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, PARAMS(proto), PARAMS(args)) 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, PARAMS(proto), PARAMS(args)) 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, PARAMS(proto), PARAMS(args)) 48 49 #undef TRACE_EVENT_SYSCALL 50 #define TRACE_EVENT_SYSCALL(name, proto, args, struct, assign, print, reg, unreg) \ 51 DEFINE_TRACE_SYSCALL(name, reg, unreg, PARAMS(proto), PARAMS(args)) 52 53 #undef TRACE_EVENT_NOP 54 #define TRACE_EVENT_NOP(name, proto, args, struct, assign, print) 55 56 #undef DEFINE_EVENT_NOP 57 #define DEFINE_EVENT_NOP(template, name, proto, args) 58 59 #undef DEFINE_EVENT 60 #define DEFINE_EVENT(template, name, proto, args) \ 61 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) 62 63 #undef DEFINE_EVENT_FN 64 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ 65 DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args)) 66 67 #undef DEFINE_EVENT_PRINT 68 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ 69 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) 70 71 #undef DEFINE_EVENT_CONDITION 72 #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \ 73 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) 74 75 #undef DECLARE_TRACE 76 #define DECLARE_TRACE(name, proto, args) \ 77 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) 78 79 #undef DECLARE_TRACE_CONDITION 80 #define DECLARE_TRACE_CONDITION(name, proto, args, cond) \ 81 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) 82 83 /* If requested, create helpers for calling these tracepoints from Rust. */ 84 #ifdef CREATE_RUST_TRACE_POINTS 85 #undef DEFINE_RUST_DO_TRACE 86 #define DEFINE_RUST_DO_TRACE(name, proto, args) \ 87 __DEFINE_RUST_DO_TRACE(name, PARAMS(proto), PARAMS(args)) 88 #endif 89 90 #undef TRACE_INCLUDE 91 #undef __TRACE_INCLUDE 92 93 #ifndef TRACE_INCLUDE_FILE 94 # define TRACE_INCLUDE_FILE TRACE_SYSTEM 95 # define UNDEF_TRACE_INCLUDE_FILE 96 #endif 97 98 #ifndef TRACE_INCLUDE_PATH 99 # define __TRACE_INCLUDE(system) <trace/events/system.h> 100 # define UNDEF_TRACE_INCLUDE_PATH 101 #else 102 # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) 103 #endif 104 105 # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) 106 107 /* Let the trace headers be reread */ 108 #define TRACE_HEADER_MULTI_READ 109 110 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 111 112 /* Make all open coded DECLARE_TRACE nops */ 113 #undef DECLARE_TRACE 114 #define DECLARE_TRACE(name, proto, args) 115 #undef DECLARE_TRACE_CONDITION 116 #define DECLARE_TRACE_CONDITION(name, proto, args, cond) 117 118 #ifdef TRACEPOINTS_ENABLED 119 #include <trace/trace_events.h> 120 #include <trace/perf.h> 121 #include <trace/bpf_probe.h> 122 #endif 123 124 #undef TRACE_EVENT 125 #undef TRACE_EVENT_FN 126 #undef TRACE_EVENT_FN_COND 127 #undef TRACE_EVENT_SYSCALL 128 #undef TRACE_EVENT_CONDITION 129 #undef TRACE_EVENT_NOP 130 #undef DEFINE_EVENT_NOP 131 #undef DECLARE_EVENT_CLASS 132 #undef DEFINE_EVENT 133 #undef DEFINE_EVENT_FN 134 #undef DEFINE_EVENT_PRINT 135 #undef DEFINE_EVENT_CONDITION 136 #undef TRACE_HEADER_MULTI_READ 137 #undef DECLARE_TRACE 138 #undef DECLARE_TRACE_CONDITION 139 140 /* Only undef what we defined in this file */ 141 #ifdef UNDEF_TRACE_INCLUDE_FILE 142 # undef TRACE_INCLUDE_FILE 143 # undef UNDEF_TRACE_INCLUDE_FILE 144 #endif 145 146 #ifdef UNDEF_TRACE_INCLUDE_PATH 147 # undef TRACE_INCLUDE_PATH 148 # undef UNDEF_TRACE_INCLUDE_PATH 149 #endif 150 151 #ifdef CREATE_RUST_TRACE_POINTS 152 # undef DEFINE_RUST_DO_TRACE 153 # define DEFINE_RUST_DO_TRACE(name, proto, args) 154 #endif 155 156 /* We may be processing more files */ 157 #define CREATE_TRACE_POINTS 158 159 #endif /* CREATE_TRACE_POINTS */ 160