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Rename LTTng instrumentation macros
[lttng-modules.git] / instrumentation / events / lttng-module / writeback.h
1 #undef TRACE_SYSTEM
2 #define TRACE_SYSTEM writeback
3
4 #if !defined(LTTNG_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define LTTNG_TRACE_WRITEBACK_H
6
7 #include "../../../probes/lttng-tracepoint-event.h"
8 #include <linux/backing-dev.h>
9 #include <linux/writeback.h>
10 #include <linux/version.h>
11
12 #ifndef _TRACE_WRITEBACK_DEF_
13 #define _TRACE_WRITEBACK_DEF_
14 static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
15 {
16 struct super_block *sb = inode->i_sb;
17
18 if (strcmp(sb->s_type->name, "bdev") == 0)
19 return inode->i_mapping->backing_dev_info;
20
21 return sb->s_bdi;
22 }
23 #endif
24
25 #define show_inode_state(state) \
26 __print_flags(state, "|", \
27 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
28 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
29 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
30 {I_NEW, "I_NEW"}, \
31 {I_WILL_FREE, "I_WILL_FREE"}, \
32 {I_FREEING, "I_FREEING"}, \
33 {I_CLEAR, "I_CLEAR"}, \
34 {I_SYNC, "I_SYNC"}, \
35 {I_REFERENCED, "I_REFERENCED"} \
36 )
37
38 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
39 #define WB_WORK_REASON \
40 {WB_REASON_BACKGROUND, "background"}, \
41 {WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
42 {WB_REASON_SYNC, "sync"}, \
43 {WB_REASON_PERIODIC, "periodic"}, \
44 {WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
45 {WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
46 {WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
47 {WB_REASON_FORKER_THREAD, "forker_thread"}
48 #endif
49
50 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
51 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
52 TP_ARGS(bdi, work),
53 TP_STRUCT__entry(
54 __array(char, name, 32)
55 ),
56 TP_fast_assign(
57 tp_memcpy(name, dev_name(bdi->dev ? bdi->dev :
58 default_backing_dev_info.dev), 32)
59 ),
60 TP_printk("bdi %s",
61 __entry->name
62 )
63 )
64 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
65 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
66 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
67 TP_ARGS(bdi, work))
68 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
69 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
70 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
71 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
72 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
73 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
74 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
75 #endif
76
77 LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
78 TP_PROTO(long pages_written),
79 TP_ARGS(pages_written),
80 TP_STRUCT__entry(
81 __field(long, pages)
82 ),
83 TP_fast_assign(
84 tp_assign(pages, pages_written)
85 ),
86 TP_printk("%ld", __entry->pages)
87 )
88
89 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
90 TP_PROTO(struct backing_dev_info *bdi),
91 TP_ARGS(bdi),
92 TP_STRUCT__entry(
93 __array(char, name, 32)
94 ),
95 TP_fast_assign(
96 tp_memcpy(name, dev_name(bdi->dev), 32)
97 ),
98 TP_printk("bdi %s",
99 __entry->name
100 )
101 )
102 #define DEFINE_WRITEBACK_EVENT(name) \
103 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
104 TP_PROTO(struct backing_dev_info *bdi), \
105 TP_ARGS(bdi))
106
107 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
108 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
109 TP_PROTO(struct backing_dev_info *bdi), \
110 TP_ARGS(bdi))
111
112 DEFINE_WRITEBACK_EVENT(writeback_nowork)
113 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
114 DEFINE_WRITEBACK_EVENT(writeback_wake_background)
115 #endif
116 DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
117 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
118 DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
119 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
120 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
121 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
122 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
