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 /*
  69  * Keep this macro around to track changes in the valid values for `state`.
  70  * Eventually, we will have a enum to describe that field. If the macro is
  71  * changed by an upstream kernel, the fact that we have a redefinition here
  72  * will generate a compiler warning.
  73  */
  74 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0) || \
  75         LTTNG_KERNEL_RANGE(4,14,218, 4,15,0) ||                 \
  76         LTTNG_KERNEL_RANGE(4,19,172, 4,20,0) ||                 \
  77         LTTNG_KERNEL_RANGE(5,4,94, 5,5,0) ||                    \
  78         LTTNG_UBUNTU_KERNEL_RANGE(4,15,18,141, 4,16,0,0) ||     \
  79         LTTNG_RHEL_KERNEL_RANGE(4,18,0,240,0,0, 4,19,0,0,0,0))
  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_REFERENCED,          "I_REFERENCED"}         \
  92         )
  93 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
  94 #define show_inode_state(state)                                 \
  95         __print_flags(state, "|",                               \
  96                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
  97                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
  98                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
  99                 {I_NEW,                 "I_NEW"},               \
 100                 {I_WILL_FREE,           "I_WILL_FREE"},         \
 101                 {I_FREEING,             "I_FREEING"},           \
 102                 {I_CLEAR,               "I_CLEAR"},             \
 103                 {I_SYNC,                "I_SYNC"},              \
 104                 {I_DIRTY_TIME,          "I_DIRTY_TIME"},        \
 105                 {I_DIRTY_TIME_EXPIRED,  "I_DIRTY_TIME_EXPIRED"}, \
 106                 {I_REFERENCED,          "I_REFERENCED"}         \
 107         )
 108 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
 109 #define show_inode_state(state)                                 \
 110         __print_flags(state, "|",                               \
 111                 {I_DIRTY_SYNC,          "I_DIRTY_SYNC"},        \
 112                 {I_DIRTY_DATASYNC,      "I_DIRTY_DATASYNC"},    \
 113                 {I_DIRTY_PAGES,         "I_DIRTY_PAGES"},       \
 114                 {I_NEW,                 "I_NEW"},               \
 115                 {I_WILL_FREE,           "I_WILL_FREE"},         \
 116                 {I_FREEING,             "I_FREEING"},           \
 117                 {I_CLEAR,               "I_CLEAR"},             \
 118                 {I_SYNC,                "I_SYNC"},              \
 119                 {I_REFERENCED,          "I_REFERENCED"}         \
 120         )
 121 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0)) */
 122
 123 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,0,0))
 124
 125 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 126         TP_PROTO(struct page *page, struct address_space *mapping),
 127         TP_ARGS(page, mapping),
 128         TP_FIELDS(
 129                 ctf_string(name, lttng_bdi_dev_name(mapping ? lttng_inode_to_bdi(mapping->host) : NULL))
 130                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 131                 ctf_integer(pgoff_t, index, page->index)
 132         )
 133 )
 134
 135 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 136         TP_PROTO(struct inode *inode, int flags),
 137         TP_ARGS(inode, flags),
 138         TP_FIELDS(
 139                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 140                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 141                 ctf_integer(unsigned long, ino, inode->i_ino)
 142                 ctf_integer(unsigned long, state, inode->i_state)
 143                 ctf_integer(unsigned long, flags, flags)
 144         )
 145 )
 146 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 147 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 148         TP_PROTO(struct inode *inode, int flags), \
 149         TP_ARGS(inode, flags))
 150 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 151 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 152 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
 153
 154 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 155         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 156         TP_ARGS(inode, wbc),
 157         TP_FIELDS(
 158                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 159                 ctf_integer(unsigned long, ino, inode->i_ino)
 160                 ctf_integer(int, sync_mode, wbc->sync_mode)
 161         )
 162 )
 163
 164 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 165 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 166         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 167         TP_ARGS(inode, wbc))
 168 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 169 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 170
 171 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0))
 172
 173 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
 174         TP_PROTO(struct page *page, struct address_space *mapping),
 175         TP_ARGS(page, mapping),
 176         TP_FIELDS(
 177                 ctf_string(name, lttng_bdi_dev_name(mapping ? mapping->backing_dev_info : NULL))
