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) 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) 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) 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) 58 59 #undef DEFINE_EVENT_FN 60 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ 61 DEFINE_TRACE_FN(name, reg, unreg) 62 63 #undef DEFINE_EVENT_PRINT 64 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ 65 DEFINE_TRACE(name) 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) 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