1/* SPDX-License-Identifier: GPL-2.0 */
2
3#undef TRACE_SYSTEM
4#define TRACE_SYSTEM rpm
5
6#if !defined(_TRACE_RUNTIME_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
7#define _TRACE_RUNTIME_POWER_H
8
9#include <linux/ktime.h>
10#include <linux/tracepoint.h>
11
12struct device;
13
14/*
15 * The rpm_internal events are used for tracing some important
16 * runtime pm internal functions.
17 */
18DECLARE_EVENT_CLASS(rpm_internal,
19
20 TP_PROTO(struct device *dev, int flags),
21
22 TP_ARGS(dev, flags),
23
24 TP_STRUCT__entry(
25 __string( name, dev_name(dev) )
26 __field( int, flags )
27 __field( int , usage_count )
28 __field( int , disable_depth )
29 __field( int , runtime_auto )
30 __field( int , request_pending )
31 __field( int , irq_safe )
32 __field( int , child_count )
33 ),
34
35 TP_fast_assign(
36 __assign_str(name);
37 __entry->flags = flags;
38 __entry->usage_count = atomic_read(
39 &dev->power.usage_count);
40 __entry->disable_depth = dev->power.disable_depth;
41 __entry->runtime_auto = dev->power.runtime_auto;
42 __entry->request_pending = dev->power.request_pending;
43 __entry->irq_safe = dev->power.irq_safe;
44 __entry->child_count = atomic_read(
45 &dev->power.child_count);
46 ),
47
48 TP_printk("%s flags-%x cnt-%-2d dep-%-2d auto-%-1d p-%-1d"
49 " irq-%-1d child-%d",
50 __get_str(name), __entry->flags,
51 __entry->usage_count,
52 __entry->disable_depth,
53 __entry->runtime_auto,
54 __entry->request_pending,
55 __entry->irq_safe,
56 __entry->child_count
57 )
58);
59DEFINE_EVENT(rpm_internal, rpm_suspend,
60
61 TP_PROTO(struct device *dev, int flags),
62
63 TP_ARGS(dev, flags)
64);
65DEFINE_EVENT(rpm_internal, rpm_resume,
66
67 TP_PROTO(struct device *dev, int flags),
68
69 TP_ARGS(dev, flags)
70);
71DEFINE_EVENT(rpm_internal, rpm_idle,
72
73 TP_PROTO(struct device *dev, int flags),
74
75 TP_ARGS(dev, flags)
76);
77DEFINE_EVENT(rpm_internal, rpm_usage,
78
79 TP_PROTO(struct device *dev, int flags),
80
81 TP_ARGS(dev, flags)
82);
83
84TRACE_EVENT(rpm_return_int,
85 TP_PROTO(struct device *dev, unsigned long ip, int ret),
86 TP_ARGS(dev, ip, ret),
87
88 TP_STRUCT__entry(
89 __string( name, dev_name(dev))
90 __field( unsigned long, ip )
91 __field( int, ret )
92 ),
93
94 TP_fast_assign(
95 __assign_str(name);
96 __entry->ip = ip;
97 __entry->ret = ret;
98 ),
99
100 TP_printk("%pS:%s ret=%d", (void *)__entry->ip, __get_str(name),
101 __entry->ret)
102);
103
104#define RPM_STATUS_STRINGS \
105 EM(RPM_INVALID, "RPM_INVALID") \
106 EM(RPM_ACTIVE, "RPM_ACTIVE") \
107 EM(RPM_RESUMING, "RPM_RESUMING") \
108 EM(RPM_SUSPENDED, "RPM_SUSPENDED") \
109 EMe(RPM_SUSPENDING, "RPM_SUSPENDING")
110
111/* Enums require being exported to userspace, for user tool parsing. */
112#undef EM
113#undef EMe
114#define EM(a, b) TRACE_DEFINE_ENUM(a);
115#define EMe(a, b) TRACE_DEFINE_ENUM(a);
116
117RPM_STATUS_STRINGS
118
119/*
120 * Now redefine the EM() and EMe() macros to map the enums to the strings that
121 * will be printed in the output.
122 */
123#undef EM
124#undef EMe
125#define EM(a, b) { a, b },
126#define EMe(a, b) { a, b }
127
128TRACE_EVENT(rpm_status,
129 TP_PROTO(struct device *dev, enum rpm_status status),
130 TP_ARGS(dev, status),
131
132 TP_STRUCT__entry(
133 __string(name, dev_name(dev))
134 __field(int, status)
135 ),
136
137 TP_fast_assign(
138 __assign_str(name);
139 __entry->status = status;
140 ),
141
142 TP_printk("%s status=%s", __get_str(name),
143 __print_symbolic(__entry->status, RPM_STATUS_STRINGS))
144);
145
146#endif /* _TRACE_RUNTIME_POWER_H */
147
148/* This part must be outside protection */
149#include <trace/define_trace.h>
150

source code of linux/include/trace/events/rpm.h