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