define_custom_trace.h (2145B)
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_CUSTOM_TRACE_EVENTS 20 21/* Prevent recursion */ 22#undef CREATE_CUSTOM_TRACE_EVENTS 23 24#include <linux/stringify.h> 25 26#undef TRACE_CUSTOM_EVENT 27#define TRACE_CUSTOM_EVENT(name, proto, args, tstruct, assign, print) 28 29#undef DEFINE_CUSTOM_EVENT 30#define DEFINE_CUSTOM_EVENT(template, name, proto, args) 31 32#undef TRACE_INCLUDE 33#undef __TRACE_INCLUDE 34 35#ifndef TRACE_INCLUDE_FILE 36# define TRACE_INCLUDE_FILE TRACE_SYSTEM 37# define UNDEF_TRACE_INCLUDE_FILE 38#endif 39 40#ifndef TRACE_INCLUDE_PATH 41# define __TRACE_INCLUDE(system) <trace/events/system.h> 42# define UNDEF_TRACE_INCLUDE_PATH 43#else 44# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) 45#endif 46 47# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) 48 49/* Let the trace headers be reread */ 50#define TRACE_CUSTOM_MULTI_READ 51 52#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 53 54#ifdef TRACEPOINTS_ENABLED 55#include <trace/trace_custom_events.h> 56#endif 57 58#undef TRACE_CUSTOM_EVENT 59#undef DECLARE_CUSTOM_EVENT_CLASS 60#undef DEFINE_CUSTOM_EVENT 61#undef TRACE_CUSTOM_MULTI_READ 62 63/* Only undef what we defined in this file */ 64#ifdef UNDEF_TRACE_INCLUDE_FILE 65# undef TRACE_INCLUDE_FILE 66# undef UNDEF_TRACE_INCLUDE_FILE 67#endif 68 69#ifdef UNDEF_TRACE_INCLUDE_PATH 70# undef TRACE_INCLUDE_PATH 71# undef UNDEF_TRACE_INCLUDE_PATH 72#endif 73 74/* We may be processing more files */ 75#define CREATE_CUSTOM_TRACE_POINTS 76 77#endif /* CREATE_CUSTOM_TRACE_POINTS */