tracing: Update the TRACE_EVENT fields available in the sample code

The sample code in samples/trace_events/ is extremely out of date and does
not show all the new fields that have been added since the sample code
was written. As most people are unaware of these new fields, adding sample
code and explanations of those fields should help out.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 18 insertions, 1 deletions

diff --git a/samples/trace_events/trace-events-sample.c b/samples/trace_events/trace-events-sample.c
index aabc4e970911..16c15c08ed38 100644
--- a/samples/trace_events/trace-events-sample.c
+++ b/samples/trace_events/trace-events-sample.c
@@ -10,12 +10,29 @@
 #define CREATE_TRACE_POINTS
 #include "trace-events-sample.h"
 
+static const char *random_strings[] = {
+	"Mother Goose",
+	"Snoopy",
+	"Gandalf",
+	"Frodo",
+	"One ring to rule them all"
+};
 
 static void simple_thread_func(int cnt)
 {
+	int array[6];
+	int len = cnt % 5;
+	int i;
+
 	set_current_state(TASK_INTERRUPTIBLE);
 	schedule_timeout(HZ);
-	trace_foo_bar("hello", cnt);
+
+	for (i = 0; i < len; i++)
+		array[i] = i + 1;
+	array[i] = 0;
+
+	trace_foo_bar("hello", cnt, array, random_strings[len],
+		      tsk_cpus_allowed(current));
 }
 
 static int simple_thread(void *arg)