1 /* SPDX-License-Identifier: GPL-2.0-only */
3 #define TRACE_SYSTEM writeback
5 #if !defined(LTTNG_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define LTTNG_TRACE_WRITEBACK_H
8 #include <probes/lttng-tracepoint-event.h>
9 #include <linux/tracepoint.h>
10 #include <linux/backing-dev.h>
11 #include <linux/writeback.h>
13 #ifndef _TRACE_WRITEBACK_DEF_
14 #define _TRACE_WRITEBACK_DEF_
16 static inline struct backing_dev_info
*lttng_inode_to_bdi(struct inode
*inode
)
18 return inode_to_bdi(inode
);
23 #define show_inode_state(state) \
24 __print_flags(state, "|", \
25 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
26 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
27 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
29 {I_WILL_FREE, "I_WILL_FREE"}, \
30 {I_FREEING, "I_FREEING"}, \
31 {I_CLEAR, "I_CLEAR"}, \
33 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
34 {I_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \
35 {I_REFERENCED, "I_REFERENCED"} \
38 LTTNG_TRACEPOINT_EVENT(writeback_dirty_page
,
39 TP_PROTO(struct page
*page
, struct address_space
*mapping
),
40 TP_ARGS(page
, mapping
),
42 ctf_array_text(char, name
,
43 mapping
? dev_name(lttng_inode_to_bdi(mapping
->host
)->dev
) : "(unknown)", 32)
44 ctf_integer(unsigned long, ino
, mapping
? mapping
->host
->i_ino
: 0)
45 ctf_integer(pgoff_t
, index
, page
->index
)
49 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template
,
50 TP_PROTO(struct inode
*inode
, int flags
),
51 TP_ARGS(inode
, flags
),
53 /* may be called for files on pseudo FSes w/ unregistered bdi */
54 ctf_array_text(char, name
,
55 lttng_inode_to_bdi(inode
)->dev
?
56 dev_name(lttng_inode_to_bdi(inode
)->dev
) : "(unknown)", 32)
57 ctf_integer(unsigned long, ino
, inode
->i_ino
)
58 ctf_integer(unsigned long, state
, inode
->i_state
)
59 ctf_integer(unsigned long, flags
, flags
)
62 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
63 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
64 TP_PROTO(struct inode *inode, int flags), \
65 TP_ARGS(inode, flags))
66 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start
)
67 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode
)
68 LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty
)
70 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template
,
71 TP_PROTO(struct inode
*inode
, struct writeback_control
*wbc
),
74 ctf_array_text(char, name
,
75 dev_name(lttng_inode_to_bdi(inode
)->dev
), 32)
76 ctf_integer(unsigned long, ino
, inode
->i_ino
)
77 ctf_integer(int, sync_mode
, wbc
->sync_mode
)
81 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
82 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
83 TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
85 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start
)
86 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode
)
88 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class
,
89 TP_PROTO(struct bdi_writeback
*wb
, struct wb_writeback_work
*work
),
92 ctf_array_text(char, name
, wb
->bdi
->dev
? dev_name(wb
->bdi
->dev
) :
97 #define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
98 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
99 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
102 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread
)
103 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue
)
104 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec
)
105 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start
)
106 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written
)
107 LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait
)
109 LTTNG_TRACEPOINT_EVENT(writeback_pages_written
,
110 TP_PROTO(long pages_written
),
111 TP_ARGS(pages_written
),
113 ctf_integer(long, pages
, pages_written
)
117 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class
