projects / deliverable / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 17baffe2 MD |
1 | /* |
| 2 | * define_trace.h | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
| 5 | * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 6 | * | |
| 7 | * Dual LGPL v2.1/GPL v2 license. | |
| 8 | */ | |
| 9 | ||
| f62b389e MD |
10 | /* |
| 11 | * Trace files that want to automate creationg of all tracepoints defined | |
| 12 | * in their file should include this file. The following are macros that the | |
| 13 | * trace file may define: | |
| 14 | * | |
| 15 | * TRACE_SYSTEM defines the system the tracepoint is for | |
| 16 | * | |
| 17 | * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h | |
| 18 | * This macro may be defined to tell define_trace.h what file to include. | |
| 19 | * Note, leave off the ".h". | |
| 20 | * | |
| 21 | * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace | |
| 22 | * then this macro can define the path to use. Note, the path is relative to | |
| 23 | * define_trace.h, not the file including it. Full path names for out of tree | |
| 24 | * modules must be used. | |
| 25 | */ | |
| 26 | ||
| 27 | #ifdef CREATE_TRACE_POINTS | |
| 28 | ||
| 29 | /* Prevent recursion */ | |
| 30 | #undef CREATE_TRACE_POINTS | |
| 31 | ||
| 32 | #include <linux/stringify.h> | |
| 33 | /* | |
| 34 | * module.h includes tracepoints, and because ftrace.h | |
| 35 | * pulls in module.h: | |
| 36 | * trace/ftrace.h -> linux/ftrace_event.h -> linux/perf_event.h -> | |
| 37 | * linux/ftrace.h -> linux/module.h | |
| 38 | * we must include module.h here before we play with any of | |
| 39 | * the TRACE_EVENT() macros, otherwise the tracepoints included | |
| 40 | * by module.h may break the build. | |
| 41 | */ | |
| 42 | #include <linux/module.h> | |
| 43 | ||
| 44 | #undef TRACE_EVENT | |
| 45 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
| 46 | DEFINE_TRACE(name) | |
| 47 | ||
| 48 | #undef TRACE_EVENT_CONDITION | |
| 49 | #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ | |
| 50 | TRACE_EVENT(name, \ | |
| 51 | PARAMS(proto), \ | |
| 52 | PARAMS(args), \ | |
| 53 | PARAMS(tstruct), \ | |
| 54 | PARAMS(assign), \ | |
| 55 | PARAMS(print)) | |
| 56 | ||
| 57 | #undef TRACE_EVENT_FN | |
| 58 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
| 59 | assign, print, reg, unreg) \ | |
| 60 | DEFINE_TRACE_FN(name, reg, unreg) | |
| 61 | ||
| 62 | #undef DEFINE_EVENT | |
| 63 | #define DEFINE_EVENT(template, name, proto, args) \ | |
| 64 | DEFINE_TRACE(name) | |
| 65 | ||
| 66 | #undef DEFINE_EVENT_PRINT | |
| 67 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
| 68 | DEFINE_TRACE(name) | |
| 69 | ||
| 70 | #undef DEFINE_EVENT_CONDITION | |
| 71 | #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \ | |
| 72 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
| 73 | ||
| 74 | #undef DECLARE_TRACE | |
| 75 | #define DECLARE_TRACE(name, proto, args) \ | |
| 76 | DEFINE_TRACE(name) | |
| 77 | ||
| 78 | #undef TRACE_INCLUDE | |
| 79 | #undef __TRACE_INCLUDE | |
| 80 | ||
| 81 | #ifndef TRACE_INCLUDE_FILE | |
| 82 | # define TRACE_INCLUDE_FILE TRACE_SYSTEM | |
| 83 | # define UNDEF_TRACE_INCLUDE_FILE | |
| 84 | #endif | |
| 85 | ||
| 86 | #ifndef TRACE_INCLUDE_PATH | |
| 87 | # define __TRACE_INCLUDE(system) <trace/events/system.h> | |
| 88 | # define UNDEF_TRACE_INCLUDE_PATH | |
| 89 | #else | |
| 90 | # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) | |
| 91 | #endif | |
| 92 | ||
| 93 | # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) | |
| 94 | ||
| 95 | /* Let the trace headers be reread */ | |
| 96 | #define TRACE_HEADER_MULTI_READ | |
| 97 | ||
| 98 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
| 99 | ||
| 100 | /* Make all open coded DECLARE_TRACE nops */ | |
| 101 | #undef DECLARE_TRACE | |
| 102 | #define DECLARE_TRACE(name, proto, args) | |
| 103 | ||
| 104 | #ifdef LTTNG_PACKAGE_BUILD | |
| 105 | #include "lttng-events.h" | |
| 106 | #endif | |
| 107 | ||
| 108 | #undef TRACE_EVENT | |
| 109 | #undef TRACE_EVENT_FN | |
| 110 | #undef TRACE_EVENT_CONDITION | |
| 111 | #undef DECLARE_EVENT_CLASS | |
| 112 | #undef DEFINE_EVENT | |
| 113 | #undef DEFINE_EVENT_PRINT | |
| 114 | #undef DEFINE_EVENT_CONDITION | |
| 115 | #undef TRACE_HEADER_MULTI_READ | |
| 116 | #undef DECLARE_TRACE | |
| 117 | ||
| 118 | /* Only undef what we defined in this file */ | |
| 119 | #ifdef UNDEF_TRACE_INCLUDE_FILE | |
| 120 | # undef TRACE_INCLUDE_FILE | |
| 121 | # undef UNDEF_TRACE_INCLUDE_FILE | |
| 122 | #endif | |
| 123 | ||
| 124 | #ifdef UNDEF_TRACE_INCLUDE_PATH | |
| 125 | # undef TRACE_INCLUDE_PATH | |
| 126 | # undef UNDEF_TRACE_INCLUDE_PATH | |
| 127 | #endif | |
| 128 | ||
| 129 | /* We may be processing more files */ | |
| 130 | #define CREATE_TRACE_POINTS | |
| 131 | ||
| 132 | #endif /* CREATE_TRACE_POINTS */ |