 178                 ctf_integer(unsigned long, ino, mapping ? mapping->host->i_ino : 0)
 179                 ctf_integer(pgoff_t, index, page->index)
 180         )
 181 )
 182
 183 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
 184         TP_PROTO(struct inode *inode, int flags),
 185         TP_ARGS(inode, flags),
 186         TP_FIELDS(
 187                 /* may be called for files on pseudo FSes w/ unregistered bdi */
 188                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 189                 ctf_integer(unsigned long, ino, inode->i_ino)
 190                 ctf_integer(unsigned long, flags, flags)
 191         )
 192 )
 193 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
 194 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
 195         TP_PROTO(struct inode *inode, int flags), \
 196         TP_ARGS(inode, flags))
 197 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
 198 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
 199
 200 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
 201         TP_PROTO(struct inode *inode, struct writeback_control *wbc),
 202         TP_ARGS(inode, wbc),
 203         TP_FIELDS(
 204                 ctf_string(name, lttng_bdi_dev_name(inode->i_mapping->backing_dev_info))
 205                 ctf_integer(unsigned long, ino, inode->i_ino)
 206                 ctf_integer(int, sync_mode, wbc->sync_mode)
 207         )
 208 )
 209
 210 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
 211 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
 212         TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
 213         TP_ARGS(inode, wbc))
 214 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
 215 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 216
 217 #endif /* (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0)) */
 218
 219 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 220
 221 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 222         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
 223         TP_ARGS(wb, work),
 224         TP_FIELDS(
 225                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 226         )
 227 )
 228
 229 #else
 230
 231 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 232         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 233         TP_ARGS(bdi, work),
 234         TP_FIELDS(
 235                 ctf_string(name, lttng_bdi_dev_name(bdi))
 236         )
 237 )
 238
 239 #endif /* #else if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 240
 241 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 242
 243 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 244 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 245         TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
 246         TP_ARGS(wb, work))
 247
 248 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 249
 250 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
 251 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 252         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 253         TP_ARGS(bdi, work))
 254
 255 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 256
 257 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
 258 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
 259 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 260 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 261 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
 262 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
 263 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 264 #endif
 265
 266 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 267         TP_PROTO(long pages_written),
 268         TP_ARGS(pages_written),
 269         TP_FIELDS(
 270                 ctf_integer(long, pages, pages_written)
 271         )
 272 )
 273
 274 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 275
 276 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 277         TP_PROTO(struct bdi_writeback *wb),
 278         TP_ARGS(wb),
 279         TP_FIELDS(
 280                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 281         )
 282 )
 283
 284 #undef DEFINE_WRITEBACK_EVENT
 285 #define DEFINE_WRITEBACK_EVENT(name) \
 286 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 287         TP_PROTO(struct bdi_writeback *wb), \
 288         TP_ARGS(wb))
 289
 290 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 291 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 292         TP_PROTO(struct bdi_writeback *wb), \
 293         TP_ARGS(wb))
 294
 295 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register,
 296         TP_PROTO(struct backing_dev_info *bdi),
 297         TP_ARGS(bdi),
 298         TP_FIELDS(
 299                 ctf_string(name, lttng_bdi_dev_name(bdi))
 300         )
 301 )
 302
 303 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 304
 305 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 306         TP_PROTO(struct backing_dev_info *bdi),
 307         TP_ARGS(bdi),
 308         TP_FIELDS(
 309                 ctf_string(name, lttng_bdi_dev_name(bdi))
 310         )
 311 )
 312
 313 #undef DEFINE_WRITEBACK_EVENT
 314 #define DEFINE_WRITEBACK_EVENT(name) \
 315 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
 316         TP_PROTO(struct backing_dev_info *bdi), \
 317         TP_ARGS(bdi))
