2 #define TRACE_SYSTEM writeback
4 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define _TRACE_WRITEBACK_H
7 #include <linux/backing-dev.h>
8 #include <linux/writeback.h>
9 #include <linux/version.h>
11 #ifndef _TRACE_WRITEBACK_DEF_
12 #define _TRACE_WRITEBACK_DEF_
13 static inline struct backing_dev_info
*inode_to_bdi(struct inode
*inode
)
15 struct super_block
*sb
= inode
->i_sb
;
17 if (strcmp(sb
->s_type
->name
, "bdev") == 0)
18 return inode
->i_mapping
->backing_dev_info
;
24 #define show_inode_state(state) \
25 __print_flags(state, "|", \
26 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
27 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
28 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
30 {I_WILL_FREE, "I_WILL_FREE"}, \
31 {I_FREEING, "I_FREEING"}, \
32 {I_CLEAR, "I_CLEAR"}, \
34 {I_REFERENCED, "I_REFERENCED"} \
37 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
38 #define WB_WORK_REASON \
39 {WB_REASON_BACKGROUND, "background"}, \
40 {WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
41 {WB_REASON_SYNC, "sync"}, \
42 {WB_REASON_PERIODIC, "periodic"}, \
43 {WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
44 {WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
45 {WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
46 {WB_REASON_FORKER_THREAD, "forker_thread"}
49 DECLARE_EVENT_CLASS(writeback_work_class
,
50 TP_PROTO(struct backing_dev_info
*bdi
, struct wb_writeback_work
*work
),
53 __array(char, name
, 32)
56 tp_memcpy(name
, dev_name(bdi
->dev
? bdi
->dev
:
57 default_backing_dev_info
.dev
), 32)
63 #define DEFINE_WRITEBACK_WORK_EVENT(name) \
64 DEFINE_EVENT(writeback_work_class, name, \
65 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
67 DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread
)
68 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue
)
69 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec
)
70 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
71 DEFINE_WRITEBACK_WORK_EVENT(writeback_start
)
72 DEFINE_WRITEBACK_WORK_EVENT(writeback_written
)
73 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait
)
76 TRACE_EVENT(writeback_pages_written
,
77 TP_PROTO(long pages_written
),
78 TP_ARGS(pages_written
),
83 tp_assign(pages
, pages_written
)
85 TP_printk("%ld", __entry
->pages
)
88 DECLARE_EVENT_CLASS(writeback_class
,
89 TP_PROTO(struct backing_dev_info
*bdi
),
92 __array(char, name
, 32)
95 tp_memcpy(name
, dev_name(bdi
->dev
), 32)
101 #define DEFINE_WRITEBACK_EVENT(name) \
102 DEFINE_EVENT(writeback_class, name, \
103 TP_PROTO(struct backing_dev_info *bdi), \
106 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
107 DEFINE_EVENT_MAP(writeback_class, name, map, \
108 TP_PROTO(struct backing_dev_info *bdi), \
111 DEFINE_WRITEBACK_EVENT(writeback_nowork
)
112 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
113 DEFINE_WRITEBACK_EVENT(writeback_wake_background
)
115 DEFINE_WRITEBACK_EVENT(writeback_wake_thread
)
116 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread
)
117 DEFINE_WRITEBACK_EVENT(writeback_bdi_register
)
118 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister
)
119 DEFINE_WRITEBACK_EVENT(writeback_thread_start
)
120 DEFINE_WRITEBACK_EVENT(writeback_thread_stop
)
121 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
122 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start
, writeback_balance_dirty_start
)
123 DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait
, writeback_balance_dirty_wait
)
125 TRACE_EVENT_MAP(balance_dirty_written
,
127 writeback_balance_dirty_written
