include/trace/define_trace.h

   1 /*
   2  * Trace files that want to automate creationg of all tracepoints defined
   3  * in their file should include this file. The following are macros that the
   4  * trace file may define:
   5  *
   6  * TRACE_SYSTEM defines the system the tracepoint is for
   7  *
   8  * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
   9  *     This macro may be defined to tell define_trace.h what file to include.
  10  *     Note, leave off the ".h".
  11  *
  12  * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
  13  *     then this macro can define the path to use. Note, the path is relative to
  14  *     define_trace.h, not the file including it. Full path names for out of tree
  15  *     modules must be used.
  16  */
  17
  18 #ifdef CREATE_TRACE_POINTS
  19
  20 /* Prevent recursion */
  21 #undef CREATE_TRACE_POINTS
  22
  23 #include <linux/stringify.h>
  24
  25 #undef TRACE_EVENT
  26 #define TRACE_EVENT(name, proto, args, tstruct, assign, print)  \
  27         DEFINE_TRACE(name)
  28
  29 #undef TRACE_EVENT_FN
  30 #define TRACE_EVENT_FN(name, proto, args, tstruct,              \
  31                 assign, print, reg, unreg)                      \
  32         DEFINE_TRACE_FN(name, reg, unreg)
  33
  34 #undef DECLARE_TRACE
  35 #define DECLARE_TRACE(name, proto, args)        \
  36         DEFINE_TRACE(name)
  37
  38 #undef TRACE_INCLUDE
  39 #undef __TRACE_INCLUDE
  40
  41 #ifndef TRACE_INCLUDE_FILE
  42 # define TRACE_INCLUDE_FILE TRACE_SYSTEM
  43 # define UNDEF_TRACE_INCLUDE_FILE
  44 #endif
  45
  46 #ifndef TRACE_INCLUDE_PATH
  47 # define __TRACE_INCLUDE(system) <trace/events/system.h>
  48 # define UNDEF_TRACE_INCLUDE_PATH
  49 #else
  50 # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
  51 #endif
  52
  53 # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
  54
  55 /* Let the trace headers be reread */
  56 #define TRACE_HEADER_MULTI_READ
  57
  58 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
  59
  60 #ifdef CONFIG_EVENT_TRACING
  61 #include <trace/ftrace.h>
  62 #endif
  63
  64 #undef TRACE_EVENT
  65 #undef TRACE_EVENT_FN
  66 #undef TRACE_HEADER_MULTI_READ
  67
  68 /* Only undef what we defined in this file */
  69 #ifdef UNDEF_TRACE_INCLUDE_FILE
  70 # undef TRACE_INCLUDE_FILE
  71 # undef UNDEF_TRACE_INCLUDE_FILE
  72 #endif
  73
  74 #ifdef UNDEF_TRACE_INCLUDE_PATH
  75 # undef TRACE_INCLUDE_PATH
  76 # undef UNDEF_TRACE_INCLUDE_PATH
  77 #endif
  78
  79 /* We may be processing more files */
  80 #define CREATE_TRACE_POINTS
  81
  82 #endif /* CREATE_TRACE_POINTS */