          "I_REFERENCED"}         \
  93         )
  94 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
  95 #define show_inode_state(state)                                 \
  96         __print_flags(state, "|",                               \
  97                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  98                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  99                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
 100                 {I_NEW,                 "I_NEW"},               \
 101                 {I_WILL_FREE,           "I_WILL_FREE"},         \
 102                 {I_FREEING,             "I_FREEING"},           \
 103                 {I_CLEAR,               "I_CLEAR"},             \
 104                 {I_SYNC,                "I_SYNC"},              \
 105                 {I_REFERENCED,          "I_REFERENCED"}         \
 106         )
 107 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
 108
 109 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
 110
 111 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 112         TP_PROTO(struct page *page, struct address_space *mapping),
 113         TP_ARGS(page, mapping),
 114         TP_FIELDS(
 115                 ctf_string(name, lttng_bdi_dev_name(mapping ? lttng_inode_to_bdi(mapping->host) : NULL))
 116                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 117                 ctf_integer(pgoff_t, index, page->index)
 118         )
 119 )
 120
 121 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 122         TP_PROTO(struct inode *inode, int flags),
 123         TP_ARGS(inode, flags),
 124         TP_FIELDS(
 125                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 126                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 127                 ctf_integer(unsigned long, ino, inode->i_ino)
 128                 ctf_integer(unsigned long, state, inode->i_state)
 129                 ctf_integer(unsigned long, flags, flags)
 130         )
 131 )
 132 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 133 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 134         TP_PROTO(struct inode *inode, int flags), \
 135         TP_ARGS(inode, flags))
 136 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 137 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 138 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
 139
 140 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 141         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 142         TP_ARGS(inode, wbc),
 143         TP_FIELDS(
 144                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 145                 ctf_integer(unsigned long, ino, inode->i_ino)
 146                 ctf_integer(int, sync_mode, wbc->sync_mode)
 147         )
 148 )
 149
 150 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 151 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 152         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 153         TP_ARGS(inode, wbc))
 154 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 155 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 156
 157 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0))
 158
 159 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 160         TP_PROTO(struct page *page, struct address_space *mapping),
 161         TP_ARGS(page, mapping),
 162         TP_FIELDS(
 163                 ctf_string(name, lttng_bdi_dev_name(mapping ? mapping->backing_dev_info : NULL))
 164                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 165                 ctf_integer(pgoff_t, index, page->index)
 166         )
 167 )
 168
 169 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 170         TP_PROTO(struct inode *inode, int flags),
 171         TP_ARGS(inode, flags),
 172         TP_FIELDS(
 173                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 174                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 175                 ctf_integer(unsigned long, ino, inode->i_ino)
 176                 ctf_integer(unsigned long, flags, flags)
 177         )
 178 )
 179 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 180 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 181         TP_PROTO(struct inode *inode, int flags), \
 182         TP_ARGS(inode, flags))
 183 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 184 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 185
 186 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 187         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 188         TP_ARGS(inode, wbc),
 189         TP_FIELDS(
 190                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 191                 ctf_integer(unsigned long, ino, inode->i_ino)
 192                 ctf_integer(int, sync_mode, wbc->sync_mode)
 193         )
 194 )
 195
 196 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 197 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 198         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 199         TP_ARGS(inode, wbc))
 200 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 201 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 202
 203 #endif /* (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0)) */
 204
 205 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 206
 207 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 208         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 209         TP_ARGS(wb, work),
 210         TP_FIELDS(
 211                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 212         )
 213 )
 214
 215 #else
 216
 217 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 218         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 219         TP_ARGS(bdi, work),
