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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/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM writeback
4
5#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_WRITEBACK_H
7
8#include <linux/tracepoint.h>
9#include <linux/backing-dev.h>
10#include <linux/writeback.h>
11
12#define show_inode_state(state) \
13 __print_flags(state, "|", \
14 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
15 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
16 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
17 {I_NEW, "I_NEW"}, \
18 {I_WILL_FREE, "I_WILL_FREE"}, \
19 {I_FREEING, "I_FREEING"}, \
20 {I_CLEAR, "I_CLEAR"}, \
21 {I_SYNC, "I_SYNC"}, \
22 {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
23 {I_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \
24 {I_REFERENCED, "I_REFERENCED"} \
25 )
26
27/* enums need to be exported to user space */
28#undef EM
29#undef EMe
30#define EM(a,b) TRACE_DEFINE_ENUM(a);
31#define EMe(a,b) TRACE_DEFINE_ENUM(a);
32
33#define WB_WORK_REASON \
34 EM( WB_REASON_BACKGROUND, "background") \
35 EM( WB_REASON_VMSCAN, "vmscan") \
36 EM( WB_REASON_SYNC, "sync") \
37 EM( WB_REASON_PERIODIC, "periodic") \
38 EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
39 EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
40 EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
41 EMe(WB_REASON_FORKER_THREAD, "forker_thread")
42
43WB_WORK_REASON
44
45/*
46 * Now redefine the EM() and EMe() macros to map the enums to the strings
47 * that will be printed in the output.
48 */
49#undef EM
50#undef EMe
51#define EM(a,b) { a, b },
52#define EMe(a,b) { a, b }
53
54struct wb_writeback_work;
55
56TRACE_EVENT(writeback_dirty_page,
57
58 TP_PROTO(struct page *page, struct address_space *mapping),
59
60 TP_ARGS(page, mapping),
61
62 TP_STRUCT__entry (
63 __array(char, name, 32)
64 __field(unsigned long, ino)
65 __field(pgoff_t, index)
66 ),
67
68 TP_fast_assign(
69 strncpy(__entry->name,
70 mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32);
71 __entry->ino = mapping ? mapping->host->i_ino : 0;
72 __entry->index = page->index;
73 ),
74
75 TP_printk("bdi %s: ino=%lu index=%lu",
76 __entry->name,
77 __entry->ino,
78 __entry->index
79 )
80);
81
82DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
83
84 TP_PROTO(struct inode *inode, int flags),
85
86 TP_ARGS(inode, flags),
87
88 TP_STRUCT__entry (
89 __array(char, name, 32)
90 __field(unsigned long, ino)
91 __field(unsigned long, state)
92 __field(unsigned long, flags)
93 ),
94
95 TP_fast_assign(
96 struct backing_dev_info *bdi = inode_to_bdi(inode);
97
98 /* may be called for files on pseudo FSes w/ unregistered bdi */
99 strncpy(__entry->name,
100 bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
101 __entry->ino = inode->i_ino;
102 __entry->state = inode->i_state;
103 __entry->flags = flags;
104 ),
105
106 TP_printk("bdi %s: ino=%lu state=%s flags=%s",
107 __entry->name,
108 __entry->ino,
109 show_inode_state(__entry->state),
110 show_inode_state(__entry->flags)
111 )
112);
113
114DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
115
116 TP_PROTO(struct inode *inode, int flags),
117
118 TP_ARGS(inode, flags)
119);
120
121DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
122
123 TP_PROTO(struct inode *inode, int flags),
124
125 TP_ARGS(inode, flags)
126);
127
128DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,
129
130 TP_PROTO(struct inode *inode, int flags),
131
