define_trace.h (3901B)
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 */