 220         TP_FIELDS(
 221                 ctf_string(name, lttng_bdi_dev_name(bdi))
 222         )
 223 )
 224
 225 #endif /* #else if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 226
 227 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 bdi_writeback *wb, struct wb_writeback_work *work), \
 232         TP_ARGS(wb, work))
 233
 234 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 backing_dev_info *bdi, struct wb_writeback_work *work), \
 239         TP_ARGS(bdi, work))
 240
 241 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 242
 243 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
 244 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
 245 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 246 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 247 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
 248 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
 249 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 250 #endif
 251
 252 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 253         TP_PROTO(long pages_written),
 254         TP_ARGS(pages_written),
 255         TP_FIELDS(
 256                 ctf_integer(long, pages, pages_written)
 257         )
 258 )
 259
 260 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 261
 262 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 263         TP_PROTO(struct bdi_writeback *wb),
 264         TP_ARGS(wb),
 265         TP_FIELDS(
 266                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 267         )
 268 )
 269
 270 #undef DEFINE_WRITEBACK_EVENT
 271 #define DEFINE_WRITEBACK_EVENT(name) \
 272 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 273         TP_PROTO(struct bdi_writeback *wb), \
 274         TP_ARGS(wb))
 275
 276 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 277 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 278         TP_PROTO(struct bdi_writeback *wb), \
 279         TP_ARGS(wb))
 280
 281 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register,
 282         TP_PROTO(struct backing_dev_info *bdi),
 283         TP_ARGS(bdi),
 284         TP_FIELDS(
 285                 ctf_string(name, lttng_bdi_dev_name(bdi))
 286         )
 287 )
 288
 289 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 290
 291 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 292         TP_PROTO(struct backing_dev_info *bdi),
 293         TP_ARGS(bdi),
 294         TP_FIELDS(
 295                 ctf_string(name, lttng_bdi_dev_name(bdi))
 296         )
 297 )
 298
 299 #undef DEFINE_WRITEBACK_EVENT
 300 #define DEFINE_WRITEBACK_EVENT(name) \
 301 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 302         TP_PROTO(struct backing_dev_info *bdi), \
 303         TP_ARGS(bdi))
 304
 305 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 306 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 307         TP_PROTO(struct backing_dev_info *bdi), \
 308         TP_ARGS(bdi))
 309
 310 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
 311
 312 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 313
 314 DEFINE_WRITEBACK_EVENT(writeback_nowork)
 315 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
 316 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
 317 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
 318 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 319 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 320 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 321 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
 322 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
 323 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
 324
 325 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 326
 327         writeback_balance_dirty_written,
 328
 329         TP_PROTO(struct backing_dev_info *bdi, int written),
 330
 331         TP_ARGS(bdi, written),
 332
 333         TP_FIELDS(
 334                 ctf_string(name, lttng_bdi_dev_name(bdi))
 335                 ctf_integer(int, written, written)
 336         )
 337 )
 338 #endif
 339
 340 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 341         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 342         TP_ARGS(wbc, bdi),
 343         TP_FIELDS(
 344                 ctf_string(name, lttng_bdi_dev_name(bdi))
 345                 ctf_integer(long, nr_to_write, wbc->nr_to_write)
 346                 ctf_integer(long, pages_skipped, wbc->pages_skipped)
 347                 ctf_integer(int, sync_mode, wbc->sync_mode)
 348                 ctf_integer(int, for_kupdate, wbc->for_kupdate)
 349                 ctf_integer(int, for_background, wbc->for_background)
 350                 ctf_integer(int, for_reclaim, wbc->for_reclaim)
 351                 ctf_integer(int, range_cyclic, wbc->range_cyclic)
 352 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 353                 ctf_integer(int, more_io, wbc->more_io)
 354                 ctf_integer(unsigned long, older_than_this,
 355                         wbc->older_than_this ? *wbc->older_than_this : 0)
 356 #endif
 357                 ctf_integer(long, range_start, (long) wbc->range_start)
 358                 ctf_integer(long, range_end, (long) wbc->range_end)
 359         )
 360 )
 361
 362 #undef DEFINE_WBC_EVENT
 363 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
 364 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 365         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 366         TP_ARGS(wbc, bdi))
 367 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 368 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
 369 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