,
118 TP_PROTO(struct bdi_writeback
*wb
),
121 ctf_array_text(char, name
,
122 dev_name(wb
->bdi
->dev
), 32)
126 #undef DEFINE_WRITEBACK_EVENT
127 #define DEFINE_WRITEBACK_EVENT(name) \
128 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
129 TP_PROTO(struct bdi_writeback *wb), \
132 #define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
133 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
134 TP_PROTO(struct bdi_writeback *wb), \
137 LTTNG_TRACEPOINT_EVENT(writeback_bdi_register
,
138 TP_PROTO(struct backing_dev_info
*bdi
),
141 ctf_array_text(char, name
,
142 dev_name(bdi
->dev
), 32)
146 DEFINE_WRITEBACK_EVENT(writeback_nowork
)
147 DEFINE_WRITEBACK_EVENT(writeback_wake_background
)
148 DEFINE_WRITEBACK_EVENT(writeback_wake_thread
)
149 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread
)
150 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister
)
151 DEFINE_WRITEBACK_EVENT(writeback_thread_start
)
152 DEFINE_WRITEBACK_EVENT(writeback_thread_stop
)
154 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class
,
155 TP_PROTO(struct writeback_control
*wbc
, struct backing_dev_info
*bdi
),
158 ctf_array_text(char, name
, dev_name(bdi
->dev
), 32)
159 ctf_integer(long, nr_to_write
, wbc
->nr_to_write
)
160 ctf_integer(long, pages_skipped
, wbc
->pages_skipped
)
161 ctf_integer(int, sync_mode
, wbc
->sync_mode
)
162 ctf_integer(int, for_kupdate
, wbc
->for_kupdate
)
163 ctf_integer(int, for_background
, wbc
->for_background
)
164 ctf_integer(int, for_reclaim
, wbc
->for_reclaim
)
165 ctf_integer(int, range_cyclic
, wbc
->range_cyclic
)
166 ctf_integer(long, range_start
, (long) wbc
->range_start
)
167 ctf_integer(long, range_end
, (long) wbc
->range_end
)
171 #undef DEFINE_WBC_EVENT
172 #define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
173 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
174 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
176 LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage
, writeback_wbc_writepage
)
178 LTTNG_TRACEPOINT_EVENT(writeback_queue_io
,
179 TP_PROTO(struct bdi_writeback
*wb
,
180 struct wb_writeback_work
*work
,
182 TP_ARGS(wb
, work
, moved
),
184 ctf_array_text(char, name
, dev_name(wb
->bdi
->dev
), 32)
185 ctf_integer(int, moved
, moved
)
189 LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state
,
191 writeback_global_dirty_state
,
193 TP_PROTO(struct wb_domain
*domain
,
194 unsigned long background_thresh
,
195 unsigned long dirty_thresh
204 ctf_integer(unsigned long, nr_dirty
, global_node_page_state(NR_FILE_DIRTY
))
205 ctf_integer(unsigned long, nr_writeback
, global_node_page_state(NR_WRITEBACK
))
206 ctf_integer(unsigned long, nr_unstable
, global_node_page_state(NR_UNSTABLE_NFS
))
207 ctf_integer(unsigned long, nr_dirtied
, global_node_page_state(NR_DIRTIED
))
208 ctf_integer(unsigned long, nr_written
, global_node_page_state(NR_WRITTEN
))
209 ctf_integer(unsigned long, background_thresh
, background_thresh
)
210 ctf_integer(unsigned long, dirty_thresh
, dirty_thresh
)
211 ctf_integer(unsigned long, dirty_limit
, domain
->dirty_limit
)
215 #define KBps(x) ((x) << (PAGE_SHIFT - 10))
217 LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit
,
219 writeback_bdi_dirty_ratelimit
,
221 TP_PROTO(struct bdi_writeback
*wb
,
222 unsigned long dirty_rate
,
223 unsigned long task_ratelimit
),
225 TP_ARGS(wb
, dirty_rate
, task_ratelimit
),
228 ctf_array_text(char, bdi
, dev_name(wb
->bdi
->dev
), 32)
229 ctf_integer(unsigned long, write_bw
, KBps(wb
->bdi
->wb
.write_bandwidth
))
230 ctf_integer(unsigned long, avg_write_bw
, KBps(wb
->bdi
->wb
.avg_write_bandwidth
))
231 ctf_integer(unsigned long, dirty_rate
, KBps(dirty_rate
))
232 ctf_integer(unsigned long, dirty_ratelimit
, KBps(wb
->bdi
->wb
.dirty_ratelimit
))
233 ctf_integer(unsigned long, task_ratelimit
