Line data    Source code

       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           0 : 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           0 : 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>