132 TP_ARGS(inode, flags)
133);
134
135#ifdef CREATE_TRACE_POINTS
136#ifdef CONFIG_CGROUP_WRITEBACK
137
138static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
139{
140 return wb->memcg_css->cgroup->kn->id.ino;
141}
142
143static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
144{
145 if (wbc->wb)
146 return __trace_wb_assign_cgroup(wbc->wb);
147 else
148 return -1U;
149}
150#else /* CONFIG_CGROUP_WRITEBACK */
151
152static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
153{
154 return -1U;
155}
156
157static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
158{
159 return -1U;
160}
161
162#endif /* CONFIG_CGROUP_WRITEBACK */
163#endif /* CREATE_TRACE_POINTS */
164
165DECLARE_EVENT_CLASS(writeback_write_inode_template,
166
167 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
168
169 TP_ARGS(inode, wbc),
170
171 TP_STRUCT__entry (
172 __array(char, name, 32)
173 __field(unsigned long, ino)
174 __field(int, sync_mode)
175 __field(unsigned int, cgroup_ino)
176 ),
177
178 TP_fast_assign(
179 strncpy(__entry->name,
180 dev_name(inode_to_bdi(inode)->dev), 32);
181 __entry->ino = inode->i_ino;
182 __entry->sync_mode = wbc->sync_mode;
183 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
184 ),
185
186 TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
187 __entry->name,
188 __entry->ino,
189 __entry->sync_mode,
190 __entry->cgroup_ino
191 )
192);
193
194DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,
195
196 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
197
198 TP_ARGS(inode, wbc)
199);
200
201DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,
202
203 TP_PROTO(struct inode *inode, struct writeback_control *wbc),
204
205 TP_ARGS(inode, wbc)
206);
207
208DECLARE_EVENT_CLASS(writeback_work_class,
209 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
210 TP_ARGS(wb, work),
211 TP_STRUCT__entry(
212 __array(char, name, 32)
213 __field(long, nr_pages)
214 __field(dev_t, sb_dev)
215 __field(int, sync_mode)
216 __field(int, for_kupdate)
217 __field(int, range_cyclic)
218 __field(int, for_background)
219 __field(int, reason)
220 __field(unsigned int, cgroup_ino)
221 ),
222 TP_fast_assign(
223 strncpy(__entry->name,
224 wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32);
225 __entry->nr_pages = work->nr_pages;
226 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
227 __entry->sync_mode = work->sync_mode;
228 __entry->for_kupdate = work->for_kupdate;
229 __entry->range_cyclic = work->range_cyclic;
230 __entry->for_background = work->for_background;
231 __entry->reason = work->reason;
232 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
233 ),
234 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
235 "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
236 __entry->name,
237 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
238 __entry->nr_pages,
239 __entry->sync_mode,
240 __entry->for_kupdate,
241 __entry->range_cyclic,
242 __entry->for_background,
243 __print_symbolic(__entry->reason, WB_WORK_REASON),
244 __entry->cgroup_ino
245 )
246);
247#define DEFINE_WRITEBACK_WORK_EVENT(name) \
248DEFINE_EVENT(writeback_work_class, name, \
249 TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
250 TP_ARGS(wb, work))
251DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
252DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
253DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
254DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
255DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);
256
257TRACE_EVENT(writeback_pages_written,
258 TP_PROTO(long pages_written),
259 TP_ARGS(pages_written),
260 TP_STRUCT__entry(
261 __field(long, pages)
262 ),
263 TP_fast_assign(
264 __entry->pages = pages_written;
265 ),
266 TP_printk("%ld", __entry->pages)
267);
268
269DECLARE_EVENT_CLASS(writeback_class,
270 TP_PROTO(struct bdi_writeback *wb),
271 TP_ARGS(wb),
272 TP_STRUCT__entry(
273 __array(char, name, 32)
274 __field(unsigned int, cgroup_ino)
275 ),
276 TP_fast_assign(
277 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
278 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
279 ),
280 TP_printk("bdi %s: cgroup_ino=%u",
281 __entry->name,
282 __entry->cgroup_ino
283 )
284);
285#define DEFINE_WRITEBACK_EVENT(name) \
286DEFINE_EVENT(writeback_class, name, \
287 TP_PROTO(struct bdi_writeback *wb), \
288 TP_ARGS(wb))
289
290DEFINE_WRITEBACK_EVENT(writeback_wake_background);
291
292TRACE_EVENT(writeback_bdi_register,
293 TP_PROTO(struct backing_dev_info *bdi),
294 TP_ARGS(bdi),
295 TP_STRUCT__entry(
296 __array(char, name, 32)
297 ),
298 TP_fast_assign(
299 strncpy(__entry->name, dev_name(bdi->dev), 32);
300 ),
301 TP_printk("bdi %s",
302 __entry->name
303 )
304);
305
306DECLARE_EVENT_CLASS(wbc_class,
307 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
308 TP_ARGS(wbc, bdi),
309 TP_STRUCT__entry(
310 __array(char, name, 32)
311 __field(long, nr_to_write)
312 __field(long, pages_skipped)
313 __field(int, sync_mode)
314 __field(int, for_kupdate)
315 __field(int, for_background)
316 __field(int, for_reclaim)
317 __field(int, range_cyclic)
318 __field(long, range_start)
319 __field(long, range_end)
320 __field(unsigned int, cgroup_ino)
321 ),
322
323 TP_fast_assign(
324 strncpy(__entry->name, dev_name(bdi->dev), 32);
325 __entry->nr_to_write = wbc->nr_to_write;
326 __entry->pages_skipped = wbc->pages_skipped;
327 __entry->sync_mode = wbc->sync_mode;
328 __entry->for_kupdate = wbc->for_kupdate;
329 __entry->for_background = wbc->for_background;
330 __entry->for_reclaim = wbc->for_reclaim;
331 __entry->range_cyclic = wbc->range_cyclic;
332 __entry->range_start = (long)wbc->range_start;
333 __entry->range_end = (long)wbc->range_end;
334 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
335 ),
336
337 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
338 "bgrd=%d reclm=%d cyclic=%d "
339 "start=0x%lx end=0x%lx cgroup_ino=%u",
340 __entry->name,
341 __entry->nr_to_write,
342 __entry->pages_skipped,
343 __entry->sync_mode,
344 __entry->for_kupdate,
345 __entry->for_background,
346 __entry->for_reclaim,
347 __entry->range_cyclic,
348 __entry->range_start,
349 __entry->range_end,
350 __entry->cgroup_ino
351 )
352)
353
354#define DEFINE_WBC_EVENT(name) \
355DEFINE_EVENT(wbc_class, name, \
356 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
357 TP_ARGS(wbc, bdi))
358DEFINE_WBC_EVENT(wbc_writepage);
359
360TRACE_EVENT(writeback_queue_io,
361 TP_PROTO(struct bdi_writeback *wb,
362 struct wb_writeback_work *work,
363 int moved),
364 TP_ARGS(wb, work, moved),
365 TP_STRUCT__entry(
366 __array(char, name, 32)
367 __field(unsigned long, older)
368 __field(long, age)
369 __field(int, moved)
370 __field(int, reason)
371 __field(unsigned int, cgroup_ino)
372 ),
373 TP_fast_assign(
374 unsigned long *older_than_this = work->older_than_this;
375 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
376 __entry->older = older_than_this ? *older_than_this : 0;
377 __entry->age = older_than_this ?
