1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
2 /*
3 * Copyright(c) 2015 - 2018 Intel Corporation.
4 */
5 
6 #if !defined(__HFI1_TRACE_EXTRA_H) || defined(TRACE_HEADER_MULTI_READ)
7 #define __HFI1_TRACE_EXTRA_H
8 
9 #include <linux/tracepoint.h>
10 #include <linux/trace_seq.h>
11 
12 #include "hfi.h"
13 
14 /*
15  * Note:
16  * This produces a REALLY ugly trace in the console output when the string is
17  * too long.
18  */
19 
20 #undef TRACE_SYSTEM
21 #define TRACE_SYSTEM hfi1_dbg
22 
23 #define MAX_MSG_LEN 512
24 
25 #pragma GCC diagnostic push
26 #ifndef __clang__
27 #pragma GCC diagnostic ignored "-Wsuggest-attribute=format"
28 #endif
29 
30 DECLARE_EVENT_CLASS(hfi1_trace_template,
31 		    TP_PROTO(const char *function, struct va_format *vaf),
32 		    TP_ARGS(function, vaf),
33 		    TP_STRUCT__entry(__string(function, function)
34 				     __vstring(msg, vaf->fmt, vaf->va)
35 				     ),
36 		    TP_fast_assign(__assign_str(function, function);
37 				   __assign_vstr(msg, vaf->fmt, vaf->va);
38 				   ),
39 		    TP_printk("(%s) %s",
40 			      __get_str(function),
41 			      __get_str(msg))
42 );
43 
44 #pragma GCC diagnostic pop
45 
46 /*
47  * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an
48  * actual function to work and can not be in a macro.
49  */
50 #define __hfi1_trace_def(lvl) \
51 void __printf(2, 3) __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \
52 									\
53 DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl,				\
54 	TP_PROTO(const char *function, struct va_format *vaf),		\
55 	TP_ARGS(function, vaf))
56 
57 #define __hfi1_trace_fn(lvl) \
58 void __printf(2, 3) __hfi1_trace_##lvl(const char *func, char *fmt, ...)\
59 {									\
60 	struct va_format vaf = {					\
61 		.fmt = fmt,						\
62 	};								\
63 	va_list args;							\
64 									\
65 	va_start(args, fmt);						\
66 	vaf.va = &args;							\
67 	trace_hfi1_ ##lvl(func, &vaf);					\
68 	va_end(args);							\
69 	return;								\
70 }
71 
72 /*
73  * To create a new trace level simply define it below and as a __hfi1_trace_fn
74  * in trace.c. This will create all the hooks for calling
75  * hfi1_cdbg(LVL, fmt, ...); as well as take care of all
76  * the debugfs stuff.
77  */
78 __hfi1_trace_def(AFFINITY);
79 __hfi1_trace_def(PKT);
80 __hfi1_trace_def(PROC);
81 __hfi1_trace_def(SDMA);
82 __hfi1_trace_def(LINKVERB);
83 __hfi1_trace_def(DEBUG);
84 __hfi1_trace_def(SNOOP);
85 __hfi1_trace_def(CNTR);
86 __hfi1_trace_def(PIO);
87 __hfi1_trace_def(DC8051);
88 __hfi1_trace_def(FIRMWARE);
89 __hfi1_trace_def(RCVCTRL);
90 __hfi1_trace_def(TID);
91 __hfi1_trace_def(MMU);
92 __hfi1_trace_def(IOCTL);
93 
94 #define hfi1_cdbg(which, fmt, ...) \
95 	__hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__)
96 
97 #define hfi1_dbg(fmt, ...) \
98 	hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__)
99 
100 /*
101  * Define HFI1_EARLY_DBG at compile time or here to enable early trace
102  * messages. Do not check in an enablement for this.
103  */
104 
105 #ifdef HFI1_EARLY_DBG
106 #define hfi1_dbg_early(fmt, ...) \
107 	trace_printk(fmt, ##__VA_ARGS__)
108 #else
109 #define hfi1_dbg_early(fmt, ...)
110 #endif
111 
112 #endif /* __HFI1_TRACE_EXTRA_H */
113 
114 #undef TRACE_INCLUDE_PATH
115 #undef TRACE_INCLUDE_FILE
116 #define TRACE_INCLUDE_PATH .
117 #define TRACE_INCLUDE_FILE trace_dbg
118 #include <trace/define_trace.h>
119