,
129 TP_PROTO(struct backing_dev_info
*bdi
, int written
),
131 TP_ARGS(bdi
, written
),
134 __array(char, name
, 32)
135 __field(int, written
)
139 tp_memcpy(name
, dev_name(bdi
->dev
), 32)
140 tp_assign(written
, written
)
143 TP_printk("bdi %s written %d",
150 DECLARE_EVENT_CLASS(writeback_wbc_class
,
151 TP_PROTO(struct writeback_control
*wbc
, struct backing_dev_info
*bdi
),
154 __array(char, name
, 32)
155 __field(long, nr_to_write
)
156 __field(long, pages_skipped
)
157 __field(int, sync_mode
)
158 __field(int, for_kupdate
)
159 __field(int, for_background
)
160 __field(int, for_reclaim
)
161 __field(int, range_cyclic
)
162 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
163 __field(int, more_io
)
164 __field(unsigned long, older_than_this
)
166 __field(long, range_start
)
167 __field(long, range_end
)
171 tp_memcpy(name
, dev_name(bdi
->dev
), 32)
172 tp_assign(nr_to_write
, wbc
->nr_to_write
)
173 tp_assign(pages_skipped
, wbc
->pages_skipped
)
174 tp_assign(sync_mode
, wbc
->sync_mode
)
175 tp_assign(for_kupdate
, wbc
->for_kupdate
)
176 tp_assign(for_background
, wbc
->for_background
)
177 tp_assign(for_reclaim
, wbc
->for_reclaim
)
178 tp_assign(range_cyclic
, wbc
->range_cyclic
)
179 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
180 tp_assign(more_io
, wbc
->more_io
)
181 tp_assign(older_than_this
, wbc
->older_than_this
?
182 *wbc
->older_than_this
: 0)
184 tp_assign(range_start
, (long)wbc
->range_start
)
185 tp_assign(range_end
, (long)wbc
->range_end
)
188 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
189 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
190 "bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
192 "bgrd=%d reclm=%d cyclic=%d "
194 "start=0x%lx end=0x%lx",
196 __entry
->nr_to_write
,
197 __entry
->pages_skipped
,
199 __entry
->for_kupdate
,
200 __entry
->for_background
,
201 __entry
->for_reclaim
,
202 __entry
->range_cyclic
,
203 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
205 __entry
->older_than_this
,
207 __entry
->range_start
,
211 #undef DEFINE_WBC_EVENT
212 #define DEFINE_WBC_EVENT(name, map) \
213 DEFINE_EVENT_MAP(writeback_wbc_class, name, map, \
214 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
216 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
217 DEFINE_WBC_EVENT(wbc_writeback_start
, writeback_wbc_writeback_start
)
218 DEFINE_WBC_EVENT(wbc_writeback_written
, writeback_wbc_writeback_written
)
219 DEFINE_WBC_EVENT(wbc_writeback_wait
, writeback_wbc_writeback_wait
)
220 DEFINE_WBC_EVENT(wbc_balance_dirty_start
, writeback_wbc_balance_dirty_start
)
221 DEFINE_WBC_EVENT(wbc_balance_dirty_written
, writeback_wbc_balance_dirty_written
)
222 DEFINE_WBC_EVENT(wbc_balance_dirty_wait
, writeback_wbc_balance_dirty_wait
)
224 DEFINE_WBC_EVENT(wbc_writepage
, writeback_wbc_writepage
)
226 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
227 TRACE_EVENT(writeback_queue_io
,
228 TP_PROTO(struct bdi_writeback
*wb
,
229 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
230 struct wb_writeback_work
*work
,
232 unsigned long *older_than_this
,
235 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
236 TP_ARGS(wb
, work
, moved
),
238 TP_ARGS(wb
, older_than_this
, moved
),
241 __array(char, name
, 32)
242 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
244 __field(unsigned long, older
)
250 tp_memcpy(name
, dev_name(wb
->bdi
->dev
), 32)
251 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
253 tp_assign(older
, older_than_this
? *older_than_this
: 0)
254 tp_assign(age
, older_than_this
?