378 (jiffies - *older_than_this) * 1000 / HZ : -1;
379 __entry->moved = moved;
380 __entry->reason = work->reason;
381 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
382 ),
383 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
384 __entry->name,
385 __entry->older, /* older_than_this in jiffies */
386 __entry->age, /* older_than_this in relative milliseconds */
387 __entry->moved,
388 __print_symbolic(__entry->reason, WB_WORK_REASON),
389 __entry->cgroup_ino
390 )
391);
392
393TRACE_EVENT(global_dirty_state,
394
395 TP_PROTO(unsigned long background_thresh,
396 unsigned long dirty_thresh
397 ),
398
399 TP_ARGS(background_thresh,
400 dirty_thresh
401 ),
402
403 TP_STRUCT__entry(
404 __field(unsigned long, nr_dirty)
405 __field(unsigned long, nr_writeback)
406 __field(unsigned long, nr_unstable)
407 __field(unsigned long, background_thresh)
408 __field(unsigned long, dirty_thresh)
409 __field(unsigned long, dirty_limit)
410 __field(unsigned long, nr_dirtied)
411 __field(unsigned long, nr_written)
412 ),
413
414 TP_fast_assign(
415 __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
416 __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
417 __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS);
418 __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
419 __entry->nr_written = global_node_page_state(NR_WRITTEN);
420 __entry->background_thresh = background_thresh;
421 __entry->dirty_thresh = dirty_thresh;
422 __entry->dirty_limit = global_wb_domain.dirty_limit;
423 ),
424
425 TP_printk("dirty=%lu writeback=%lu unstable=%lu "
426 "bg_thresh=%lu thresh=%lu limit=%lu "
427 "dirtied=%lu written=%lu",
428 __entry->nr_dirty,
429 __entry->nr_writeback,
430 __entry->nr_unstable,
431 __entry->background_thresh,
432 __entry->dirty_thresh,
433 __entry->dirty_limit,
434 __entry->nr_dirtied,
435 __entry->nr_written
436 )
437);
438
439#define KBps(x) ((x) << (PAGE_SHIFT - 10))
440
441TRACE_EVENT(bdi_dirty_ratelimit,
442
443 TP_PROTO(struct bdi_writeback *wb,
444 unsigned long dirty_rate,
445 unsigned long task_ratelimit),
446
447 TP_ARGS(wb, dirty_rate, task_ratelimit),
448
449 TP_STRUCT__entry(
450 __array(char, bdi, 32)
451 __field(unsigned long, write_bw)
452 __field(unsigned long, avg_write_bw)
453 __field(unsigned long, dirty_rate)
454 __field(unsigned long, dirty_ratelimit)
455 __field(unsigned long, task_ratelimit)
456 __field(unsigned long, balanced_dirty_ratelimit)
457 __field(unsigned int, cgroup_ino)
458 ),
459
460 TP_fast_assign(
461 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
462 __entry->write_bw = KBps(wb->write_bandwidth);
463 __entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
464 __entry->dirty_rate = KBps(dirty_rate);
465 __entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
466 __entry->task_ratelimit = KBps(task_ratelimit);
467 __entry->balanced_dirty_ratelimit =
468 KBps(wb->balanced_dirty_ratelimit);
469 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
470 ),
471
472 TP_printk("bdi %s: "
473 "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
474 "dirty_ratelimit=%lu task_ratelimit=%lu "
475 "balanced_dirty_ratelimit=%lu cgroup_ino=%u",
476 __entry->bdi,
477 __entry->write_bw, /* write bandwidth */
478 __entry->avg_write_bw, /* avg write bandwidth */
479 __entry->dirty_rate, /* bdi dirty rate */
480 __entry->dirty_ratelimit, /* base ratelimit */
481 __entry->task_ratelimit, /* ratelimit with position control */
482 __entry->balanced_dirty_ratelimit, /* the balanced ratelimit */
483 __entry->cgroup_ino
484 )
485);
486
487TRACE_EVENT(balance_dirty_pages,
488
489 TP_PROTO(struct bdi_writeback *wb,
490 unsigned long thresh,
491 unsigned long bg_thresh,
492 unsigned long dirty,
493 unsigned long bdi_thresh,
494 unsigned long bdi_dirty,
