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1 | /* |
2 | * Copyright(c) 2015, 2016 Intel Corporation. | |
3 | * | |
4 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
5 | * redistributing this file, you may do so under either license. | |
6 | * | |
7 | * GPL LICENSE SUMMARY | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of version 2 of the GNU General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * BSD LICENSE | |
19 | * | |
20 | * Redistribution and use in source and binary forms, with or without | |
21 | * modification, are permitted provided that the following conditions | |
22 | * are met: | |
23 | * | |
24 | * - Redistributions of source code must retain the above copyright | |
25 | * notice, this list of conditions and the following disclaimer. | |
26 | * - Redistributions in binary form must reproduce the above copyright | |
27 | * notice, this list of conditions and the following disclaimer in | |
28 | * the documentation and/or other materials provided with the | |
29 | * distribution. | |
30 | * - Neither the name of Intel Corporation nor the names of its | |
31 | * contributors may be used to endorse or promote products derived | |
32 | * from this software without specific prior written permission. | |
33 | * | |
34 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
35 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
36 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
37 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
38 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
39 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
41 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
42 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
43 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
45 | * | |
46 | */ | |
47 | #if !defined(__HFI1_TRACE_EXTRA_H) || defined(TRACE_HEADER_MULTI_READ) | |
48 | #define __HFI1_TRACE_EXTRA_H | |
49 | ||
50 | #include <linux/tracepoint.h> | |
51 | #include <linux/trace_seq.h> | |
52 | ||
53 | #include "hfi.h" | |
54 | ||
55 | /* | |
56 | * Note: | |
57 | * This produces a REALLY ugly trace in the console output when the string is | |
58 | * too long. | |
59 | */ | |
60 | ||
61 | #undef TRACE_SYSTEM | |
62 | #define TRACE_SYSTEM hfi1_dbg | |
63 | ||
64 | #define MAX_MSG_LEN 512 | |
65 | ||
66 | DECLARE_EVENT_CLASS(hfi1_trace_template, | |
67 | TP_PROTO(const char *function, struct va_format *vaf), | |
68 | TP_ARGS(function, vaf), | |
69 | TP_STRUCT__entry(__string(function, function) | |
70 | __dynamic_array(char, msg, MAX_MSG_LEN) | |
71 | ), | |
72 | TP_fast_assign(__assign_str(function, function); | |
73 | WARN_ON_ONCE(vsnprintf | |
74 | (__get_dynamic_array(msg), | |
75 | MAX_MSG_LEN, vaf->fmt, | |
76 | *vaf->va) >= | |
77 | MAX_MSG_LEN); | |
78 | ), | |
79 | TP_printk("(%s) %s", | |
80 | __get_str(function), | |
81 | __get_str(msg)) | |
82 | ); | |
83 | ||
84 | /* | |
85 | * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an | |
86 | * actual function to work and can not be in a macro. | |
87 | */ | |
88 | #define __hfi1_trace_def(lvl) \ | |
89 | void __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \ | |
90 | \ | |
91 | DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl, \ | |
92 | TP_PROTO(const char *function, struct va_format *vaf), \ | |
93 | TP_ARGS(function, vaf)) | |
94 | ||
95 | #define __hfi1_trace_fn(lvl) \ | |
96 | void __hfi1_trace_##lvl(const char *func, char *fmt, ...) \ | |
97 | { \ | |
98 | struct va_format vaf = { \ | |
99 | .fmt = fmt, \ | |
100 | }; \ | |
101 | va_list args; \ | |
102 | \ | |
103 | va_start(args, fmt); \ | |
104 | vaf.va = &args; \ | |
105 | trace_hfi1_ ##lvl(func, &vaf); \ | |
106 | va_end(args); \ | |
107 | return; \ | |
108 | } | |
109 | ||
110 | /* | |
111 | * To create a new trace level simply define it below and as a __hfi1_trace_fn | |
112 | * in trace.c. This will create all the hooks for calling | |
113 | * hfi1_cdbg(LVL, fmt, ...); as well as take care of all | |
114 | * the debugfs stuff. | |
115 | */ | |
116 | __hfi1_trace_def(PKT); | |
117 | __hfi1_trace_def(PROC); | |
118 | __hfi1_trace_def(SDMA); | |
119 | __hfi1_trace_def(LINKVERB); | |
120 | __hfi1_trace_def(DEBUG); | |
121 | __hfi1_trace_def(SNOOP); | |
122 | __hfi1_trace_def(CNTR); | |
123 | __hfi1_trace_def(PIO); | |
124 | __hfi1_trace_def(DC8051); | |
125 | __hfi1_trace_def(FIRMWARE); | |
126 | __hfi1_trace_def(RCVCTRL); | |
127 | __hfi1_trace_def(TID); | |
128 | __hfi1_trace_def(MMU); | |
129 | __hfi1_trace_def(IOCTL); | |
130 | ||
131 | #define hfi1_cdbg(which, fmt, ...) \ | |
132 | __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__) | |
133 | ||
134 | #define hfi1_dbg(fmt, ...) \ | |
135 | hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__) | |
136 | ||
137 | /* | |
138 | * Define HFI1_EARLY_DBG at compile time or here to enable early trace | |
139 | * messages. Do not check in an enablement for this. | |
140 | */ | |
141 | ||
142 | #ifdef HFI1_EARLY_DBG | |
143 | #define hfi1_dbg_early(fmt, ...) \ | |
144 | trace_printk(fmt, ##__VA_ARGS__) | |
145 | #else | |
146 | #define hfi1_dbg_early(fmt, ...) | |
147 | #endif | |
148 | ||
149 | #endif /* __HFI1_TRACE_EXTRA_H */ | |
150 | ||
151 | #undef TRACE_INCLUDE_PATH | |
152 | #undef TRACE_INCLUDE_FILE | |
153 | #define TRACE_INCLUDE_PATH . | |
154 | #define TRACE_INCLUDE_FILE trace_dbg | |
155 | #include <trace/define_trace.h> |