 370 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
 371 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
 372 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
 373 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 374 #endif
 375 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 376
 377 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0) || \
 378         LTTNG_KERNEL_RANGE(5,8,6, 5,9,0) || \
 379         LTTNG_KERNEL_RANGE(5,4,62, 5,5,0) || \
 380         LTTNG_KERNEL_RANGE(4,19,143, 4,20,0) || \
 381         LTTNG_KERNEL_RANGE(4,14,196, 4,15,0) || \
 382         LTTNG_KERNEL_RANGE(4,9,235, 4,10,0) || \
 383         LTTNG_KERNEL_RANGE(4,4,235, 4,5,0) || \
 384         LTTNG_UBUNTU_KERNEL_RANGE(4,15,18,119, 4,16,0,0))
 385 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 386         TP_PROTO(struct bdi_writeback *wb,
 387                  struct wb_writeback_work *work,
 388                  unsigned long dirtied_before,
 389                  int moved),
 390         TP_ARGS(wb, work, dirtied_before, moved),
 391         TP_FIELDS(
 392                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 393                 ctf_integer(unsigned long, older, dirtied_before)
 394                 ctf_integer(int, moved, moved)
 395         )
 396 )
 397 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0))
 398 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 399         TP_PROTO(struct bdi_writeback *wb,
 400                  struct wb_writeback_work *work,
 401                  int moved),
 402         TP_ARGS(wb, work, moved),
 403         TP_FIELDS(
 404                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 405                 ctf_integer(int, moved, moved)
 406         )
 407 )
 408 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 409 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 410         TP_PROTO(struct bdi_writeback *wb,
 411                  unsigned long *older_than_this,
 412                  int moved),
 413         TP_ARGS(wb, older_than_this, moved),
 414         TP_FIELDS(
 415                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 416                 ctf_integer(unsigned long, older,
 417                         older_than_this ? *older_than_this : 0)
 418                 ctf_integer(long, age,
 419                         older_than_this ?
 420                                 (jiffies - *older_than_this) * 1000 / HZ
 421                                 : -1)
 422                 ctf_integer(int, moved, moved)
 423         )
 424 )
 425 #endif
 426
 427 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,8,0))
 428 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 429
 430         writeback_global_dirty_state,
 431
 432         TP_PROTO(unsigned long background_thresh,
 433                  unsigned long dirty_thresh
 434         ),
 435
 436         TP_ARGS(background_thresh,
 437                 dirty_thresh
 438         ),
 439
 440         TP_FIELDS(
 441                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 442                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 443                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 444                 ctf_integer(unsigned long, nr_written, global_node_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 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,14,0))
 451 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 452
 453         writeback_global_dirty_state,
 454
 455         TP_PROTO(unsigned long background_thresh,
 456                  unsigned long dirty_thresh
 457         ),
 458
 459         TP_ARGS(background_thresh,
 460                 dirty_thresh
 461         ),
 462
 463         TP_FIELDS(
 464                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 465                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 466                 ctf_integer(unsigned long, nr_unstable, global_node_page_state(NR_UNSTABLE_NFS))
 467                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 468                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 469                 ctf_integer(unsigned long, background_thresh, background_thresh)
 470                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 471                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 472         )
 473 )
 474 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 475 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 476
 477         writeback_global_dirty_state,
 478
 479         TP_PROTO(unsigned long background_thresh,
 480                  unsigned long dirty_thresh
 481         ),
 482
 483         TP_ARGS(background_thresh,
 484                 dirty_thresh
 485         ),
 486
 487         TP_FIELDS(
 488                 ctf_integer(unsigned long, nr_dirty, global_page_state(NR_FILE_DIRTY))
 489                 ctf_integer(unsigned long, nr_writeback, global_page_state(NR_WRITEBACK))
 490                 ctf_integer(unsigned long, nr_unstable, global_page_state(NR_UNSTABLE_NFS))
 491                 ctf_integer(unsigned long, nr_dirtied, global_page_state(NR_DIRTIED))
 492                 ctf_integer(unsigned long, nr_written, global_page_state(NR_WRITTEN))
 493                 ctf_integer(unsigned long, background_thresh, background_thresh)
 494                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 495                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 496         )
 497 )
 498 #endif
 499
 500 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0))
 501
 502 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 503
 504 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 505
 506 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 507