255 (jiffies
- *older_than_this
) * 1000 / HZ
: -1)
257 tp_assign(moved
, moved
)
259 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
260 TP_printk("bdi %s: enqueue=%d",
265 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
267 __entry
->older
, /* older_than_this in jiffies */
268 __entry
->age
, /* older_than_this in relative milliseconds */
274 TRACE_EVENT_MAP(global_dirty_state
,
276 writeback_global_dirty_state
,
278 TP_PROTO(unsigned long background_thresh
,
279 unsigned long dirty_thresh
282 TP_ARGS(background_thresh
,
287 __field(unsigned long, nr_dirty
)
288 __field(unsigned long, nr_writeback
)
289 __field(unsigned long, nr_unstable
)
290 __field(unsigned long, background_thresh
)
291 __field(unsigned long, dirty_thresh
)
292 __field(unsigned long, dirty_limit
)
293 __field(unsigned long, nr_dirtied
)
294 __field(unsigned long, nr_written
)
298 tp_assign(nr_dirty
, global_page_state(NR_FILE_DIRTY
))
299 tp_assign(nr_writeback
, global_page_state(NR_WRITEBACK
))
300 tp_assign(nr_unstable
, global_page_state(NR_UNSTABLE_NFS
))
301 tp_assign(nr_dirtied
, global_page_state(NR_DIRTIED
))
302 tp_assign(nr_written
, global_page_state(NR_WRITTEN
))
303 tp_assign(background_thresh
, background_thresh
)
304 tp_assign(dirty_thresh
, dirty_thresh
)
305 tp_assign(dirty_limit
, global_dirty_limit
)
308 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
309 "bg_thresh=%lu thresh=%lu limit=%lu "
310 "dirtied=%lu written=%lu",
312 __entry
->nr_writeback
,
313 __entry
->nr_unstable
,
314 __entry
->background_thresh
,
315 __entry
->dirty_thresh
,
316 __entry
->dirty_limit
,
323 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
325 #define KBps(x) ((x) << (PAGE_SHIFT - 10))
327 TRACE_EVENT_MAP(bdi_dirty_ratelimit
,
329 writeback_bdi_dirty_ratelimit
,
331 TP_PROTO(struct backing_dev_info
*bdi
,
332 unsigned long dirty_rate
,
333 unsigned long task_ratelimit
),
335 TP_ARGS(bdi
, dirty_rate
, task_ratelimit
),
338 __array(char, bdi
, 32)
339 __field(unsigned long, write_bw
)
340 __field(unsigned long, avg_write_bw
)
341 __field(unsigned long, dirty_rate
)
342 __field(unsigned long, dirty_ratelimit
)
343 __field(unsigned long, task_ratelimit
)
344 __field(unsigned long, balanced_dirty_ratelimit
)
348 tp_memcpy(bdi
, dev_name(bdi
->dev
), 32)
349 tp_assign(write_bw
, KBps(bdi
->write_bandwidth
))
350 tp_assign(avg_write_bw
, KBps(bdi
->avg_write_bandwidth
))
351 tp_assign(dirty_rate
, KBps(dirty_rate
))
352 tp_assign(dirty_ratelimit
, KBps(bdi
->dirty_ratelimit
))
353 tp_assign(task_ratelimit
, KBps(task_ratelimit
))
354 tp_assign(balanced_dirty_ratelimit
,
355 KBps(bdi
->balanced_dirty_ratelimit
))
359 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
360 "dirty_ratelimit=%lu task_ratelimit=%lu "
361 "balanced_dirty_ratelimit=%lu",
363 __entry
->write_bw
, /* write bandwidth */
364 __entry
->avg_write_bw
, /* avg write bandwidth */
365 __entry
->dirty_rate
, /* bdi dirty rate */
366 __entry
->dirty_ratelimit
, /* base ratelimit */
367 __entry
->task_ratelimit
, /* ratelimit with position control */
368 __entry
->balanced_dirty_ratelimit
/* the balanced ratelimit */