495 unsigned long dirty_ratelimit,
496 unsigned long task_ratelimit,
497 unsigned long dirtied,
498 unsigned long period,
499 long pause,
500 unsigned long start_time),
501
502 TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
503 dirty_ratelimit, task_ratelimit,
504 dirtied, period, pause, start_time),
505
506 TP_STRUCT__entry(
507 __array( char, bdi, 32)
508 __field(unsigned long, limit)
509 __field(unsigned long, setpoint)
510 __field(unsigned long, dirty)
511 __field(unsigned long, bdi_setpoint)
512 __field(unsigned long, bdi_dirty)
513 __field(unsigned long, dirty_ratelimit)
514 __field(unsigned long, task_ratelimit)
515 __field(unsigned int, dirtied)
516 __field(unsigned int, dirtied_pause)
517 __field(unsigned long, paused)
518 __field( long, pause)
519 __field(unsigned long, period)
520 __field( long, think)
521 __field(unsigned int, cgroup_ino)
522 ),
523
524 TP_fast_assign(
525 unsigned long freerun = (thresh + bg_thresh) / 2;
526 strlcpy(__entry->bdi, dev_name(wb->bdi->dev), 32);
527
528 __entry->limit = global_wb_domain.dirty_limit;
529 __entry->setpoint = (global_wb_domain.dirty_limit +
530 freerun) / 2;
531 __entry->dirty = dirty;
532 __entry->bdi_setpoint = __entry->setpoint *
533 bdi_thresh / (thresh + 1);
534 __entry->bdi_dirty = bdi_dirty;
535 __entry->dirty_ratelimit = KBps(dirty_ratelimit);
536 __entry->task_ratelimit = KBps(task_ratelimit);
537 __entry->dirtied = dirtied;
538 __entry->dirtied_pause = current->nr_dirtied_pause;
539 __entry->think = current->dirty_paused_when == 0 ? 0 :
540 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
541 __entry->period = period * 1000 / HZ;
542 __entry->pause = pause * 1000 / HZ;
543 __entry->paused = (jiffies - start_time) * 1000 / HZ;
544 __entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
545 ),
546
547
548 TP_printk("bdi %s: "
549 "limit=%lu setpoint=%lu dirty=%lu "
550 "bdi_setpoint=%lu bdi_dirty=%lu "
551 "dirty_ratelimit=%lu task_ratelimit=%lu "
552 "dirtied=%u dirtied_pause=%u "
553 "paused=%lu pause=%ld period=%lu think=%ld cgroup_ino=%u",
554 __entry->bdi,
555 __entry->limit,
556 __entry->setpoint,
557 __entry->dirty,
558 __entry->bdi_setpoint,
559 __entry->bdi_dirty,
560 __entry->dirty_ratelimit,
561 __entry->task_ratelimit,
562 __entry->dirtied,
563 __entry->dirtied_pause,
564 __entry->paused, /* ms */
565 __entry->pause, /* ms */
566 __entry->period, /* ms */
567 __entry->think, /* ms */
568 __entry->cgroup_ino
569 )
570);
571
572TRACE_EVENT(writeback_sb_inodes_requeue,
573
574 TP_PROTO(struct inode *inode),
575 TP_ARGS(inode),
576
577 TP_STRUCT__entry(
578 __array(char, name, 32)
579 __field(unsigned long, ino)
580 __field(unsigned long, state)
581 __field(unsigned long, dirtied_when)
582 __field(unsigned int, cgroup_ino)
583 ),
584
585 TP_fast_assign(
586 strncpy(__entry->name,
587 dev_name(inode_to_bdi(inode)->dev), 32);
588 __entry->ino = inode->i_ino;
589 __entry->state = inode->i_state;
590 __entry->dirtied_when = inode->dirtied_when;
591 __entry->cgroup_ino = __trace_wb_assign_cgroup(inode_to_wb(inode));
592 ),
593
594 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu cgroup_ino=%u",
595 __entry->name,
596 __entry->ino,
597 show_inode_state(__entry->state),
598 __entry->dirtied_when,
599 (jiffies - __entry->dirtied_when) / HZ,
600 __entry->cgroup_ino
601 )
602);
603
604DECLARE_EVENT_CLASS(writeback_congest_waited_template,
605
606 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
607
608 TP_ARGS(usec_timeout, usec_delayed),
609
610 TP_STRUCT__entry(
611 __field( unsigned int, usec_timeout )
612 __field( unsigned int, usec_delayed )
613 ),
614
615 TP_fast_assign(
616 __entry->usec_timeout = usec_timeout;
617 __entry->usec_delayed = usec_delayed;
618 ),
619