 318
 319 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
 320 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 321         TP_PROTO(struct backing_dev_info *bdi), \
 322         TP_ARGS(bdi))
 323
 324 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
 325
 326 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 327
 328 DEFINE_WRITEBACK_EVENT(writeback_nowork)
 329 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
 330 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
 331 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
 332 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 333 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 334 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 335 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
 336 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
 337 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
 338
 339 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 340
 341         writeback_balance_dirty_written,
 342
 343         TP_PROTO(struct backing_dev_info *bdi, int written),
 344
 345         TP_ARGS(bdi, written),
 346
 347         TP_FIELDS(
 348                 ctf_string(name, lttng_bdi_dev_name(bdi))
 349                 ctf_integer(int, written, written)
 350         )
 351 )
 352 #endif
 353
 354 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 355         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 356         TP_ARGS(wbc, bdi),
 357         TP_FIELDS(
 358                 ctf_string(name, lttng_bdi_dev_name(bdi))
 359                 ctf_integer(long, nr_to_write, wbc->nr_to_write)
 360                 ctf_integer(long, pages_skipped, wbc->pages_skipped)
 361                 ctf_integer(int, sync_mode, wbc->sync_mode)
 362                 ctf_integer(int, for_kupdate, wbc->for_kupdate)
 363                 ctf_integer(int, for_background, wbc->for_background)
 364                 ctf_integer(int, for_reclaim, wbc->for_reclaim)
 365                 ctf_integer(int, range_cyclic, wbc->range_cyclic)
 366 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 367                 ctf_integer(int, more_io, wbc->more_io)
 368                 ctf_integer(unsigned long, older_than_this,
 369                         wbc->older_than_this ? *wbc->older_than_this : 0)
 370 #endif
 371                 ctf_integer(long, range_start, (long) wbc->range_start)
 372                 ctf_integer(long, range_end, (long) wbc->range_end)
 373         )
 374 )
 375
 376 #undef DEFINE_WBC_EVENT
 377 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
 378 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 379         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 380         TP_ARGS(wbc, bdi))
 381 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,1,0))
 382 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
 383 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
 384 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
 385 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
 386 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
 387 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 388 #endif
 389 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 390
 391 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,9,0) || \
 392         LTTNG_KERNEL_RANGE(5,8,6, 5,9,0) || \
 393         LTTNG_KERNEL_RANGE(5,4,62, 5,5,0) || \
 394         LTTNG_KERNEL_RANGE(4,19,143, 4,20,0) || \
 395         LTTNG_KERNEL_RANGE(4,14,196, 4,15,0) || \
 396         LTTNG_KERNEL_RANGE(4,9,235, 4,10,0) || \
 397         LTTNG_KERNEL_RANGE(4,4,235, 4,5,0) || \
 398         LTTNG_UBUNTU_KERNEL_RANGE(4,15,18,119, 4,16,0,0) || \
 399         LTTNG_RHEL_KERNEL_RANGE(4,18,0,240,0,0, 4,19,0,0,0,0))
 400 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 401         TP_PROTO(struct bdi_writeback *wb,
 402                  struct wb_writeback_work *work,
 403                  unsigned long dirtied_before,
 404                  int moved),
 405         TP_ARGS(wb, work, dirtied_before, moved),
 406         TP_FIELDS(
 407                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 408                 ctf_integer(unsigned long, older, dirtied_before)
 409                 ctf_integer(int, moved, moved)
 410         )
 411 )
 412 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0))
 413 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 414         TP_PROTO(struct bdi_writeback *wb,
 415                  struct wb_writeback_work *work,
 416                  int moved),
 417         TP_ARGS(wb, work, moved),
 418         TP_FIELDS(
 419                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 420                 ctf_integer(int, moved, moved)
 421         )
 422 )
 423 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 424 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 425         TP_PROTO(struct bdi_writeback *wb,
 426                  unsigned long *older_than_this,
 427                  int moved),
 428         TP_ARGS(wb, older_than_this, moved),
 429         TP_FIELDS(
 430                 ctf_string(name, lttng_bdi_dev_name(wb->bdi))
 431                 ctf_integer(unsigned long, older,
 432                         older_than_this ? *older_than_this : 0)
 433                 ctf_integer(long, age,
 434                         older_than_this ?
