writeback: Initial tracing support
[deliverable/linux.git] / include / trace / events / writeback.h
CommitLineData
455b2864
DC
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/writeback.h>
9
10struct wb_writeback_work;
11
12DECLARE_EVENT_CLASS(writeback_work_class,
13 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
14 TP_ARGS(bdi, work),
15 TP_STRUCT__entry(
16 __array(char, name, 32)
17 __field(long, nr_pages)
18 __field(dev_t, sb_dev)
19 __field(int, sync_mode)
20 __field(int, for_kupdate)
21 __field(int, range_cyclic)
22 __field(int, for_background)
23 ),
24 TP_fast_assign(
25 strncpy(__entry->name, dev_name(bdi->dev), 32);
26 __entry->nr_pages = work->nr_pages;
27 __entry->sb_dev = work->sb ? work->sb->s_dev : 0;
28 __entry->sync_mode = work->sync_mode;
29 __entry->for_kupdate = work->for_kupdate;
30 __entry->range_cyclic = work->range_cyclic;
31 __entry->for_background = work->for_background;
32 ),
33 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
34 "kupdate=%d range_cyclic=%d background=%d",
35 __entry->name,
36 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
37 __entry->nr_pages,
38 __entry->sync_mode,
39 __entry->for_kupdate,
40 __entry->range_cyclic,
41 __entry->for_background
42 )
43);
44#define DEFINE_WRITEBACK_WORK_EVENT(name) \
45DEFINE_EVENT(writeback_work_class, name, \
46 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
47 TP_ARGS(bdi, work))
48DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread);
49DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
50DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
51
52TRACE_EVENT(writeback_pages_written,
53 TP_PROTO(long pages_written),
54 TP_ARGS(pages_written),
55 TP_STRUCT__entry(
56 __field(long, pages)
57 ),
58 TP_fast_assign(
59 __entry->pages = pages_written;
60 ),
61 TP_printk("%ld", __entry->pages)
62);
63
64DECLARE_EVENT_CLASS(writeback_class,
65 TP_PROTO(struct backing_dev_info *bdi),
66 TP_ARGS(bdi),
67 TP_STRUCT__entry(
68 __array(char, name, 32)
69 ),
70 TP_fast_assign(
71 strncpy(__entry->name, dev_name(bdi->dev), 32);
72 ),
73 TP_printk("bdi %s",
74 __entry->name
75 )
76);
77#define DEFINE_WRITEBACK_EVENT(name) \
78DEFINE_EVENT(writeback_class, name, \
79 TP_PROTO(struct backing_dev_info *bdi), \
80 TP_ARGS(bdi))
81
82DEFINE_WRITEBACK_EVENT(writeback_nowork);
83DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
84DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
85DEFINE_WRITEBACK_EVENT(writeback_thread_start);
86DEFINE_WRITEBACK_EVENT(writeback_thread_stop);
87
88#endif /* _TRACE_WRITEBACK_H */
89
90/* This part must be outside protection */
91#include <trace/define_trace.h>
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