 508         writeback_bdi_dirty_ratelimit,
 509
 510         TP_PROTO(struct bdi_writeback *wb,
 511                  unsigned long dirty_rate,
 512                  unsigned long task_ratelimit),
 513
 514         TP_ARGS(wb, dirty_rate, task_ratelimit),
 515
 516         TP_FIELDS(
 517                 ctf_string(bdi, lttng_bdi_dev_name(wb->bdi))
 518                 ctf_integer(unsigned long, write_bw, KBps(wb->bdi->wb.write_bandwidth))
 519                 ctf_integer(unsigned long, avg_write_bw, KBps(wb->bdi->wb.avg_write_bandwidth))
 520                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 521                 ctf_integer(unsigned long, dirty_ratelimit, KBps(wb->bdi->wb.dirty_ratelimit))
 522                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 523                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 524                                         KBps(wb->bdi->wb.balanced_dirty_ratelimit))
 525         )
 526 )
 527
 528 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0))
 529
 530 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 531
 532         writeback_bdi_dirty_ratelimit,
 533
 534         TP_PROTO(struct backing_dev_info *bdi,
 535                  unsigned long dirty_rate,
 536                  unsigned long task_ratelimit),
 537
 538         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 539
 540         TP_FIELDS(
 541                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 542                 ctf_integer(unsigned long, write_bw, KBps(bdi->wb.write_bandwidth))
 543                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->wb.avg_write_bandwidth))
 544                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 545                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->wb.dirty_ratelimit))
 546                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 547                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 548                                         KBps(bdi->wb.balanced_dirty_ratelimit))
 549         )
 550 )
 551
 552 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
 553
 554 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 555
 556         writeback_bdi_dirty_ratelimit,
 557
 558         TP_PROTO(struct backing_dev_info *bdi,
 559                  unsigned long dirty_rate,
 560                  unsigned long task_ratelimit),
 561
 562         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 563
 564         TP_FIELDS(
 565                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 566                 ctf_integer(unsigned long, write_bw, KBps(bdi->write_bandwidth))
 567                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->avg_write_bandwidth))
 568                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 569                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->dirty_ratelimit))
 570                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 571                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 572                                         KBps(bdi->balanced_dirty_ratelimit))
 573         )
 574 )
 575
 576 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
 577
 578 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 579
 580 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 581
 582         writeback_balance_dirty_pages,
 583
 584         TP_PROTO(struct bdi_writeback *wb,
 585                  unsigned long thresh,
 586                  unsigned long bg_thresh,
 587                  unsigned long dirty,
 588                  unsigned long bdi_thresh,
 589                  unsigned long bdi_dirty,
 590                  unsigned long dirty_ratelimit,
 591                  unsigned long task_ratelimit,
 592                  unsigned long dirtied,
 593                  unsigned long period,
 594                  long pause,
 595                  unsigned long start_time),
 596
 597         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 598                 dirty_ratelimit, task_ratelimit,
 599                 dirtied, period, pause, start_time
 600         ),
 601
 602         TP_FIELDS(
 603                 ctf_string(bdi, lttng_bdi_dev_name(wb->bdi))
 604                 ctf_integer(unsigned long, limit, global_dirty_limit)
 605                 ctf_integer(unsigned long, setpoint,
 606                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 607                 ctf_integer(unsigned long, dirty, dirty)
 608                 ctf_integer(unsigned long, bdi_setpoint,
 609                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 610                                 bdi_thresh / (thresh + 1))
 611                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 612                 ctf_integer(unsigned long, dirty_ratelimit,
 613                         KBps(dirty_ratelimit))
 614                 ctf_integer(unsigned long, task_ratelimit,
 615                         KBps(task_ratelimit))
 616                 ctf_integer(unsigned int, dirtied, dirtied)
 617                 ctf_integer(unsigned int, dirtied_pause,
 618                         current->nr_dirtied_pause)
 619                 ctf_integer(unsigned long, paused,
 620                         (jiffies - start_time) * 1000 / HZ)
 621                 ctf_integer(long, pause, pause * 1000 / HZ)
 622                 ctf_integer(unsigned long, period,
 623                         period * 1000 / HZ)
 624                 ctf_integer(long, think,
 625                         current->dirty_paused_when == 0 ? 0 :
 626                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 627         )
 628 )
 629
