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22c78d1c | 1 | /* I2C message transfer tracepoints |
d9a83d62 DH |
2 | * |
3 | * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | #undef TRACE_SYSTEM | |
12 | #define TRACE_SYSTEM i2c | |
13 | ||
14 | #if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ) | |
15 | #define _TRACE_I2C_H | |
16 | ||
17 | #include <linux/i2c.h> | |
18 | #include <linux/tracepoint.h> | |
19 | ||
20 | /* | |
22c78d1c | 21 | * drivers/i2c/i2c-core-base.c |
d9a83d62 | 22 | */ |
8cf868af | 23 | extern int i2c_transfer_trace_reg(void); |
d9a83d62 DH |
24 | extern void i2c_transfer_trace_unreg(void); |
25 | ||
26 | /* | |
27 | * __i2c_transfer() write request | |
28 | */ | |
29 | TRACE_EVENT_FN(i2c_write, | |
30 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
31 | int num), | |
32 | TP_ARGS(adap, msg, num), | |
33 | TP_STRUCT__entry( | |
34 | __field(int, adapter_nr ) | |
35 | __field(__u16, msg_nr ) | |
36 | __field(__u16, addr ) | |
37 | __field(__u16, flags ) | |
38 | __field(__u16, len ) | |
39 | __dynamic_array(__u8, buf, msg->len) ), | |
40 | TP_fast_assign( | |
41 | __entry->adapter_nr = adap->nr; | |
42 | __entry->msg_nr = num; | |
43 | __entry->addr = msg->addr; | |
44 | __entry->flags = msg->flags; | |
45 | __entry->len = msg->len; | |
46 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); | |
47 | ), | |
48 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", | |
49 | __entry->adapter_nr, | |
50 | __entry->msg_nr, | |
51 | __entry->addr, | |
52 | __entry->flags, | |
53 | __entry->len, | |
54 | __entry->len, __get_dynamic_array(buf) | |
55 | ), | |
56 | i2c_transfer_trace_reg, | |
57 | i2c_transfer_trace_unreg); | |
58 | ||
59 | /* | |
60 | * __i2c_transfer() read request | |
61 | */ | |
62 | TRACE_EVENT_FN(i2c_read, | |
63 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
64 | int num), | |
65 | TP_ARGS(adap, msg, num), | |
66 | TP_STRUCT__entry( | |
67 | __field(int, adapter_nr ) | |
68 | __field(__u16, msg_nr ) | |
69 | __field(__u16, addr ) | |
70 | __field(__u16, flags ) | |
71 | __field(__u16, len ) | |
72 | ), | |
73 | TP_fast_assign( | |
74 | __entry->adapter_nr = adap->nr; | |
75 | __entry->msg_nr = num; | |
76 | __entry->addr = msg->addr; | |
77 | __entry->flags = msg->flags; | |
78 | __entry->len = msg->len; | |
79 | ), | |
80 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u", | |
81 | __entry->adapter_nr, | |
82 | __entry->msg_nr, | |
83 | __entry->addr, | |
84 | __entry->flags, | |
85 | __entry->len | |
86 | ), | |
87 | i2c_transfer_trace_reg, | |
88 | i2c_transfer_trace_unreg); | |
89 | ||
90 | /* | |
91 | * __i2c_transfer() read reply | |
92 | */ | |
93 | TRACE_EVENT_FN(i2c_reply, | |
94 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
95 | int num), | |
96 | TP_ARGS(adap, msg, num), | |
97 | TP_STRUCT__entry( | |
98 | __field(int, adapter_nr ) | |
99 | __field(__u16, msg_nr ) | |
100 | __field(__u16, addr ) | |
101 | __field(__u16, flags ) | |
102 | __field(__u16, len ) | |
103 | __dynamic_array(__u8, buf, msg->len) ), | |
104 | TP_fast_assign( | |
105 | __entry->adapter_nr = adap->nr; | |
106 | __entry->msg_nr = num; | |
107 | __entry->addr = msg->addr; | |
108 | __entry->flags = msg->flags; | |
109 | __entry->len = msg->len; | |
110 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); | |
111 | ), | |
112 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", | |
113 | __entry->adapter_nr, | |
114 | __entry->msg_nr, | |
115 | __entry->addr, | |
116 | __entry->flags, | |
117 | __entry->len, | |
118 | __entry->len, __get_dynamic_array(buf) | |
119 | ), | |
120 | i2c_transfer_trace_reg, | |
121 | i2c_transfer_trace_unreg); | |
122 | ||
123 | /* | |
124 | * __i2c_transfer() result | |
125 | */ | |
126 | TRACE_EVENT_FN(i2c_result, | |
127 | TP_PROTO(const struct i2c_adapter *adap, int num, int ret), | |
128 | TP_ARGS(adap, num, ret), | |
129 | TP_STRUCT__entry( | |
130 | __field(int, adapter_nr ) | |
131 | __field(__u16, nr_msgs ) | |
132 | __field(__s16, ret ) | |
133 | ), | |
134 | TP_fast_assign( | |
135 | __entry->adapter_nr = adap->nr; | |
136 | __entry->nr_msgs = num; | |
137 | __entry->ret = ret; | |
138 | ), | |
139 | TP_printk("i2c-%d n=%u ret=%d", | |
140 | __entry->adapter_nr, | |
141 | __entry->nr_msgs, | |
142 | __entry->ret | |
143 | ), | |
144 | i2c_transfer_trace_reg, | |
145 | i2c_transfer_trace_unreg); | |
146 | ||
147 | #endif /* _TRACE_I2C_H */ | |
148 | ||
149 | /* This part must be outside protection */ | |
150 | #include <trace/define_trace.h> |