123 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
124 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
125
126 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
127
128 writeback_balance_dirty_written,
129
130 TP_PROTO(struct backing_dev_info *bdi, int written),
131
132 TP_ARGS(bdi, written),
133
134 TP_STRUCT__entry(
135 __array(char, name, 32)
136 __field(int, written)
137 ),
138
139 TP_fast_assign(
140 tp_memcpy(name, dev_name(bdi->dev), 32)
141 tp_assign(written, written)
142 ),
143
144 TP_printk("bdi %s written %d",
145 __entry->name,
146 __entry->written
147 )
148 )
149 #endif
150
151 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
152 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
153 TP_ARGS(wbc, bdi),
154 TP_STRUCT__entry(
155 __array(char, name, 32)
156 __field(long, nr_to_write)
157 __field(long, pages_skipped)
158 __field(int, sync_mode)
159 __field(int, for_kupdate)
160 __field(int, for_background)
161 __field(int, for_reclaim)
162 __field(int, range_cyclic)
163 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
164 __field(int, more_io)
165 __field(unsigned long, older_than_this)
166 #endif
167 __field(long, range_start)
168 __field(long, range_end)
169 ),
170
171 TP_fast_assign(
172 tp_memcpy(name, dev_name(bdi->dev), 32)
173 tp_assign(nr_to_write, wbc->nr_to_write)
174 tp_assign(pages_skipped, wbc->pages_skipped)
175 tp_assign(sync_mode, wbc->sync_mode)
176 tp_assign(for_kupdate, wbc->for_kupdate)
177 tp_assign(for_background, wbc->for_background)
178 tp_assign(for_reclaim, wbc->for_reclaim)
179 tp_assign(range_cyclic, wbc->range_cyclic)
180 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
181 tp_assign(more_io, wbc->more_io)
182 tp_assign(older_than_this, wbc->older_than_this ?
183 *wbc->older_than_this : 0)
184 #endif
185 tp_assign(range_start, (long)wbc->range_start)
186 tp_assign(range_end, (long)wbc->range_end)
187 ),
188
189 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
190 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
191 "bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
192 #else
193 "bgrd=%d reclm=%d cyclic=%d "
194 #endif
195 "start=0x%lx end=0x%lx",
196 __entry->name,
197 __entry->nr_to_write,
198 __entry->pages_skipped,
199 __entry->sync_mode,
200 __entry->for_kupdate,
201 __entry->for_background,
202 __entry->for_reclaim,
203 __entry->range_cyclic,
204 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
205 __entry->more_io,
206 __entry->older_than_this,
207 #endif
208 __entry->range_start,
209 __entry->range_end)
210 )
211
212 #undef DEFINE_WBC_EVENT
213 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
214 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
215 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
216 TP_ARGS(wbc, bdi))
217 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
218 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
219 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
220 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
221 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
222 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
223 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
224 #endif
225 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
226
227 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
228 LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
229 TP_PROTO(struct bdi_writeback *wb,
230 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
231 struct wb_writeback_work *work,
232 #else
233 unsigned long *older_than_this,
234 #endif
235 int moved),
236 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
237 TP_ARGS(wb, work, moved),
238 #else
239 TP_ARGS(wb, older_than_this, moved),
240 #endif
241 TP_STRUCT__entry(
242 __array(char, name, 32)
243 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
244 #else
245 __field(unsigned long, older)
246 __field(long, age)
247 #endif
248 __field(int, moved)
249 ),
250 TP_fast_assign(
251 tp_memcpy(name, dev_name(wb->bdi->dev), 32)
252 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
253 #else
254 tp_assign(older, older_than_this ? *older_than_this : 0)
255 tp_assign(age, older_than_this ?