372 TRACE_EVENT_MAP(balance_dirty_pages
,
374 writeback_balance_dirty_pages
,
376 TP_PROTO(struct backing_dev_info
*bdi
,
377 unsigned long thresh
,
378 unsigned long bg_thresh
,
380 unsigned long bdi_thresh
,
381 unsigned long bdi_dirty
,
382 unsigned long dirty_ratelimit
,
383 unsigned long task_ratelimit
,
384 unsigned long dirtied
,
385 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
386 unsigned long period
,
389 unsigned long start_time
),
391 TP_ARGS(bdi
, thresh
, bg_thresh
, dirty
, bdi_thresh
, bdi_dirty
,
392 dirty_ratelimit
, task_ratelimit
,
393 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
394 dirtied
, period
, pause
, start_time
),
396 dirtied
, pause
, start_time
),
399 __array( char, bdi
, 32)
400 __field(unsigned long, limit
)
401 __field(unsigned long, setpoint
)
402 __field(unsigned long, dirty
)
403 __field(unsigned long, bdi_setpoint
)
404 __field(unsigned long, bdi_dirty
)
405 __field(unsigned long, dirty_ratelimit
)
406 __field(unsigned long, task_ratelimit
)
407 __field(unsigned int, dirtied
)
408 __field(unsigned int, dirtied_pause
)
409 __field(unsigned long, paused
)
410 __field( long, pause
)
411 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
412 __field(unsigned long, period
)
413 __field( long, think
)
418 tp_memcpy(bdi
, dev_name(bdi
->dev
), 32)
419 tp_assign(limit
, global_dirty_limit
)
421 (global_dirty_limit
+ (thresh
+ bg_thresh
) / 2) / 2)
422 tp_assign(dirty
, dirty
)
423 tp_assign(bdi_setpoint
,
424 ((global_dirty_limit
+ (thresh
+ bg_thresh
) / 2) / 2) *
425 bdi_thresh
/ (thresh
+ 1))
426 tp_assign(bdi_dirty
, bdi_dirty
)
427 tp_assign(dirty_ratelimit
, KBps(dirty_ratelimit
))
428 tp_assign(task_ratelimit
, KBps(task_ratelimit
))
429 tp_assign(dirtied
, dirtied
)
430 tp_assign(dirtied_pause
, current
->nr_dirtied_pause
)
431 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
432 tp_assign(think
, current
->dirty_paused_when
== 0 ? 0 :
433 (long)(jiffies
- current
->dirty_paused_when
) * 1000/HZ
)
434 tp_assign(period
, period
* 1000 / HZ
)
436 tp_assign(pause
, pause
* 1000 / HZ
)
437 tp_assign(paused
, (jiffies
- start_time
) * 1000 / HZ
)
441 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
443 "limit=%lu setpoint=%lu dirty=%lu "
444 "bdi_setpoint=%lu bdi_dirty=%lu "
445 "dirty_ratelimit=%lu task_ratelimit=%lu "
446 "dirtied=%u dirtied_pause=%u "
447 "paused=%lu pause=%ld period=%lu think=%ld",
452 __entry
->bdi_setpoint
,
454 __entry
->dirty_ratelimit
,
455 __entry
->task_ratelimit
,
457 __entry
->dirtied_pause
,
458 __entry
->paused
, /* ms */
459 __entry
->pause
, /* ms */
460 __entry
->period
, /* ms */
461 __entry
->think
/* ms */
465 "limit=%lu setpoint=%lu dirty=%lu "
466 "bdi_setpoint=%lu bdi_dirty=%lu "
467 "dirty_ratelimit=%lu task_ratelimit=%lu "
468 "dirtied=%u dirtied_pause=%u "
469 "paused=%lu pause=%ld",
474 __entry
->bdi_setpoint
,
476 __entry
->dirty_ratelimit
,
477 __entry
->task_ratelimit
,
479 __entry
->dirtied_pause
,
480 __entry
->paused
, /* ms */
481 __entry
->pause
/* ms */
487 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
488 TRACE_EVENT(writeback_sb_inodes_requeue
,
490 TP_PROTO(struct inode
*inode
