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1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM wbt
4
5#if !defined(_TRACE_WBT_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_WBT_H
7
8#include <linux/tracepoint.h>
9#include "../../../block/blk-wbt.h"
10
11/**
12 * wbt_stat - trace stats for blk_wb
13 * @stat: array of read/write stats
14 */
15TRACE_EVENT(wbt_stat,
16
17 TP_PROTO(struct backing_dev_info *bdi, struct blk_rq_stat *stat),
18
19 TP_ARGS(bdi, stat),
20
21 TP_STRUCT__entry(
22 __array(char, name, 32)
23 __field(s64, rmean)
24 __field(u64, rmin)
25 __field(u64, rmax)
26 __field(s64, rnr_samples)
27 __field(s64, rtime)
28 __field(s64, wmean)
29 __field(u64, wmin)
30 __field(u64, wmax)
31 __field(s64, wnr_samples)
32 __field(s64, wtime)
33 ),
34
35 TP_fast_assign(
36 strlcpy(__entry->name, bdi_dev_name(bdi),
37 ARRAY_SIZE(__entry->name));
38 __entry->rmean = stat[0].mean;
39 __entry->rmin = stat[0].min;
40 __entry->rmax = stat[0].max;
41 __entry->rnr_samples = stat[0].nr_samples;
42 __entry->wmean = stat[1].mean;
43 __entry->wmin = stat[1].min;
44 __entry->wmax = stat[1].max;
45 __entry->wnr_samples = stat[1].nr_samples;
46 ),
47
48 TP_printk("%s: rmean=%llu, rmin=%llu, rmax=%llu, rsamples=%llu, "
49 "wmean=%llu, wmin=%llu, wmax=%llu, wsamples=%llu",
50 __entry->name, __entry->rmean, __entry->rmin, __entry->rmax,
51 __entry->rnr_samples, __entry->wmean, __entry->wmin,
52 __entry->wmax, __entry->wnr_samples)
53);
54
55/**
56 * wbt_lat - trace latency event
57 * @lat: latency trigger
58 */
59TRACE_EVENT(wbt_lat,
60
61 TP_PROTO(struct backing_dev_info *bdi, unsigned long lat),
62
63 TP_ARGS(bdi, lat),
64
65 TP_STRUCT__entry(
66 __array(char, name, 32)
67 __field(unsigned long, lat)
68 ),
69
70 TP_fast_assign(
71 strlcpy(__entry->name, bdi_dev_name(bdi),
72 ARRAY_SIZE(__entry->name));
73 __entry->lat = div_u64(lat, 1000);
74 ),
75
76 TP_printk("%s: latency %lluus", __entry->name,
77 (unsigned long long) __entry->lat)
78);
79
80/**
81 * wbt_step - trace wb event step
82 * @msg: context message
83 * @step: the current scale step count
84 * @window: the current monitoring window
85 * @bg: the current background queue limit
86 * @normal: the current normal writeback limit
87 * @max: the current max throughput writeback limit
88 */
89TRACE_EVENT(wbt_step,
90
91 TP_PROTO(struct backing_dev_info *bdi, const char *msg,
92 int step, unsigned long window, unsigned int bg,
93 unsigned int normal, unsigned int max),
94
95 TP_ARGS(bdi, msg, step, window, bg, normal, max),
96
97 TP_STRUCT__entry(
98 __array(char, name, 32)
99 __field(const char *, msg)
100 __field(int, step)
101 __field(unsigned long, window)
102 __field(unsigned int, bg)
103 __field(unsigned int, normal)
104 __field(unsigned int, max)
105 ),
106
107 TP_fast_assign(
108 strlcpy(__entry->name, bdi_dev_name(bdi),
109 ARRAY_SIZE(__entry->name));
110 __entry->msg = msg;
111 __entry->step = step;
112 __entry->window = div_u64(window, 1000);
113 __entry->bg = bg;
114 __entry->normal = normal;
115 __entry->max = max;
116 ),
117
118 TP_printk("%s: %s: step=%d, window=%luus, background=%u, normal=%u, max=%u",
119 __entry->name, __entry->msg, __entry->step, __entry->window,
120 __entry->bg, __entry->normal, __entry->max)
121);
122
123/**
124 * wbt_timer - trace wb timer event
125 * @status: timer state status
126 * @step: the current scale step count
127 * @inflight: tracked writes inflight
128 */
129TRACE_EVENT(wbt_timer,
130
131 TP_PROTO(struct backing_dev_info *bdi, unsigned int status,
132 int step, unsigned int inflight),
133
134 TP_ARGS(bdi, status, step, inflight),
135
136 TP_STRUCT__entry(
137 __array(char, name, 32)
138 __field(unsigned int, status)
139 __field(int, step)
140 __field(unsigned int, inflight)
141 ),
142
143 TP_fast_assign(
144 strlcpy(__entry->name, bdi_dev_name(bdi),
145 ARRAY_SIZE(__entry->name));
146 __entry->status = status;
147 __entry->step = step;
148 __entry->inflight = inflight;
149 ),
150
151 TP_printk("%s: status=%u, step=%d, inflight=%u", __entry->name,
152 __entry->status, __entry->step, __entry->inflight)
153);
154
155#endif /* _TRACE_WBT_H */
156
