samples/trace_event: Add '__rel_loc' using sample event

[linux-2.6-block.git] / samples / trace_events / trace-events-sample.h

diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
index e61471ab7d14184763a0e9c729dab71ca14916b1..5ab74fc9a2dfe83e612ee03238d142f9812f90e8 100644 (file)
--- a/samples/trace_events/trace-events-sample.h
+++ b/samples/trace_events/trace-events-sample.h
@@ -506,6 +506,39 @@ DEFINE_EVENT_PRINT(foo_template, foo_with_template_print,
        TP_ARGS(foo, bar),
        TP_printk("bar %s %d", __get_str(foo), __entry->bar));
 
+/*
+ * There are yet another __rel_loc dynamic data attribute. If you
+ * use __rel_dynamic_array() and __rel_string() etc. macros, you
+ * can use this attribute. There is no difference from the viewpoint
+ * of functionality with/without 'rel' but the encoding is a bit
+ * different. This is expected to be used with user-space event,
+ * there is no reason that the kernel event use this, but only for
+ * testing.
+ */
+
+TRACE_EVENT(foo_rel_loc,
+
+       TP_PROTO(const char *foo, int bar, unsigned long *mask),
+
+       TP_ARGS(foo, bar, mask),
+
+       TP_STRUCT__entry(
+               __rel_string(   foo,    foo     )
+               __field(        int,    bar     )
+               __rel_bitmask(  bitmask,
+                       BITS_PER_BYTE * sizeof(unsigned long)   )
+       ),
+
+       TP_fast_assign(
+               __assign_rel_str(foo, foo);
+               __entry->bar = bar;
+               __assign_rel_bitmask(bitmask, mask,
+                       BITS_PER_BYTE * sizeof(unsigned long));
+       ),
+
+       TP_printk("foo_rel_loc %s, %d, %s", __get_rel_str(foo), __entry->bar,
+                 __get_rel_bitmask(bitmask))
+);
 #endif
 
 /***** NOTICE! The #if protection ends here. *****/