),
494 __array(char, name
, 32)
495 __field(unsigned long, ino
)
496 __field(unsigned long, state
)
497 __field(unsigned long, dirtied_when
)
501 tp_memcpy(name
, dev_name(inode_to_bdi(inode
)->dev
), 32)
502 tp_assign(ino
, inode
->i_ino
)
503 tp_assign(state
, inode
->i_state
)
504 tp_assign(dirtied_when
, inode
->dirtied_when
)
507 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
510 show_inode_state(__entry
->state
),
511 __entry
->dirtied_when
,
512 (jiffies
- __entry
->dirtied_when
) / HZ
517 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
518 DECLARE_EVENT_CLASS(writeback_congest_waited_template
,
520 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
522 TP_ARGS(usec_timeout
, usec_delayed
),
525 __field( unsigned int, usec_timeout
)
526 __field( unsigned int, usec_delayed
)
530 tp_assign(usec_timeout
, usec_timeout
)
531 tp_assign(usec_delayed
, usec_delayed
)
534 TP_printk("usec_timeout=%u usec_delayed=%u",
535 __entry
->usec_timeout
,
536 __entry
->usec_delayed
)
539 DEFINE_EVENT(writeback_congest_waited_template
, writeback_congestion_wait
,
541 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
543 TP_ARGS(usec_timeout
, usec_delayed
)
546 DEFINE_EVENT(writeback_congest_waited_template
, writeback_wait_iff_congested
,
548 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
550 TP_ARGS(usec_timeout
, usec_delayed
)
554 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
555 DECLARE_EVENT_CLASS(writeback_single_inode_template
,
557 TP_PROTO(struct inode
*inode
,
558 struct writeback_control
*wbc
,
559 unsigned long nr_to_write
562 TP_ARGS(inode
, wbc
, nr_to_write
),
565 __array(char, name
, 32)
566 __field(unsigned long, ino
)
567 __field(unsigned long, state
)
568 __field(unsigned long, dirtied_when
)
569 __field(unsigned long, writeback_index
)
570 __field(long, nr_to_write
)
571 __field(unsigned long, wrote
)
575 tp_memcpy(name
, dev_name(inode_to_bdi(inode
)->dev
), 32)
576 tp_assign(ino
, inode
->i_ino
)
577 tp_assign(state
, inode
->i_state
)
578 tp_assign(dirtied_when
, inode
->dirtied_when
)
579 tp_assign(writeback_index
, inode
->i_mapping
->writeback_index
)
580 tp_assign(nr_to_write
, nr_to_write
)
581 tp_assign(wrote
, nr_to_write
- wbc
->nr_to_write
)
584 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
585 "index=%lu to_write=%ld wrote=%lu",
588 show_inode_state(__entry
->state
),
589 __entry
->dirtied_when
,
590 (jiffies
- __entry
->dirtied_when
) / HZ
,
591 __entry
->writeback_index
,
592 __entry
->nr_to_write
,
597 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
598 DEFINE_EVENT(writeback_single_inode_template
, writeback_single_inode_requeue
,
599 TP_PROTO(struct inode
*inode
,
600 struct writeback_control
*wbc
,
601 unsigned long nr_to_write
),
602 TP_ARGS(inode
, wbc
, nr_to_write
)
606 DEFINE_EVENT(writeback_single_inode_template
, writeback_single_inode
,
607 TP_PROTO(struct inode
*inode
,
608 struct writeback_control
*wbc
,
609 unsigned long nr_to_write
),
610 TP_ARGS(inode
, wbc
, nr_to_write
)
614 #endif /* _TRACE_WRITEBACK_H */
616 /* This part must be outside protection */
617 #include "../../../probes/define_trace.h"