tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM osnoise
4
5#if !defined(_OSNOISE_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
6
7#ifndef _OSNOISE_TRACE_H
8#define _OSNOISE_TRACE_H
9/*
10 * osnoise sample structure definition. Used to store the statistics of a
11 * sample run.
12 */
13struct osnoise_sample {
14 u64 runtime; /* runtime */
15 u64 noise; /* noise */
16 u64 max_sample; /* max single noise sample */
17 int hw_count; /* # HW (incl. hypervisor) interference */
18 int nmi_count; /* # NMIs during this sample */
19 int irq_count; /* # IRQs during this sample */
20 int softirq_count; /* # softirqs during this sample */
21 int thread_count; /* # threads during this sample */
22};
23
24#ifdef CONFIG_TIMERLAT_TRACER
25/*
26 * timerlat sample structure definition. Used to store the statistics of
27 * a sample run.
28 */
29struct timerlat_sample {
30 u64 timer_latency; /* timer_latency */
31 unsigned int seqnum; /* unique sequence */
32 int context; /* timer context */
33};
34#endif // CONFIG_TIMERLAT_TRACER
35#endif // _OSNOISE_TRACE_H
36
37#include <linux/tracepoint.h>
38TRACE_EVENT(osnoise_sample,
39
40 TP_PROTO(struct osnoise_sample *s),
41
42 TP_ARGS(s),
43
44 TP_STRUCT__entry(
45 __field( u64, runtime )
46 __field( u64, noise )
47 __field( u64, max_sample )
48 __field( int, hw_count )
49 __field( int, irq_count )
50 __field( int, nmi_count )
51 __field( int, softirq_count )
52 __field( int, thread_count )
53 ),
54
55 TP_fast_assign(
56 __entry->runtime = s->runtime;
57 __entry->noise = s->noise;
58 __entry->max_sample = s->max_sample;
59 __entry->hw_count = s->hw_count;
60 __entry->irq_count = s->irq_count;
61 __entry->nmi_count = s->nmi_count;
62 __entry->softirq_count = s->softirq_count;
63 __entry->thread_count = s->thread_count;
64 ),
65
66 TP_printk("runtime=%llu noise=%llu max_sample=%llu hw_count=%d"
67 " irq_count=%d nmi_count=%d softirq_count=%d"
68 " thread_count=%d",
69 __entry->runtime,
70 __entry->noise,
71 __entry->max_sample,
72 __entry->hw_count,
73 __entry->irq_count,
74 __entry->nmi_count,
75 __entry->softirq_count,
76 __entry->thread_count)
77);
78
79#ifdef CONFIG_TIMERLAT_TRACER
80TRACE_EVENT(timerlat_sample,
81
82 TP_PROTO(struct timerlat_sample *s),
83
84 TP_ARGS(s),
85
86 TP_STRUCT__entry(
87 __field( u64, timer_latency )
88 __field( unsigned int, seqnum )
89 __field( int, context )
90 ),
91
92 TP_fast_assign(
93 __entry->timer_latency = s->timer_latency;
94 __entry->seqnum = s->seqnum;
95 __entry->context = s->context;
96 ),
97
98 TP_printk("timer_latency=%llu seqnum=%u context=%d",
99 __entry->timer_latency,
100 __entry->seqnum,
101 __entry->context)
102);
103#endif // CONFIG_TIMERLAT_TRACER
104
105TRACE_EVENT(thread_noise,
106
107 TP_PROTO(struct task_struct *t, u64 start, u64 duration),
108
109 TP_ARGS(t, start, duration),
110
111 TP_STRUCT__entry(
112 __array( char, comm, TASK_COMM_LEN)
113 __field( u64, start )
114 __field( u64, duration)
115 __field( pid_t, pid )
116 ),
117
118 TP_fast_assign(
119 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
120 __entry->pid = t->pid;
121 __entry->start = start;
122 __entry->duration = duration;
123 ),
124
125 TP_printk("%8s:%d start %llu.%09u duration %llu ns",
126 __entry->comm,
127 __entry->pid,
128 __print_ns_to_secs(__entry->start),
129 __print_ns_without_secs(__entry->start),
130 __entry->duration)
131);
132
133TRACE_EVENT(softirq_noise,
134
135 TP_PROTO(int vector, u64 start, u64 duration),
136
137 TP_ARGS(vector, start, duration),
138
139 TP_STRUCT__entry(
140 __field( u64, start )
141 __field( u64, duration)
142 __field( int, vector )
143 ),
144
145 TP_fast_assign(
146 __entry->vector = vector;
147 __entry->start = start;
148 __entry->duration = duration;
149 ),
150
151 TP_printk("%8s:%d start %llu.%09u duration %llu ns",
152 show_softirq_name(__entry->vector),
153 __entry->vector,
154 __print_ns_to_secs(__entry->start),
155 __print_ns_without_secs(__entry->start),
156 __entry->duration)
157);
158
159TRACE_EVENT(irq_noise,
160
161 TP_PROTO(int vector, const char *desc, u64 start, u64 duration),
162
163 TP_ARGS(vector, desc, start, duration),
164
165 TP_STRUCT__entry(
166 __field( u64, start )
167 __field( u64, duration)
168 __string( desc, desc )
169 __field( int, vector )
170
171 ),
172
173 TP_fast_assign(
174 __assign_str(desc);
175 __entry->vector = vector;
176 __entry->start = start;
177 __entry->duration = duration;
178 ),
179
180 TP_printk("%s:%d start %llu.%09u duration %llu ns",
181 __get_str(desc),
182 __entry->vector,
183 __print_ns_to_secs(__entry->start),
184 __print_ns_without_secs(__entry->start),
185 __entry->duration)
186);
187
188TRACE_EVENT(nmi_noise,
189
190 TP_PROTO(u64 start, u64 duration),
191
192 TP_ARGS(start, duration),
193
194 TP_STRUCT__entry(
195 __field( u64, start )
196 __field( u64, duration)
197 ),
198
199 TP_fast_assign(
200 __entry->start = start;
201 __entry->duration = duration;
202 ),
203
204 TP_printk("start %llu.%09u duration %llu ns",
205 __print_ns_to_secs(__entry->start),
206 __print_ns_without_secs(__entry->start),
207 __entry->duration)
208);
209
210TRACE_EVENT(sample_threshold,
211
212 TP_PROTO(u64 start, u64 duration, u64 interference),
213
214 TP_ARGS(start, duration, interference),
215
216 TP_STRUCT__entry(
217 __field( u64, start )
218 __field( u64, duration)
219 __field( u64, interference)
220 ),
221
222 TP_fast_assign(
223 __entry->start = start;
224 __entry->duration = duration;
225 __entry->interference = interference;
226 ),
227
228 TP_printk("start %llu.%09u duration %llu ns interference %llu",
229 __print_ns_to_secs(__entry->start),
230 __print_ns_without_secs(__entry->start),
231 __entry->duration,
232 __entry->interference)
233);
234
235#endif /* _TRACE_OSNOISE_H */
236
237/* This part must be outside protection */
238#include <trace/define_trace.h>