, KBps(task_ratelimit
))
234 ctf_integer(unsigned long, balanced_dirty_ratelimit
,
235 KBps(wb
->bdi
->wb
.balanced_dirty_ratelimit
))
239 LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages
,
241 writeback_balance_dirty_pages
,
243 TP_PROTO(struct wb_domain
*domain
,
244 struct bdi_writeback
*wb
,
245 struct dirty_throttle_control
*sdtc
,
246 unsigned long dirty_ratelimit
,
247 unsigned long task_ratelimit
,
248 unsigned long dirtied
,
249 unsigned long period
,
251 unsigned long start_time
),
253 TP_ARGS(domain
, wb
, sdtc
,
254 dirty_ratelimit
, task_ratelimit
,
255 dirtied
, period
, pause
, start_time
259 ctf_array_text(char, bdi
, dev_name(wb
->bdi
->dev
), 32)
260 ctf_integer(unsigned long, limit
, domain
->dirty_limit
)
261 ctf_integer(unsigned long, setpoint
,
262 (domain
->dirty_limit
+ (sdtc
->thresh
+ sdtc
->bg_thresh
) / 2) / 2)
263 ctf_integer(unsigned long, dirty
, sdtc
->dirty
)
264 ctf_integer(unsigned long, bdi_setpoint
,
265 ((domain
->dirty_limit
+ (sdtc
->thresh
+ sdtc
->bg_thresh
) / 2) / 2) *
266 sdtc
->wb_thresh
/ (sdtc
->thresh
+ 1))
267 ctf_integer(unsigned long, bdi_dirty
, sdtc
->wb_dirty
)
268 ctf_integer(unsigned long, dirty_ratelimit
,
269 KBps(dirty_ratelimit
))
270 ctf_integer(unsigned long, task_ratelimit
,
271 KBps(task_ratelimit
))
272 ctf_integer(unsigned int, dirtied
, dirtied
)
273 ctf_integer(unsigned int, dirtied_pause
,
274 current
->nr_dirtied_pause
)
275 ctf_integer(unsigned long, paused
,
276 (jiffies
- start_time
) * 1000 / HZ
)
277 ctf_integer(long, pause
, pause
* 1000 / HZ
)
278 ctf_integer(unsigned long, period
,
280 ctf_integer(long, think
,
281 current
->dirty_paused_when
== 0 ? 0 :
282 (long)(jiffies
- current
->dirty_paused_when
) * 1000/HZ
)
286 LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue
,
288 TP_PROTO(struct inode
*inode
),
292 ctf_array_text(char, name
,
293 dev_name(lttng_inode_to_bdi(inode
)->dev
), 32)
294 ctf_integer(unsigned long, ino
, inode
->i_ino
)
295 ctf_integer(unsigned long, state
, inode
->i_state
)
296 ctf_integer(unsigned long, dirtied_when
, inode
->dirtied_when
)
300 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template
,
302 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
304 TP_ARGS(usec_timeout
, usec_delayed
),
307 ctf_integer(unsigned int, usec_timeout
, usec_timeout
)
308 ctf_integer(unsigned int, usec_delayed
, usec_delayed
)
312 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template
, writeback_congestion_wait
,
314 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
316 TP_ARGS(usec_timeout
, usec_delayed
)
319 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template
, writeback_wait_iff_congested
,
321 TP_PROTO(unsigned int usec_timeout
, unsigned int usec_delayed
),
323 TP_ARGS(usec_timeout
, usec_delayed
)
326 LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template
,
328 TP_PROTO(struct inode
*inode
,
329 struct writeback_control
*wbc
,
330 unsigned long nr_to_write
333 TP_ARGS(inode
, wbc
, nr_to_write
),
336 ctf_array_text(char, name
,
337 dev_name(lttng_inode_to_bdi(inode
)->dev
), 32)
338 ctf_integer(unsigned long, ino
, inode
->i_ino
)
339 ctf_integer(unsigned long, state
, inode
->i_state
)
340 ctf_integer(unsigned long, dirtied_when
, inode
->dirtied_when
)
341 ctf_integer(unsigned long, writeback_index
,
342 inode
->i_mapping
->writeback_index
)
343 ctf_integer(long, nr_to_write
, nr_to_write
)
344 ctf_integer(unsigned long, wrote
,
345 nr_to_write
- wbc
->nr_to_write
)
349 LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template
, writeback_single_inode
,
350 TP_PROTO(struct inode
*inode
,
351 struct writeback_control
*wbc
,
352 unsigned long nr_to_write
),
353 TP_ARGS(inode
, wbc
, nr_to_write
)
356 #endif /* LTTNG_TRACE_WRITEBACK_H */
358 /* This part must be outside protection */
359 #include <probes/define_trace.h>