 435                                 (jiffies - *older_than_this) * 1000 / HZ
 436                                 : -1)
 437                 ctf_integer(int, moved, moved)
 438         )
 439 )
 440 #endif
 441
 442 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,8,0) || \
 443         LTTNG_RHEL_KERNEL_RANGE(4,18,0,305,0,0, 4,19,0,0,0,0))
 444 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 445
 446         writeback_global_dirty_state,
 447
 448         TP_PROTO(unsigned long background_thresh,
 449                  unsigned long dirty_thresh
 450         ),
 451
 452         TP_ARGS(background_thresh,
 453                 dirty_thresh
 454         ),
 455
 456         TP_FIELDS(
 457                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 458                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 459                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 460                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 461                 ctf_integer(unsigned long, background_thresh, background_thresh)
 462                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 463                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 464         )
 465 )
 466 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,14,0))
 467 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 468
 469         writeback_global_dirty_state,
 470
 471         TP_PROTO(unsigned long background_thresh,
 472                  unsigned long dirty_thresh
 473         ),
 474
 475         TP_ARGS(background_thresh,
 476                 dirty_thresh
 477         ),
 478
 479         TP_FIELDS(
 480                 ctf_integer(unsigned long, nr_dirty, global_node_page_state(NR_FILE_DIRTY))
 481                 ctf_integer(unsigned long, nr_writeback, global_node_page_state(NR_WRITEBACK))
 482                 ctf_integer(unsigned long, nr_unstable, global_node_page_state(NR_UNSTABLE_NFS))
 483                 ctf_integer(unsigned long, nr_dirtied, global_node_page_state(NR_DIRTIED))
 484                 ctf_integer(unsigned long, nr_written, global_node_page_state(NR_WRITTEN))
 485                 ctf_integer(unsigned long, background_thresh, background_thresh)
 486                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 487                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 488         )
 489 )
 490 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 491 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
 492
 493         writeback_global_dirty_state,
 494
 495         TP_PROTO(unsigned long background_thresh,
 496                  unsigned long dirty_thresh
 497         ),
 498
 499         TP_ARGS(background_thresh,
 500                 dirty_thresh
 501         ),
 502
 503         TP_FIELDS(
 504                 ctf_integer(unsigned long, nr_dirty, global_page_state(NR_FILE_DIRTY))
 505                 ctf_integer(unsigned long, nr_writeback, global_page_state(NR_WRITEBACK))
 506                 ctf_integer(unsigned long, nr_unstable, global_page_state(NR_UNSTABLE_NFS))
 507                 ctf_integer(unsigned long, nr_dirtied, global_page_state(NR_DIRTIED))
 508                 ctf_integer(unsigned long, nr_written, global_page_state(NR_WRITTEN))
 509                 ctf_integer(unsigned long, background_thresh, background_thresh)
 510                 ctf_integer(unsigned long, dirty_thresh, dirty_thresh)
 511                 ctf_integer(unsigned long, dirty_limit, global_dirty_limit)
 512         )
 513 )
 514 #endif
 515
 516 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0))
 517
 518 #define KBps(x)                 ((x) << (PAGE_SHIFT - 10))
 519
 520 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 521
 522 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 523
 524         writeback_bdi_dirty_ratelimit,
 525
 526         TP_PROTO(struct bdi_writeback *wb,
 527                  unsigned long dirty_rate,
 528                  unsigned long task_ratelimit),
 529
 530         TP_ARGS(wb, dirty_rate, task_ratelimit),
 531
 532         TP_FIELDS(
 533                 ctf_string(bdi, lttng_bdi_dev_name(wb->bdi))
 534                 ctf_integer(unsigned long, write_bw, KBps(wb->bdi->wb.write_bandwidth))
 535                 ctf_integer(unsigned long, avg_write_bw, KBps(wb->bdi->wb.avg_write_bandwidth))
 536                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 537                 ctf_integer(unsigned long, dirty_ratelimit, KBps(wb->bdi->wb.dirty_ratelimit))
 538                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 539                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 540                                         KBps(wb->bdi->wb.balanced_dirty_ratelimit))
 541         )
 542 )
 543
 544 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0))
 545
 546 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 547
 548         writeback_bdi_dirty_ratelimit,
 549
 550         TP_PROTO(struct backing_dev_info *bdi,
 551                  unsigned long dirty_rate,
 552                  unsigned long task_ratelimit),
 553
 554         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 555
