LXR linux/include/trace/define

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Trace files that want to automate creation of all tracepoints defined
   4 * in their file should include this file. The following are macros that the
   5 * trace file may define:
   6 *
   7 * TRACE_SYSTEM defines the system the tracepoint is for
   8 *
   9 * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
  10 *     This macro may be defined to tell define_trace.h what file to include.
  11 *     Note, leave off the ".h".
  12 *
  13 * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
  14 *     then this macro can define the path to use. Note, the path is relative to
  15 *     define_trace.h, not the file including it. Full path names for out of tree
  16 *     modules must be used.
  17 */
  18
  19#ifdef CREATE_TRACE_POINTS
  20
  21/* Prevent recursion */
  22#undef CREATE_TRACE_POINTS
  23
  24#include <linux/stringify.h>
  25
  26#undef TRACE_EVENT
  27#define TRACE_EVENT(name, proto, args, tstruct, assign, print)  \
  28        DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
  29
  30#undef TRACE_EVENT_CONDITION
  31#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
  32        TRACE_EVENT(name,                                               \
  33                PARAMS(proto),                                          \
  34                PARAMS(args),                                           \
  35                PARAMS(tstruct),                                        \
  36                PARAMS(assign),                                         \
  37                PARAMS(print))
  38
  39#undef TRACE_EVENT_FN
  40#define TRACE_EVENT_FN(name, proto, args, tstruct,              \
  41                assign, print, reg, unreg)                      \
  42        DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
  43
  44#undef TRACE_EVENT_FN_COND
  45#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct,           \
  46                assign, print, reg, unreg)                      \
  47        DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
  48
  49#undef TRACE_EVENT_NOP
  50#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print)
  51
  52#undef DEFINE_EVENT_NOP
  53#define DEFINE_EVENT_NOP(template, name, proto, args)
  54
  55#undef DEFINE_EVENT
  56#define DEFINE_EVENT(template, name, proto, args) \
  57        DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
  58
  59#undef DEFINE_EVENT_FN
  60#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
  61        DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
  62
  63#undef DEFINE_EVENT_PRINT
  64#define DEFINE_EVENT_PRINT(template, name, proto, args, print)  \
  65        DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
  66
  67#undef DEFINE_EVENT_CONDITION
  68#define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
  69        DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
  70
  71#undef DECLARE_TRACE
  72#define DECLARE_TRACE(name, proto, args)        \
  73        DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
  74
  75#undef TRACE_INCLUDE
  76#undef __TRACE_INCLUDE
  77
  78#ifndef TRACE_INCLUDE_FILE
  79# define TRACE_INCLUDE_FILE TRACE_SYSTEM
  80# define UNDEF_TRACE_INCLUDE_FILE
  81#endif
  82
  83#ifndef TRACE_INCLUDE_PATH
  84# define __TRACE_INCLUDE(system) <trace/events/system.h>
  85# define UNDEF_TRACE_INCLUDE_PATH
  86#else
  87# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
  88#endif
  89
  90# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
  91
  92/* Let the trace headers be reread */
  93#define TRACE_HEADER_MULTI_READ
  94
  95#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
  96
  97/* Make all open coded DECLARE_TRACE nops */
  98#undef DECLARE_TRACE
  99#define DECLARE_TRACE(name, proto, args)
 100
 101#ifdef TRACEPOINTS_ENABLED
 102#include <trace/trace_events.h>
 103#include <trace/perf.h>
 104#include <trace/bpf_probe.h>
 105#endif
 106
 107#undef TRACE_EVENT
 108#undef TRACE_EVENT_FN
 109#undef TRACE_EVENT_FN_COND
 110#undef TRACE_EVENT_CONDITION
 111#undef TRACE_EVENT_NOP
 112#undef DEFINE_EVENT_NOP
 113#undef DECLARE_EVENT_CLASS
 114#undef DEFINE_EVENT
 115#undef DEFINE_EVENT_FN
 116#undef DEFINE_EVENT_PRINT
 117#undef DEFINE_EVENT_CONDITION
 118#undef TRACE_HEADER_MULTI_READ
 119#undef DECLARE_TRACE
 120
 121/* Only undef what we defined in this file */
 122#ifdef UNDEF_TRACE_INCLUDE_FILE
 123# undef TRACE_INCLUDE_FILE
 124# undef UNDEF_TRACE_INCLUDE_FILE
 125#endif
 126
 127#ifdef UNDEF_TRACE_INCLUDE_PATH
 128# undef TRACE_INCLUDE_PATH
 129# undef UNDEF_TRACE_INCLUDE_PATH
 130#endif
 131
 132/* We may be processing more files */
 133#define CREATE_TRACE_POINTS
 134
 135#endif /* CREATE_TRACE_POINTS */
 136