1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Declarations for error reporting tracepoints.
4 *
5 * Copyright (C) 2021, Google LLC.
6 */
7 #undef TRACE_SYSTEM
8 #define TRACE_SYSTEM error_report
9
10 #if !defined(_TRACE_ERROR_REPORT_H) || defined(TRACE_HEADER_MULTI_READ)
11 #define _TRACE_ERROR_REPORT_H
12
13 #include <linux/tracepoint.h>
14
15 #ifndef __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY
16 #define __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY
17
18 enum error_detector {
19 ERROR_DETECTOR_KFENCE,
20 ERROR_DETECTOR_KASAN,
21 ERROR_DETECTOR_WARN,
22 };
23
24 #endif /* __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY */
25
26 #define error_detector_list \
27 EM(ERROR_DETECTOR_KFENCE, "kfence") \
28 EM(ERROR_DETECTOR_KASAN, "kasan") \
29 EMe(ERROR_DETECTOR_WARN, "warning")
30 /* Always end the list with an EMe. */
31
32 #undef EM
33 #undef EMe
34
35 #define EM(a, b) TRACE_DEFINE_ENUM(a);
36 #define EMe(a, b) TRACE_DEFINE_ENUM(a);
37
38 error_detector_list
39
40 #undef EM
41 #undef EMe
42
43 #define EM(a, b) { a, b },
44 #define EMe(a, b) { a, b }
45
46 #define show_error_detector_list(val) \
47 __print_symbolic(val, error_detector_list)
48
49 DECLARE_EVENT_CLASS(error_report_template,
50 TP_PROTO(enum error_detector error_detector, unsigned long id),
51 TP_ARGS(error_detector, id),
52 TP_STRUCT__entry(__field(enum error_detector, error_detector)
53 __field(unsigned long, id)),
54 TP_fast_assign(__entry->error_detector = error_detector;
55 __entry->id = id;),
56 TP_printk("[%s] %lx",
57 show_error_detector_list(__entry->error_detector),
58 __entry->id));
59
60 /**
61 * error_report_end - called after printing the error report
62 * @error_detector: short string describing the error detection tool
63 * @id: pseudo-unique descriptor identifying the report
64 * (e.g. the memory access address)
65 *
66 * This event occurs right after a debugging tool finishes printing the error
67 * report.
68 */
69 DEFINE_EVENT(error_report_template, error_report_end,
70 TP_PROTO(enum error_detector error_detector, unsigned long id),
71 TP_ARGS(error_detector, id));
72
73 #endif /* _TRACE_ERROR_REPORT_H */
74
75 /* This part must be outside protection */
76 #include <trace/define_trace.h>
77
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