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