 630 #else /* #if LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 631
 632 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 633
 634         writeback_balance_dirty_pages,
 635
 636         TP_PROTO(struct backing_dev_info *bdi,
 637                  unsigned long thresh,
 638                  unsigned long bg_thresh,
 639                  unsigned long dirty,
 640                  unsigned long bdi_thresh,
 641                  unsigned long bdi_dirty,
 642                  unsigned long dirty_ratelimit,
 643                  unsigned long task_ratelimit,
 644                  unsigned long dirtied,
 645 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 646                  unsigned long period,
 647 #endif
 648                  long pause,
 649                  unsigned long start_time),
 650
 651         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 652                 dirty_ratelimit, task_ratelimit,
 653 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 654                 dirtied, period, pause, start_time
 655 #else
 656                 dirtied, pause, start_time
 657 #endif
 658         ),
 659
 660         TP_FIELDS(
 661                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 662                 ctf_integer(unsigned long, limit, global_dirty_limit)
 663                 ctf_integer(unsigned long, setpoint,
 664                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 665                 ctf_integer(unsigned long, dirty, dirty)
 666                 ctf_integer(unsigned long, bdi_setpoint,
 667                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 668                                 bdi_thresh / (thresh + 1))
 669                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 670                 ctf_integer(unsigned long, dirty_ratelimit,
 671                         KBps(dirty_ratelimit))
 672                 ctf_integer(unsigned long, task_ratelimit,
 673                         KBps(task_ratelimit))
 674                 ctf_integer(unsigned int, dirtied, dirtied)
 675                 ctf_integer(unsigned int, dirtied_pause,
 676                         current->nr_dirtied_pause)
 677                 ctf_integer(unsigned long, paused,
 678                         (jiffies - start_time) * 1000 / HZ)
 679                 ctf_integer(long, pause, pause * 1000 / HZ)
 680 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 681                 ctf_integer(unsigned long, period,
 682                         period * 1000 / HZ)
 683                 ctf_integer(long, think,
 684                         current->dirty_paused_when == 0 ? 0 :
 685                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 686 #endif
 687         )
 688 )
 689 #endif /* #else #if LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 690
 691 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0)) */
 692
 693 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,5,0))
 694 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 695
 696         TP_PROTO(struct inode *inode),
 697         TP_ARGS(inode),
 698
 699         TP_FIELDS(
 700                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 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         )
 705 )
 706 #endif
 707
 708 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 709
 710         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 711
 712         TP_ARGS(usec_timeout, usec_delayed),
 713
 714         TP_FIELDS(
 715                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 716                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 717         )
 718 )
 719
 720 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 721
 722         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 723
 724         TP_ARGS(usec_timeout, usec_delayed)
 725 )
 726
 727 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 728
 729         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 730
 731         TP_ARGS(usec_timeout, usec_delayed)
 732 )
 733
 734 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 735 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 736
 737         TP_PROTO(struct inode *inode,
 738                  struct writeback_control *wbc,
 739                  unsigned long nr_to_write
 740         ),
 741
 742         TP_ARGS(inode, wbc, nr_to_write),
 743
 744         TP_FIELDS(
 745                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 746                 ctf_integer(unsigned long, ino, inode->i_ino)
 747                 ctf_integer(unsigned long, state, inode->i_state)
 748                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 749                 ctf_integer(unsigned long, writeback_index,
 750                         inode->i_mapping->writeback_index)
 751                 ctf_integer(long, nr_to_write, nr_to_write)
 752                 ctf_integer(unsigned long, wrote,
 753                         nr_to_write - wbc->nr_to_write)
 754         )
 755 )
 756
 757 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,5,0))
 758 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 759         TP_PROTO(struct inode *inode,
 760                 struct writeback_control *wbc,
 761                 unsigned long nr_to_write),
 762         TP_ARGS(inode, wbc, nr_to_write)
 763 )
 764 #endif
 765
 766 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 767         TP_PROTO(struct inode *inode,
 768                  struct writeback_control *wbc,
 769                  unsigned long nr_to_write),
 770         TP_ARGS(inode, wbc, nr_to_write)
 771 )
 772 #endif
 773
 774 #endif /* LTTNG_TRACE_WRITEBACK_H */
 775
 776 /* This part must be outside protection */
 777 #include <lttng/define_trace.h>