tracing: new format for specialized trace points

[linux-2.6-block.git] / kernel / trace / trace_events_stage_2.h

diff --git a/kernel/trace/trace_events_stage_2.h b/kernel/trace/trace_events_stage_2.h
index d24a97e74aea28c1d265c0fbe0ff4ea9c46173da..d91bf4c566613eaebd8b403edceb3b947fe9ea00 100644 (file)
--- a/kernel/trace/trace_events_stage_2.h
+++ b/kernel/trace/trace_events_stage_2.h
@@ -20,7 +20,7 @@
  *
  *     field = (typeof(field))entry;
  *
- *     ret = trace_seq_printf(s, <TPRAWFMT> "%s", <ARGS> "\n");
+ *     ret = trace_seq_printf(s, <TP_RAW_FMT> "%s", <ARGS> "\n");
  *     if (!ret)
  *             return TRACE_TYPE_PARTIAL_LINE;
  *
@@ -32,23 +32,14 @@
  * in binary.
  */
 
-#undef TRACE_STRUCT
-#define TRACE_STRUCT(args...) args
+#undef __entry
+#define __entry field
 
-#undef TRACE_FIELD
-#define TRACE_FIELD(type, item, assign) \
-       field->item,
+#undef TP_printk
+#define TP_printk(fmt, args...) fmt "\n", args
 
-#undef TRACE_FIELD_SPECIAL
-#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
-       field->item,
-
-
-#undef TPRAWFMT
-#define TPRAWFMT(args...)      args
-
-#undef TRACE_EVENT_FORMAT
-#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt)     \
+#undef TRACE_EVENT
+#define TRACE_EVENT(call, proto, args, tstruct, print, assign)         \
 enum print_line_t                                                      \
 ftrace_raw_output_##call(struct trace_iterator *iter, int flags)       \
 {                                                                      \
@@ -66,14 +57,76 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags)    \
                                                                        \
        field = (typeof(field))entry;                                   \
                                                                        \
-       ret = trace_seq_printf(s, tpfmt "%s", tstruct "\n");            \
+       ret = trace_seq_printf(s, print);                               \
        if (!ret)                                                       \
                return TRACE_TYPE_PARTIAL_LINE;                         \
                                                                        \
        return TRACE_TYPE_HANDLED;                                      \
 }
-
+       
 #include <trace/trace_event_types.h>
 
-#include "trace_format.h"
+/*
+ * Setup the showing format of trace point.
+ *
+ * int
+ * ftrace_format_##call(struct trace_seq *s)
+ * {
+ *     struct ftrace_raw_##call field;
+ *     int ret;
+ *
+ *     ret = trace_seq_printf(s, #type " " #item ";"
+ *                            " size:%d; offset:%d;\n",
+ *                            sizeof(field.type),
+ *                            offsetof(struct ftrace_raw_##call,
+ *                                     item));
+ *
+ * }
+ */
+
+#undef TP_STRUCT__entry
+#define TP_STRUCT__entry(args...) args
+
+#undef __field
+#define __field(type, item)                                    \
+       ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t"      \
+                              "offset:%u;\tsize:%u;\n",                \
+                              (unsigned int)offsetof(typeof(field), item), \
+                              (unsigned int)sizeof(field.item));       \
+       if (!ret)                                                       \
+               return 0;
+
+#undef __array
+#define __array(type, item, len)                                               \
+       ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t"    \
+                              "offset:%u;\tsize:%u;\n",                \
+                              (unsigned int)offsetof(typeof(field), item), \
+                              (unsigned int)sizeof(field.item));       \
+       if (!ret)                                                       \
+               return 0;
+
+#undef __entry
+#define __entry "REC"
+
+#undef TP_printk
+#define TP_printk(fmt, args...) "%s, %s\n", #fmt, #args
+
+#undef TP_fast_assign
+#define TP_fast_assign(args...) args
+
+#undef TRACE_EVENT
+#define TRACE_EVENT(call, proto, args, tstruct, print, func)           \
+static int                                                             \
+ftrace_format_##call(struct trace_seq *s)                              \
+{                                                                      \
+       struct ftrace_raw_##call field;                                 \
+       int ret;                                                        \
+                                                                       \
+       tstruct;                                                        \
+                                                                       \
+       trace_seq_printf(s, "\nprint fmt: " print);                     \
+                                                                       \
+       return ret;                                                     \
+}
+
 #include <trace/trace_event_types.h>