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
18enum error_detector {
19	ERROR_DETECTOR_KFENCE,
20	ERROR_DETECTOR_KASAN
21};
22
23#endif /* __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY */
24
25#define error_detector_list	\
26	EM(ERROR_DETECTOR_KFENCE, "kfence")	\
27	EMe(ERROR_DETECTOR_KASAN, "kasan")
28/* Always end the list with an EMe. */
29
30#undef EM
31#undef EMe
32
33#define EM(a, b)	TRACE_DEFINE_ENUM(a);
34#define EMe(a, b)	TRACE_DEFINE_ENUM(a);
35
36error_detector_list
37
38#undef EM
39#undef EMe
40
41#define EM(a, b) { a, b },
42#define EMe(a, b) { a, b }
43
44#define show_error_detector_list(val) \
45	__print_symbolic(val, error_detector_list)
46
47DECLARE_EVENT_CLASS(error_report_template,
48		    TP_PROTO(enum error_detector error_detector, unsigned long id),
49		    TP_ARGS(error_detector, id),
50		    TP_STRUCT__entry(__field(enum error_detector, error_detector)
51					     __field(unsigned long, id)),
52		    TP_fast_assign(__entry->error_detector = error_detector;
53				   __entry->id = id;),
54		    TP_printk("[%s] %lx",
55			      show_error_detector_list(__entry->error_detector),
56			      __entry->id));
57
58/**
59 * error_report_end - called after printing the error report
60 * @error_detector:	short string describing the error detection tool
61 * @id:			pseudo-unique descriptor identifying the report
62 *			(e.g. the memory access address)
63 *
64 * This event occurs right after a debugging tool finishes printing the error
65 * report.
66 */
67DEFINE_EVENT(error_report_template, error_report_end,
68	     TP_PROTO(enum error_detector error_detector, unsigned long id),
69	     TP_ARGS(error_detector, id));
70
71#endif /* _TRACE_ERROR_REPORT_H */
72
73/* This part must be outside protection */
74#include <trace/define_trace.h>