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 */ 78