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 /* If requested, create helpers for calling these tracepoints from Rust. */ 80 #ifdef CREATE_RUST_TRACE_POINTS 81 #undef DEFINE_RUST_DO_TRACE 82 #define DEFINE_RUST_DO_TRACE(name, proto, args) \ 83 __DEFINE_RUST_DO_TRACE(name, PARAMS(proto), PARAMS(args)) 84 #endif 85 86 #undef TRACE_INCLUDE 87 #undef __TRACE_INCLUDE 88 89 #ifndef TRACE_INCLUDE_FILE 90 # define TRACE_INCLUDE_FILE TRACE_SYSTEM 91 # define UNDEF_TRACE_INCLUDE_FILE 92 #endif 93 94 #ifndef TRACE_INCLUDE_PATH 95 # define __TRACE_INCLUDE(system) <trace/events/system.h> 96 # define UNDEF_TRACE_INCLUDE_PATH 97 #else 98 # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) 99 #endif 100 101 # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) 102 103 /* Let the trace headers be reread */ 104 #define TRACE_HEADER_MULTI_READ 105 106 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 107 108 /* Make all open coded DECLARE_TRACE nops */ 109 #undef DECLARE_TRACE 110 #define DECLARE_TRACE(name, proto, args) 111 112 #ifdef TRACEPOINTS_ENABLED 113 #include <trace/trace_events.h> 114 #include <trace/perf.h> 115 #include <trace/bpf_probe.h> 116 #endif 117 118 #undef TRACE_EVENT 119 #undef TRACE_EVENT_FN 120 #undef TRACE_EVENT_FN_COND 121 #undef TRACE_EVENT_SYSCALL 122 #undef TRACE_EVENT_CONDITION 123 #undef TRACE_EVENT_NOP 124 #undef DEFINE_EVENT_NOP 125 #undef DECLARE_EVENT_CLASS 126 #undef DEFINE_EVENT 127 #undef DEFINE_EVENT_FN 128 #undef DEFINE_EVENT_PRINT 129 #undef DEFINE_EVENT_CONDITION 130 #undef TRACE_HEADER_MULTI_READ 131 #undef DECLARE_TRACE 132 133 /* Only undef what we defined in this file */ 134 #ifdef UNDEF_TRACE_INCLUDE_FILE 135 # undef TRACE_INCLUDE_FILE 136 # undef UNDEF_TRACE_INCLUDE_FILE 137 #endif 138 139 #ifdef UNDEF_TRACE_INCLUDE_PATH 140 # undef TRACE_INCLUDE_PATH 141 # undef UNDEF_TRACE_INCLUDE_PATH 142 #endif 143 144 #ifdef CREATE_RUST_TRACE_POINTS 145 # undef DEFINE_RUST_DO_TRACE 146 # define DEFINE_RUST_DO_TRACE(name, proto, args) 147 #endif 148 149 /* We may be processing more files */ 150 #define CREATE_TRACE_POINTS 151 152 #endif /* CREATE_TRACE_POINTS */ 153