aboutsummaryrefslogtreecommitdiffstats
path: root/include/trace/events/writeback.h
blob: 4e249b927eaa8092f15f452cc9f14eaa909aa164 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
#undef TRACE_SYSTEM
#define TRACE_SYSTEM writeback

#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_WRITEBACK_H

#include <linux/backing-dev.h>
#include <linux/device.h>
#include <linux/writeback.h>

struct wb_writeback_work;

DECLARE_EVENT_CLASS(writeback_work_class,
	TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
	TP_ARGS(bdi, work),
	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(long, nr_pages)
		__field(dev_t, sb_dev)
		__field(int, sync_mode)
		__field(int, for_kupdate)
		__field(int, range_cyclic)
		__field(int, for_background)
	),
	TP_fast_assign(
		strncpy(__entry->name, dev_name(bdi->dev), 32);
		__entry->nr_pages = work->nr_pages;
		__entry->sb_dev = work->sb ? work->sb->s_dev : 0;
		__entry->sync_mode = work->sync_mode;
		__entry->for_kupdate = work->for_kupdate;
		__entry->range_cyclic = work->range_cyclic;
		__entry->for_background	= work->for_background;
	),
	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
		  "kupdate=%d range_cyclic=%d background=%d",
		  __entry->name,
		  MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
		  __entry->nr_pages,
		  __entry->sync_mode,
		  __entry->for_kupdate,
		  __entry->range_cyclic,
		  __entry->for_background
	)
);
#define DEFINE_WRITEBACK_WORK_EVENT(name) \
DEFINE_EVENT(writeback_work_class, name, \
	TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
	TP_ARGS(bdi, work))
DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread);
DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);

TRACE_EVENT(writeback_pages_written,
	TP_PROTO(long pages_written),
	TP_ARGS(pages_written),
	TP_STRUCT__entry(
		__field(long,		pages)
	),
	TP_fast_assign(
		__entry->pages		= pages_written;
	),
	TP_printk("%ld", __entry->pages)
);

DECLARE_EVENT_CLASS(writeback_class,
	TP_PROTO(struct backing_dev_info *bdi),
	TP_ARGS(bdi),
	TP_STRUCT__entry(
		__array(char, name, 32)
	),
	TP_fast_assign(
		strncpy(__entry->name, dev_name(bdi->dev), 32);
	),
	TP_printk("bdi %s",
		  __entry->name
	)
);
#define DEFINE_WRITEBACK_EVENT(name) \
DEFINE_EVENT(writeback_class, name, \
	TP_PROTO(struct backing_dev_info *bdi), \
	TP_ARGS(bdi))

DEFINE_WRITEBACK_EVENT(writeback_nowork);
DEFINE_WRITEBACK_EVENT(writeback_wake_background);
DEFINE_WRITEBACK_EVENT(writeback_wake_thread);
DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread);
DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
DEFINE_WRITEBACK_EVENT(writeback_thread_start);
DEFINE_WRITEBACK_EVENT(writeback_thread_stop);

DECLARE_EVENT_CLASS(wbc_class,
	TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
	TP_ARGS(wbc, bdi),
	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(long, nr_to_write)
		__field(long, pages_skipped)
		__field(int, sync_mode)
		__field(int, for_kupdate)
		__field(int, for_background)
		__field(int, for_reclaim)
		__field(int, range_cyclic)
		__field(int, more_io)
		__field(unsigned long, older_than_this)
		__field(long, range_start)
		__field(long, range_end)
	),

	TP_fast_assign(
		strncpy(__entry->name, dev_name(bdi->dev), 32);
		__entry->nr_to_write	= wbc->nr_to_write;
		__entry->pages_skipped	= wbc->pages_skipped;
		__entry->sync_mode	= wbc->sync_mode;
		__entry->for_kupdate	= wbc->for_kupdate;
		__entry->for_background	= wbc->for_background;
		__entry->for_reclaim	= wbc->for_reclaim;
		__entry->range_cyclic	= wbc->range_cyclic;
		__entry->more_io	= wbc->more_io;
		__entry->older_than_this = wbc->older_than_this ?
						*wbc->older_than_this : 0;
		__entry->range_start	= (long)wbc->range_start;
		__entry->range_end	= (long)wbc->range_end;
	),

	TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
		"bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
		"start=0x%lx end=0x%lx",
		__entry->name,
		__entry->nr_to_write,
		__entry->pages_skipped,
		__entry->sync_mode,
		__entry->for_kupdate,
		__entry->for_background,
		__entry->for_reclaim,
		__entry->range_cyclic,
		__entry->more_io,
		__entry->older_than_this,
		__entry->range_start,
		__entry->range_end)
)

#define DEFINE_WBC_EVENT(name) \
DEFINE_EVENT(wbc_class, name, \
	TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
	TP_ARGS(wbc, bdi))
DEFINE_WBC_EVENT(wbc_writeback_start);
DEFINE_WBC_EVENT(wbc_writeback_written);
DEFINE_WBC_EVENT(wbc_writeback_wait);
DEFINE_WBC_EVENT(wbc_balance_dirty_start);
DEFINE_WBC_EVENT(wbc_balance_dirty_written);
DEFINE_WBC_EVENT(wbc_balance_dirty_wait);
DEFINE_WBC_EVENT(wbc_writepage);

DECLARE_EVENT_CLASS(writeback_congest_waited_template,

	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

	TP_ARGS(usec_timeout, usec_delayed),

	TP_STRUCT__entry(
		__field(	unsigned int,	usec_timeout	)
		__field(	unsigned int,	usec_delayed	)
	),

	TP_fast_assign(
		__entry->usec_timeout	= usec_timeout;
		__entry->usec_delayed	= usec_delayed;
	),

	TP_printk("usec_timeout=%u usec_delayed=%u",
			__entry->usec_timeout,
			__entry->usec_delayed)
);

DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,

	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

	TP_ARGS(usec_timeout, usec_delayed)
);

DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,

	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

	TP_ARGS(usec_timeout, usec_delayed)
);

#endif /* _TRACE_WRITEBACK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>