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 DEFINE_EVENT 50 #define DEFINE_EVENT(template, name, proto, args) \ 51 DEFINE_TRACE(name) 52 53 #undef DEFINE_EVENT_FN 54 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ 55 DEFINE_TRACE_FN(name, reg, unreg) 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 TRACEPOINTS_ENABLED 96 #include <trace/trace_events.h> 97 #include <trace/perf.h> 98 #endif 99 100 #undef TRACE_EVENT 101 #undef TRACE_EVENT_FN 102 #undef TRACE_EVENT_FN_COND 103 #undef TRACE_EVENT_CONDITION 104 #undef DECLARE_EVENT_CLASS 105 #undef DEFINE_EVENT 106 #undef DEFINE_EVENT_FN 107 #undef DEFINE_EVENT_PRINT 108 #undef DEFINE_EVENT_CONDITION 109 #undef TRACE_HEADER_MULTI_READ 110 #undef DECLARE_TRACE 111 112 /* Only undef what we defined in this file */ 113 #ifdef UNDEF_TRACE_INCLUDE_FILE 114 # undef TRACE_INCLUDE_FILE 115 # undef UNDEF_TRACE_INCLUDE_FILE 116 #endif 117 118 #ifdef UNDEF_TRACE_INCLUDE_PATH 119 # undef TRACE_INCLUDE_PATH 120 # undef UNDEF_TRACE_INCLUDE_PATH 121 #endif 122 123 /* We may be processing more files */ 124 #define CREATE_TRACE_POINTS 125 126 #endif /* CREATE_TRACE_POINTS */ 127