| | 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 | |
| | 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 */ |
projects / lttng-modules.git / blame_incremental