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 }; 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 36 error_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 47 DECLARE_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 */ 67 DEFINE_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> 75