 556         TP_FIELDS(
 557                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 558                 ctf_integer(unsigned long, write_bw, KBps(bdi->wb.write_bandwidth))
 559                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->wb.avg_write_bandwidth))
 560                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 561                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->wb.dirty_ratelimit))
 562                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 563                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 564                                         KBps(bdi->wb.balanced_dirty_ratelimit))
 565         )
 566 )
 567
 568 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
 569
 570 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
 571
 572         writeback_bdi_dirty_ratelimit,
 573
 574         TP_PROTO(struct backing_dev_info *bdi,
 575                  unsigned long dirty_rate,
 576                  unsigned long task_ratelimit),
 577
 578         TP_ARGS(bdi, dirty_rate, task_ratelimit),
 579
 580         TP_FIELDS(
 581                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 582                 ctf_integer(unsigned long, write_bw, KBps(bdi->write_bandwidth))
 583                 ctf_integer(unsigned long, avg_write_bw, KBps(bdi->avg_write_bandwidth))
 584                 ctf_integer(unsigned long, dirty_rate, KBps(dirty_rate))
 585                 ctf_integer(unsigned long, dirty_ratelimit, KBps(bdi->dirty_ratelimit))
 586                 ctf_integer(unsigned long, task_ratelimit, KBps(task_ratelimit))
 587                 ctf_integer(unsigned long, balanced_dirty_ratelimit,
 588                                         KBps(bdi->balanced_dirty_ratelimit))
 589         )
 590 )
 591
 592 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
 593
 594 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0))
 595
 596 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 597
 598         writeback_balance_dirty_pages,
 599
 600         TP_PROTO(struct bdi_writeback *wb,
 601                  unsigned long thresh,
 602                  unsigned long bg_thresh,
 603                  unsigned long dirty,
 604                  unsigned long bdi_thresh,
 605                  unsigned long bdi_dirty,
 606                  unsigned long dirty_ratelimit,
 607                  unsigned long task_ratelimit,
 608                  unsigned long dirtied,
 609                  unsigned long period,
 610                  long pause,
 611                  unsigned long start_time),
 612
 613         TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 614                 dirty_ratelimit, task_ratelimit,
 615                 dirtied, period, pause, start_time
 616         ),
 617
 618         TP_FIELDS(
 619                 ctf_string(bdi, lttng_bdi_dev_name(wb->bdi))
 620                 ctf_integer(unsigned long, limit, global_dirty_limit)
 621                 ctf_integer(unsigned long, setpoint,
 622                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 623                 ctf_integer(unsigned long, dirty, dirty)
 624                 ctf_integer(unsigned long, bdi_setpoint,
 625                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 626                                 bdi_thresh / (thresh + 1))
 627                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 628                 ctf_integer(unsigned long, dirty_ratelimit,
 629                         KBps(dirty_ratelimit))
 630                 ctf_integer(unsigned long, task_ratelimit,
 631                         KBps(task_ratelimit))
 632                 ctf_integer(unsigned int, dirtied, dirtied)
 633                 ctf_integer(unsigned int, dirtied_pause,
 634                         current->nr_dirtied_pause)
 635                 ctf_integer(unsigned long, paused,
 636                         (jiffies - start_time) * 1000 / HZ)
 637                 ctf_integer(long, pause, pause * 1000 / HZ)
 638                 ctf_integer(unsigned long, period,
 639                         period * 1000 / HZ)
 640                 ctf_integer(long, think,
 641                         current->dirty_paused_when == 0 ? 0 :
 642                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 643         )
 644 )
 645
 646 #else /* #if LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 647
 648 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
 649
 650         writeback_balance_dirty_pages,
 651
 652         TP_PROTO(struct backing_dev_info *bdi,
 653                  unsigned long thresh,
 654                  unsigned long bg_thresh,
 655                  unsigned long dirty,
 656                  unsigned long bdi_thresh,
 657                  unsigned long bdi_dirty,
 658                  unsigned long dirty_ratelimit,
 659                  unsigned long task_ratelimit,
 660                  unsigned long dirtied,
 661 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 662                  unsigned long period,
 663 #endif
 664                  long pause,
 665                  unsigned long start_time),
 666