256 (jiffies - *older_than_this) * 1000 / HZ : -1)
257 #endif
258 tp_assign(moved, moved)
259 ),
260 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
261 TP_printk("bdi %s: enqueue=%d",
262 __entry->name,
263 __entry->moved,
264 )
265 #else
266 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
267 __entry->name,
268 __entry->older, /* older_than_this in jiffies */
269 __entry->age, /* older_than_this in relative milliseconds */
270 __entry->moved
271 )
272 #endif
273 )
274
275 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
276
277 writeback_global_dirty_state,
278
279 TP_PROTO(unsigned long background_thresh,
280 unsigned long dirty_thresh
281 ),
282
283 TP_ARGS(background_thresh,
284 dirty_thresh
285 ),
286
287 TP_STRUCT__entry(
288 __field(unsigned long, nr_dirty)
289 __field(unsigned long, nr_writeback)
290 __field(unsigned long, nr_unstable)
291 __field(unsigned long, background_thresh)
292 __field(unsigned long, dirty_thresh)
293 __field(unsigned long, dirty_limit)
294 __field(unsigned long, nr_dirtied)
295 __field(unsigned long, nr_written)
296 ),
297
298 TP_fast_assign(
299 tp_assign(nr_dirty, global_page_state(NR_FILE_DIRTY))
300 tp_assign(nr_writeback, global_page_state(NR_WRITEBACK))
301 tp_assign(nr_unstable, global_page_state(NR_UNSTABLE_NFS))
302 tp_assign(nr_dirtied, global_page_state(NR_DIRTIED))
303 tp_assign(nr_written, global_page_state(NR_WRITTEN))
304 tp_assign(background_thresh, background_thresh)
305 tp_assign(dirty_thresh, dirty_thresh)
306 tp_assign(dirty_limit, global_dirty_limit)
307 ),
308
309 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
310 "bg_thresh=%lu thresh=%lu limit=%lu "
311 "dirtied=%lu written=%lu",
312 __entry->nr_dirty,
313 __entry->nr_writeback,
314 __entry->nr_unstable,
315 __entry->background_thresh,
316 __entry->dirty_thresh,
317 __entry->dirty_limit,
318 __entry->nr_dirtied,
319 __entry->nr_written
320 )
321 )
322 #endif
323
324 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
325
326 #define KBps(x) ((x) << (PAGE_SHIFT - 10))
327
328 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
329
330 writeback_bdi_dirty_ratelimit,
331
332 TP_PROTO(struct backing_dev_info *bdi,
333 unsigned long dirty_rate,
334 unsigned long task_ratelimit),
335
336 TP_ARGS(bdi, dirty_rate, task_ratelimit),
337
338 TP_STRUCT__entry(
339 __array(char, bdi, 32)
340 __field(unsigned long, write_bw)
341 __field(unsigned long, avg_write_bw)
342 __field(unsigned long, dirty_rate)
343 __field(unsigned long, dirty_ratelimit)
344 __field(unsigned long, task_ratelimit)
345 __field(unsigned long, balanced_dirty_ratelimit)
346 ),
347
348 TP_fast_assign(
349 tp_memcpy(bdi, dev_name(bdi->dev), 32)
350 tp_assign(write_bw, KBps(bdi->write_bandwidth))
351 tp_assign(avg_write_bw, KBps(bdi->avg_write_bandwidth))
352 tp_assign(dirty_rate, KBps(dirty_rate))
353 tp_assign(dirty_ratelimit, KBps(bdi->dirty_ratelimit))
354 tp_assign(task_ratelimit, KBps(task_ratelimit))
355 tp_assign(balanced_dirty_ratelimit,
356 KBps(bdi->balanced_dirty_ratelimit))
357 ),
358
359 TP_printk("bdi %s: "
360 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
361 "dirty_ratelimit=%lu task_ratelimit=%lu "
362 "balanced_dirty_ratelimit=%lu",
363 __entry->bdi,
364 __entry->write_bw, /* write bandwidth */
365 __entry->avg_write_bw, /* avg write bandwidth */
366 __entry->dirty_rate, /* bdi dirty rate */
367 __entry->dirty_ratelimit, /* base ratelimit */
368 __entry->task_ratelimit, /* ratelimit with position control */
369 __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
370 )
371 )
372