620 TP_printk("usec_timeout=%u usec_delayed=%u",
621 __entry->usec_timeout,
622 __entry->usec_delayed)
623);
624
625DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
626
627 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
628
629 TP_ARGS(usec_timeout, usec_delayed)
630);
631
632DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
633
634 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
635
636 TP_ARGS(usec_timeout, usec_delayed)
637);
638
639DECLARE_EVENT_CLASS(writeback_single_inode_template,
640
641 TP_PROTO(struct inode *inode,
642 struct writeback_control *wbc,
643 unsigned long nr_to_write
644 ),
645
646 TP_ARGS(inode, wbc, nr_to_write),
647
648 TP_STRUCT__entry(
649 __array(char, name, 32)
650 __field(unsigned long, ino)
651 __field(unsigned long, state)
652 __field(unsigned long, dirtied_when)
653 __field(unsigned long, writeback_index)
654 __field(long, nr_to_write)
655 __field(unsigned long, wrote)
656 __field(unsigned int, cgroup_ino)
657 ),
658
659 TP_fast_assign(
660 strncpy(__entry->name,
661 dev_name(inode_to_bdi(inode)->dev), 32);
662 __entry->ino = inode->i_ino;
663 __entry->state = inode->i_state;
664 __entry->dirtied_when = inode->dirtied_when;
665 __entry->writeback_index = inode->i_mapping->writeback_index;
666 __entry->nr_to_write = nr_to_write;
667 __entry->wrote = nr_to_write - wbc->nr_to_write;
668 __entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
669 ),
670
671 TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
672 "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
673 __entry->name,
674 __entry->ino,
675 show_inode_state(__entry->state),
676 __entry->dirtied_when,
677 (jiffies - __entry->dirtied_when) / HZ,
678 __entry->writeback_index,
679 __entry->nr_to_write,
680 __entry->wrote,
681 __entry->cgroup_ino
682 )
683);
684
685DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
686 TP_PROTO(struct inode *inode,
687 struct writeback_control *wbc,
688 unsigned long nr_to_write),
689 TP_ARGS(inode, wbc, nr_to_write)
690);
691
692DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
693 TP_PROTO(struct inode *inode,
694 struct writeback_control *wbc,
695 unsigned long nr_to_write),
696 TP_ARGS(inode, wbc, nr_to_write)
697);
698
699DECLARE_EVENT_CLASS(writeback_inode_template,
700 TP_PROTO(struct inode *inode),
701
702 TP_ARGS(inode),
703
704 TP_STRUCT__entry(
705 __field( dev_t, dev )
706 __field(unsigned long, ino )
707 __field(unsigned long, state )
708 __field( __u16, mode )
709 __field(unsigned long, dirtied_when )
710 ),
711
712 TP_fast_assign(
713 __entry->dev = inode->i_sb->s_dev;
714 __entry->ino = inode->i_ino;
715 __entry->state = inode->i_state;
716 __entry->mode = inode->i_mode;
717 __entry->dirtied_when = inode->dirtied_when;
718 ),
719
720 TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
721 MAJOR(__entry->dev), MINOR(__entry->dev),
722 __entry->ino, __entry->dirtied_when,
723 show_inode_state(__entry->state), __entry->mode)
724);
725
726DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
727 TP_PROTO(struct inode *inode),
728
729 TP_ARGS(inode)
730);
731
732DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
733 TP_PROTO(struct inode *inode),
734
735 TP_ARGS(inode)
736);
737
738DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,
739
740 TP_PROTO(struct inode *inode),
741
742 TP_ARGS(inode)
743);
744
745/*
746 * Inode writeback list tracking.
747 */
748
749DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
750 TP_PROTO(struct inode *inode),
751 TP_ARGS(inode)
752);
753
754DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
755 TP_PROTO(struct inode *inode),
756 TP_ARGS(inode)
757);
758
759#endif /* _TRACE_WRITEBACK_H */
760
761/* This part must be outside protection */
762#include <trace/define_trace.h>