 667         TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
 668                 dirty_ratelimit, task_ratelimit,
 669 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 670                 dirtied, period, pause, start_time
 671 #else
 672                 dirtied, pause, start_time
 673 #endif
 674         ),
 675
 676         TP_FIELDS(
 677                 ctf_string(bdi, lttng_bdi_dev_name(bdi))
 678                 ctf_integer(unsigned long, limit, global_dirty_limit)
 679                 ctf_integer(unsigned long, setpoint,
 680                         (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
 681                 ctf_integer(unsigned long, dirty, dirty)
 682                 ctf_integer(unsigned long, bdi_setpoint,
 683                         ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
 684                                 bdi_thresh / (thresh + 1))
 685                 ctf_integer(unsigned long, bdi_dirty, bdi_dirty)
 686                 ctf_integer(unsigned long, dirty_ratelimit,
 687                         KBps(dirty_ratelimit))
 688                 ctf_integer(unsigned long, task_ratelimit,
 689                         KBps(task_ratelimit))
 690                 ctf_integer(unsigned int, dirtied, dirtied)
 691                 ctf_integer(unsigned int, dirtied_pause,
 692                         current->nr_dirtied_pause)
 693                 ctf_integer(unsigned long, paused,
 694                         (jiffies - start_time) * 1000 / HZ)
 695                 ctf_integer(long, pause, pause * 1000 / HZ)
 696 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
 697                 ctf_integer(unsigned long, period,
 698                         period * 1000 / HZ)
 699                 ctf_integer(long, think,
 700                         current->dirty_paused_when == 0 ? 0 :
 701                                 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
 702 #endif
 703         )
 704 )
 705 #endif /* #else #if LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,3,0)) */
 706
 707 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,2,0)) */
 708
 709 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,5,0))
 710 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 711
 712         TP_PROTO(struct inode *inode),
 713         TP_ARGS(inode),
 714
 715         TP_FIELDS(
 716                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 717                 ctf_integer(unsigned long, ino, inode->i_ino)
 718                 ctf_integer(unsigned long, state, inode->i_state)
 719                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 720         )
 721 )
 722 #endif
 723
 724 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 725
 726         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 727
 728         TP_ARGS(usec_timeout, usec_delayed),
 729
 730         TP_FIELDS(
 731                 ctf_integer(unsigned int, usec_timeout, usec_timeout)
 732                 ctf_integer(unsigned int, usec_delayed, usec_delayed)
 733         )
 734 )
 735
 736 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 737
 738         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 739
 740         TP_ARGS(usec_timeout, usec_delayed)
 741 )
 742
 743 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 744
 745         TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 746
 747         TP_ARGS(usec_timeout, usec_delayed)
 748 )
 749
 750 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 751 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 752
 753         TP_PROTO(struct inode *inode,
 754                  struct writeback_control *wbc,
 755                  unsigned long nr_to_write
 756         ),
 757
 758         TP_ARGS(inode, wbc, nr_to_write),
 759
 760         TP_FIELDS(
 761                 ctf_string(name, lttng_bdi_dev_name(lttng_inode_to_bdi(inode)))
 762                 ctf_integer(unsigned long, ino, inode->i_ino)
 763                 ctf_integer(unsigned long, state, inode->i_state)
 764                 ctf_integer(unsigned long, dirtied_when, inode->dirtied_when)
 765                 ctf_integer(unsigned long, writeback_index,
 766                         inode->i_mapping->writeback_index)
 767                 ctf_integer(long, nr_to_write, nr_to_write)
 768                 ctf_integer(unsigned long, wrote,
 769                         nr_to_write - wbc->nr_to_write)
 770         )
 771 )
 772
 773 #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,5,0))
 774 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 775         TP_PROTO(struct inode *inode,
 776                 struct writeback_control *wbc,
 777                 unsigned long nr_to_write),
 778         TP_ARGS(inode, wbc, nr_to_write)
 779 )
 780 #endif
 781
 782 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 783         TP_PROTO(struct inode *inode,
 784                  struct writeback_control *wbc,
 785                  unsigned long nr_to_write),
 786         TP_ARGS(inode, wbc, nr_to_write)
 787 )
 788 #endif
 789
 790 #endif /* LTTNG_TRACE_WRITEBACK_H */
 791
 792 /* This part must be outside protection */
 793 #include <lttng/define_trace.h>