LXR linux/include/trace/events/error

   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>
  75