157/* This part must be outside protection */
158#include <trace/define_trace.h>
1#undef TRACE_SYSTEM
2#define TRACE_SYSTEM wbt
3
4#if !defined(_TRACE_WBT_H) || defined(TRACE_HEADER_MULTI_READ)
5#define _TRACE_WBT_H
6
7#include <linux/tracepoint.h>
8#include "../../../block/blk-wbt.h"
9
10/**
11 * wbt_stat - trace stats for blk_wb
12 * @stat: array of read/write stats
13 */
14TRACE_EVENT(wbt_stat,
15
16 TP_PROTO(struct backing_dev_info *bdi, struct blk_rq_stat *stat),
17
18 TP_ARGS(bdi, stat),
19
20 TP_STRUCT__entry(
21 __array(char, name, 32)
22 __field(s64, rmean)
23 __field(u64, rmin)
24 __field(u64, rmax)
25 __field(s64, rnr_samples)
26 __field(s64, rtime)
27 __field(s64, wmean)
28 __field(u64, wmin)
29 __field(u64, wmax)
30 __field(s64, wnr_samples)
31 __field(s64, wtime)
32 ),
33
34 TP_fast_assign(
35 strncpy(__entry->name, dev_name(bdi->dev), 32);
36 __entry->rmean = stat[0].mean;
37 __entry->rmin = stat[0].min;
38 __entry->rmax = stat[0].max;
39 __entry->rnr_samples = stat[0].nr_samples;
40 __entry->wmean = stat[1].mean;
41 __entry->wmin = stat[1].min;
42 __entry->wmax = stat[1].max;
43 __entry->wnr_samples = stat[1].nr_samples;
44 ),
45
46 TP_printk("%s: rmean=%llu, rmin=%llu, rmax=%llu, rsamples=%llu, "
47 "wmean=%llu, wmin=%llu, wmax=%llu, wsamples=%llu\n",
48 __entry->name, __entry->rmean, __entry->rmin, __entry->rmax,
49 __entry->rnr_samples, __entry->wmean, __entry->wmin,
50 __entry->wmax, __entry->wnr_samples)
51);
52
53/**
54 * wbt_lat - trace latency event
55 * @lat: latency trigger
56 */
57TRACE_EVENT(wbt_lat,
58
59 TP_PROTO(struct backing_dev_info *bdi, unsigned long lat),
60
61 TP_ARGS(bdi, lat),
62
63 TP_STRUCT__entry(
64 __array(char, name, 32)
65 __field(unsigned long, lat)
66 ),
67
68 TP_fast_assign(
69 strncpy(__entry->name, dev_name(bdi->dev), 32);
70 __entry->lat = div_u64(lat, 1000);
71 ),
72
73 TP_printk("%s: latency %lluus\n", __entry->name,
74 (unsigned long long) __entry->lat)
75);
76
77/**
78 * wbt_step - trace wb event step
79 * @msg: context message
80 * @step: the current scale step count
81 * @window: the current monitoring window
82 * @bg: the current background queue limit
83 * @normal: the current normal writeback limit
84 * @max: the current max throughput writeback limit
85 */
86TRACE_EVENT(wbt_step,
87
88 TP_PROTO(struct backing_dev_info *bdi, const char *msg,
89 int step, unsigned long window, unsigned int bg,
90 unsigned int normal, unsigned int max),
91
92 TP_ARGS(bdi, msg, step, window, bg, normal, max),
93
94 TP_STRUCT__entry(
95 __array(char, name, 32)
96 __field(const char *, msg)
97 __field(int, step)
98 __field(unsigned long, window)
99 __field(unsigned int, bg)
100 __field(unsigned int, normal)
101 __field(unsigned int, max)
102 ),
103
104 TP_fast_assign(
105 strncpy(__entry->name, dev_name(bdi->dev), 32);
106 __entry->msg = msg;
107 __entry->step = step;
108 __entry->window = div_u64(window, 1000);
109 __entry->bg = bg;
110 __entry->normal = normal;
111 __entry->max = max;
112 ),
113
114 TP_printk("%s: %s: step=%d, window=%luus, background=%u, normal=%u, max=%u\n",
115 __entry->name, __entry->msg, __entry->step, __entry->window,
116 __entry->bg, __entry->normal, __entry->max)
117);
118
119/**
120 * wbt_timer - trace wb timer event
121 * @status: timer state status
122 * @step: the current scale step count
123 * @inflight: tracked writes inflight
124 */
125TRACE_EVENT(wbt_timer,
126
127 TP_PROTO(struct backing_dev_info *bdi, unsigned int status,
128 int step, unsigned int inflight),
129
130 TP_ARGS(bdi, status, step, inflight),
131
132 TP_STRUCT__entry(
133 __array(char, name, 32)
134 __field(unsigned int, status)
135 __field(int, step)
136 __field(unsigned int, inflight)
137 ),
138
139 TP_fast_assign(
140 strncpy(__entry->name, dev_name(bdi->dev), 32);
141 __entry->status = status;
142 __entry->step = step;
143 __entry->inflight = inflight;
144 ),
145
146 TP_printk("%s: status=%u, step=%d, inflight=%u\n", __entry->name,
147 __entry->status, __entry->step, __entry->inflight)
148);
149
150#endif /* _TRACE_WBT_H */
151
152/* This part must be outside protection */
153#include <trace/define_trace.h>