373 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
374
375 writeback_balance_dirty_pages,
376
377 TP_PROTO(struct backing_dev_info *bdi,
378 unsigned long thresh,
379 unsigned long bg_thresh,
380 unsigned long dirty,
381 unsigned long bdi_thresh,
382 unsigned long bdi_dirty,
383 unsigned long dirty_ratelimit,
384 unsigned long task_ratelimit,
385 unsigned long dirtied,
386 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
387 unsigned long period,
388 #endif
389 long pause,
390 unsigned long start_time),
391
392 TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
393 dirty_ratelimit, task_ratelimit,
394 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
395 dirtied, period, pause, start_time),
396 #else
397 dirtied, pause, start_time),
398 #endif
399 TP_STRUCT__entry(
400 __array( char, bdi, 32)
401 __field(unsigned long, limit)
402 __field(unsigned long, setpoint)
403 __field(unsigned long, dirty)
404 __field(unsigned long, bdi_setpoint)
405 __field(unsigned long, bdi_dirty)
406 __field(unsigned long, dirty_ratelimit)
407 __field(unsigned long, task_ratelimit)
408 __field(unsigned int, dirtied)
409 __field(unsigned int, dirtied_pause)
410 __field(unsigned long, paused)
411 __field( long, pause)
412 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
413 __field(unsigned long, period)
414 __field( long, think)
415 #endif
416 ),
417
418 TP_fast_assign(
419 tp_memcpy(bdi, dev_name(bdi->dev), 32)
420 tp_assign(limit, global_dirty_limit)
421 tp_assign(setpoint,
422 (global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
423 tp_assign(dirty, dirty)
424 tp_assign(bdi_setpoint,
425 ((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
426 bdi_thresh / (thresh + 1))
427 tp_assign(bdi_dirty, bdi_dirty)
428 tp_assign(dirty_ratelimit, KBps(dirty_ratelimit))
429 tp_assign(task_ratelimit, KBps(task_ratelimit))
430 tp_assign(dirtied, dirtied)
431 tp_assign(dirtied_pause, current->nr_dirtied_pause)
432 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
433 tp_assign(think, current->dirty_paused_when == 0 ? 0 :
434 (long)(jiffies - current->dirty_paused_when) * 1000/HZ)
435 tp_assign(period, period * 1000 / HZ)
436 #endif
437 tp_assign(pause, pause * 1000 / HZ)
438 tp_assign(paused, (jiffies - start_time) * 1000 / HZ)
439 ),
440
441
442 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
443 TP_printk("bdi %s: "
444 "limit=%lu setpoint=%lu dirty=%lu "
445 "bdi_setpoint=%lu bdi_dirty=%lu "
446 "dirty_ratelimit=%lu task_ratelimit=%lu "
447 "dirtied=%u dirtied_pause=%u "
448 "paused=%lu pause=%ld period=%lu think=%ld",
449 __entry->bdi,
450 __entry->limit,
451 __entry->setpoint,
452 __entry->dirty,
453 __entry->bdi_setpoint,
454 __entry->bdi_dirty,
455 __entry->dirty_ratelimit,
456 __entry->task_ratelimit,
457 __entry->dirtied,
458 __entry->dirtied_pause,
459 __entry->paused, /* ms */
460 __entry->pause, /* ms */
461 __entry->period, /* ms */
462 __entry->think /* ms */
463 )
464 #else
465 TP_printk("bdi %s: "
466 "limit=%lu setpoint=%lu dirty=%lu "
467 "bdi_setpoint=%lu bdi_dirty=%lu "
468 "dirty_ratelimit=%lu task_ratelimit=%lu "
469 "dirtied=%u dirtied_pause=%u "
470 "paused=%lu pause=%ld",
471 __entry->bdi,
472 __entry->limit,
473 __entry->setpoint,
474 __entry->dirty,
475 __entry->bdi_setpoint,
476 __entry->bdi_dirty,
477 __entry->dirty_ratelimit,
478 __entry->task_ratelimit,
479 __entry->dirtied,
480 __entry->dirtied_pause,
481 __entry->paused, /* ms */
482 __entry->pause /* ms */
483 )
484 #endif
485 )
486 #endif
487
488 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
489 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
