git.oblomov.eu Git - linux-2.6/blob - kernel/trace/trace_events_stage_2.h

   1 /*
   2  * Stage 2 of the trace events.
   3  *
   4  * Override the macros in <trace/trace_event_types.h> to include the following:
   5  *
   6  * enum print_line_t
   7  * ftrace_raw_output_<call>(struct trace_iterator *iter, int flags)
   8  * {
   9  *      struct trace_seq *s = &iter->seq;
  10  *      struct ftrace_raw_<call> *field; <-- defined in stage 1
  11  *      struct trace_entry *entry;
  12  *      int ret;
  13  *
  14  *      entry = iter->ent;
  15  *
  16  *      if (entry->type != event_<call>.id) {
  17  *              WARN_ON_ONCE(1);
  18  *              return TRACE_TYPE_UNHANDLED;
  19  *      }
  20  *
  21  *      field = (typeof(field))entry;
  22  *
  23  *      ret = trace_seq_printf(s, <TPRAWFMT> "%s", <ARGS> "\n");
  24  *      if (!ret)
  25  *              return TRACE_TYPE_PARTIAL_LINE;
  26  *
  27  *      return TRACE_TYPE_HANDLED;
  28  * }
  29  *
  30  * This is the method used to print the raw event to the trace
  31  * output format. Note, this is not needed if the data is read
  32  * in binary.
  33  */
  34
  35 #undef TRACE_STRUCT
  36 #define TRACE_STRUCT(args...) args
  37
  38 #undef TRACE_FIELD
  39 #define TRACE_FIELD(type, item, assign) \
  40         field->item,
  41
  42
  43 #undef TPRAWFMT
  44 #define TPRAWFMT(args...)       args
  45
  46 #undef TRACE_EVENT_FORMAT
  47 #define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt)      \
  48 enum print_line_t                                                       \
  49 ftrace_raw_output_##call(struct trace_iterator *iter, int flags)        \
  50 {                                                                       \
  51         struct trace_seq *s = &iter->seq;                               \
  52         struct ftrace_raw_##call *field;                                \
  53         struct trace_entry *entry;                                      \
  54         int ret;                                                        \
  55                                                                         \
  56         entry = iter->ent;                                              \
  57                                                                         \
  58         if (entry->type != event_##call.id) {                           \
  59                 WARN_ON_ONCE(1);                                        \
  60                 return TRACE_TYPE_UNHANDLED;                            \
  61         }                                                               \
  62                                                                         \
  63         field = (typeof(field))entry;                                   \
  64                                                                         \
  65         ret = trace_seq_printf(s, tpfmt "%s", tstruct "\n");            \
  66         if (!ret)                                                       \
  67                 return TRACE_TYPE_PARTIAL_LINE;                         \
  68                                                                         \
  69         return TRACE_TYPE_HANDLED;                                      \
  70 }
  71
  72 #include <trace/trace_event_types.h>