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