490
491 TP_PROTO(struct inode *inode),
492 TP_ARGS(inode),
493
494 TP_STRUCT__entry(
495 __array(char, name, 32)
496 __field(unsigned long, ino)
497 __field(unsigned long, state)
498 __field(unsigned long, dirtied_when)
499 ),
500
501 TP_fast_assign(
502 tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
503 tp_assign(ino, inode->i_ino)
504 tp_assign(state, inode->i_state)
505 tp_assign(dirtied_when, inode->dirtied_when)
506 ),
507
508 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
509 __entry->name,
510 __entry->ino,
511 show_inode_state(__entry->state),
512 __entry->dirtied_when,
513 (jiffies - __entry->dirtied_when) / HZ
514 )
515 )
516 #endif
517
518 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
519 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
520
521 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
522
523 TP_ARGS(usec_timeout, usec_delayed),
524
525 TP_STRUCT__entry(
526 __field( unsigned int, usec_timeout )
527 __field( unsigned int, usec_delayed )
528 ),
529
530 TP_fast_assign(
531 tp_assign(usec_timeout, usec_timeout)
532 tp_assign(usec_delayed, usec_delayed)
533 ),
534
535 TP_printk("usec_timeout=%u usec_delayed=%u",
536 __entry->usec_timeout,
537 __entry->usec_delayed)
538 )
539
540 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
541
542 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
543
544 TP_ARGS(usec_timeout, usec_delayed)
545 )
546
547 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
548
549 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
550
551 TP_ARGS(usec_timeout, usec_delayed)
552 )
553 #endif
554
555 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
556 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
557
558 TP_PROTO(struct inode *inode,
559 struct writeback_control *wbc,
560 unsigned long nr_to_write
561 ),
562
563 TP_ARGS(inode, wbc, nr_to_write),
564
565 TP_STRUCT__entry(
566 __array(char, name, 32)
567 __field(unsigned long, ino)
568 __field(unsigned long, state)
569 __field(unsigned long, dirtied_when)
570 __field(unsigned long, writeback_index)
571 __field(long, nr_to_write)
572 __field(unsigned long, wrote)
573 ),
574
575 TP_fast_assign(
576 tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
577 tp_assign(ino, inode->i_ino)
578 tp_assign(state, inode->i_state)
579 tp_assign(dirtied_when, inode->dirtied_when)
580 tp_assign(writeback_index, inode->i_mapping->writeback_index)
581 tp_assign(nr_to_write, nr_to_write)
582 tp_assign(wrote, nr_to_write - wbc->nr_to_write)
583 ),
584
585 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
586 "index=%lu to_write=%ld wrote=%lu",
587 __entry->name,
588 __entry->ino,
589 show_inode_state(__entry->state),
590 __entry->dirtied_when,
591 (jiffies - __entry->dirtied_when) / HZ,
592 __entry->writeback_index,
593 __entry->nr_to_write,
594 __entry->wrote
595 )
596 )
597
598 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
599 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
600 TP_PROTO(struct inode *inode,
601 struct writeback_control *wbc,
602 unsigned long nr_to_write),
603 TP_ARGS(inode, wbc, nr_to_write)
604 )
605 #endif
606
607 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
608 TP_PROTO(struct inode *inode,
609 struct writeback_control *wbc,
610 unsigned long nr_to_write),
611 TP_ARGS(inode, wbc, nr_to_write)
612 )
613 #endif
614
615 #endif /* LTTNG_TRACE_WRITEBACK_H */
616
617 /* This part must be outside protection */
618 #include "../../../probes/define_trace.h"
LTTng 2.0/0.x modules
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