include/ust/tracepoint_event.h

   1 /*
   2  * Copyright (C) 2009     Steven Rostedt <srostedt@redhat.com>
   3  * Copyright (C) 2011     Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation;
   8  * version 2.1 of the License.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  18  *
  19  *
  20  * Trace files that want to automate creationg of all tracepoints defined
  21  * in their file should include this file. The following are macros that the
  22  * trace file may define:
  23  *
  24  * TRACE_SYSTEM defines the system the tracepoint is for
  25  *
  26  * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
  27  *     This macro may be defined to tell define_trace.h what file to include.
  28  *     Note, leave off the ".h".
  29  *
  30  * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
  31  *     then this macro can define the path to use. Note, the path is relative to
  32  *     tracepoint_event.h, not the file including it. Full path names for out of tree
  33  *     modules must be used.
  34  */
  35
  36 #ifdef TRACEPOINT_CREATE_PROBES
  37
  38 /* Prevent recursion */
  39 #undef TRACEPOINT_CREATE_PROBES
  40
  41 #ifndef __tp_stringify
  42 #define __tp_stringify_1(x...)  #x
  43 #define __tp_stringify(x...)    __tp_stringify_1(x)
  44 #endif
  45
  46 #undef TRACEPOINT_EVENT
  47 #define TRACEPOINT_EVENT(name, proto, args, fields)             \
  48         _DEFINE_TRACEPOINT(name)
  49
  50 #undef TRACEPOINT_EVENT_INSTANCE
  51 #define TRACEPOINT_EVENT_INSTANCE(template, name, proto, args)  \
  52         _DEFINE_TRACEPOINT(name)
  53
  54 #undef TRACEPOINT_EVENT_NOARGS
  55 #define TRACEPOINT_EVENT_NOARGS(name, fields)                   \
  56         _DEFINE_TRACEPOINT(name)
  57
  58 #undef TRACEPOINT_EVENT_INSTANCE_NOARGS
  59 #define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name)        \
  60         _DEFINE_TRACEPOINT(name)
  61
  62 #undef TRACE_INCLUDE
  63 #undef __TRACE_INCLUDE
  64
  65 #ifndef TRACE_INCLUDE_FILE
  66 # define TRACE_INCLUDE_FILE TRACE_SYSTEM
  67 # define UNDEF_TRACE_INCLUDE_FILE
  68 #endif
  69
  70 #ifndef TRACE_INCLUDE_PATH
  71 # define __TRACE_INCLUDE(system) <trace/events/system.h>
  72 # define UNDEF_TRACE_INCLUDE_PATH
  73 #else
  74 # define __TRACE_INCLUDE(system) __tp_stringify(TRACE_INCLUDE_PATH/system.h)
  75 #endif
  76
  77 # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
  78
  79 /* Let the trace headers be reread */
  80 #define TRACE_HEADER_MULTI_READ
  81
  82 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
  83
  84 #ifndef CONFIG_NO_EVENT_TRACING
  85 #include <ust/probe.h>
  86 #endif
  87
  88 #undef TRACEPOINT_EVENT
  89 #undef TRACEPOINT_EVENT_CLASS
  90 #undef TRACEPOINT_EVENT_INSTANCE
  91 #undef TRACEPOINT_EVENT_NOARGS
  92 #undef TRACEPOINT_EVENT_CLASS_NOARGS
  93 #undef TRACEPOINT_EVENT_INSTANCE_NOARGS
  94 #undef TRACE_HEADER_MULTI_READ
  95
  96 /* Only undef what we defined in this file */
  97 #ifdef UNDEF_TRACE_INCLUDE_FILE
  98 # undef TRACE_INCLUDE_FILE
  99 # undef UNDEF_TRACE_INCLUDE_FILE
 100 #endif
 101
 102 #ifdef UNDEF_TRACE_INCLUDE_PATH
 103 # undef TRACE_INCLUDE_PATH
 104 # undef UNDEF_TRACE_INCLUDE_PATH
 105 #endif
 106
 107 /* We may be processing more files */
 108 #define TRACEPOINT_CREATE_PROBES
 109
 110 #endif /* TRACEPOINT_CREATE_PROBES */