projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 17baffe2 MD |
1 | /* |
| 2 | * define_trace.h | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
| 886d51a3 | 5 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 17baffe2 | 6 | * |
| 886d51a3 MD |
7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; only | |
| 10 | * version 2.1 of the License. | |
| 11 | * | |
| 12 | * This library is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with this library; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17baffe2 MD |
20 | */ |
| 21 | ||
| f62b389e MD |
22 | /* |
| 23 | * Trace files that want to automate creationg of all tracepoints defined | |
| 24 | * in their file should include this file. The following are macros that the | |
| 25 | * trace file may define: | |
| 26 | * | |
| 27 | * TRACE_SYSTEM defines the system the tracepoint is for | |
| 28 | * | |
| 29 | * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h | |
| 30 | * This macro may be defined to tell define_trace.h what file to include. | |
| 31 | * Note, leave off the ".h". | |
| 32 | * | |
| 33 | * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace | |
| 34 | * then this macro can define the path to use. Note, the path is relative to | |
| 35 | * define_trace.h, not the file including it. Full path names for out of tree | |
| 36 | * modules must be used. | |
| 37 | */ | |
| 38 | ||
| 39 | #ifdef CREATE_TRACE_POINTS | |
| 40 | ||
| 41 | /* Prevent recursion */ | |
| 42 | #undef CREATE_TRACE_POINTS | |
| 43 | ||
| 44 | #include <linux/stringify.h> | |
| 45 | /* | |
| 46 | * module.h includes tracepoints, and because ftrace.h | |
| 47 | * pulls in module.h: | |
| 48 | * trace/ftrace.h -> linux/ftrace_event.h -> linux/perf_event.h -> | |
| 49 | * linux/ftrace.h -> linux/module.h | |
| 50 | * we must include module.h here before we play with any of | |
| 51 | * the TRACE_EVENT() macros, otherwise the tracepoints included | |
| 52 | * by module.h may break the build. | |
| 53 | */ | |
| 54 | #include <linux/module.h> | |
| 55 | ||
| 56 | #undef TRACE_EVENT | |
| 57 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
| 58 | DEFINE_TRACE(name) | |
| 59 | ||
| 60 | #undef TRACE_EVENT_CONDITION | |
| 61 | #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ | |
| 62 | TRACE_EVENT(name, \ | |
| 63 | PARAMS(proto), \ | |
| 64 | PARAMS(args), \ | |
| 65 | PARAMS(tstruct), \ | |
| 66 | PARAMS(assign), \ | |
| 67 | PARAMS(print)) | |
| 68 | ||
| 69 | #undef TRACE_EVENT_FN | |
| 70 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
| 71 | assign, print, reg, unreg) \ | |
| 72 | DEFINE_TRACE_FN(name, reg, unreg) | |
| 73 | ||
| 74 | #undef DEFINE_EVENT | |
| 75 | #define DEFINE_EVENT(template, name, proto, args) \ | |
| 76 | DEFINE_TRACE(name) | |
| 77 | ||
| 78 | #undef DEFINE_EVENT_PRINT | |
| 79 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
| 80 | DEFINE_TRACE(name) | |
| 81 | ||
| 82 | #undef DEFINE_EVENT_CONDITION | |
| 83 | #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \ | |
| 84 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
| 85 | ||
| 86 | #undef DECLARE_TRACE | |
| 87 | #define DECLARE_TRACE(name, proto, args) \ | |
| 88 | DEFINE_TRACE(name) | |
| 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 | ||
| 116 | #ifdef LTTNG_PACKAGE_BUILD | |
| 117 | #include "lttng-events.h" | |
| 118 | #endif | |
| 119 | ||
| 120 | #undef TRACE_EVENT | |
| 121 | #undef TRACE_EVENT_FN | |
| 122 | #undef TRACE_EVENT_CONDITION | |
| 123 | #undef DECLARE_EVENT_CLASS | |
| 124 | #undef DEFINE_EVENT | |
| 125 | #undef DEFINE_EVENT_PRINT | |
| 126 | #undef DEFINE_EVENT_CONDITION | |
| 127 | #undef TRACE_HEADER_MULTI_READ | |
| f62b389e MD |
128 | |
| 129 | /* Only undef what we defined in this file */ | |
| 130 | #ifdef UNDEF_TRACE_INCLUDE_FILE | |
| 131 | # undef TRACE_INCLUDE_FILE | |
| 132 | # undef UNDEF_TRACE_INCLUDE_FILE | |
| 133 | #endif | |
| 134 | ||
| 135 | #ifdef UNDEF_TRACE_INCLUDE_PATH | |
| 136 | # undef TRACE_INCLUDE_PATH | |
| 137 | # undef UNDEF_TRACE_INCLUDE_PATH | |
| 138 | #endif | |
| 139 | ||
| 140 | /* We may be processing more files */ | |
| 141 | #define CREATE_TRACE_POINTS | |
| 142 | ||
| 143 | #endif /* CREATE_TRACE_POINTS */ |