tools lib traceevent: Use static functions in jbd2 plugin

There's no need for following functions to be global:

  process_jbd2_dev_to_name
  process_jiffies_to_msecs

Make them static.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386076182-14484-24-git-send-email-jolsa@redhat.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/lib/traceevent/plugin_jbd2.c

@@ -29,8 +29,9 @@
 #define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))
 #define MINOR(dev)	((unsigned int) ((dev) & MINORMASK))
 
-unsigned long long process_jbd2_dev_to_name(struct trace_seq *s,
-					    unsigned long long *args)
+static unsigned long long
+process_jbd2_dev_to_name(struct trace_seq *s,
+			 unsigned long long *args)
 {
 	unsigned int dev = args[0];
 
@@ -38,8 +39,9 @@ unsigned long long process_jbd2_dev_to_name(struct trace_seq *s,
 	return 0;
 }
 
-unsigned long long process_jiffies_to_msecs(struct trace_seq *s,
-					    unsigned long long *args)
+static unsigned long long
+process_jiffies_to_msecs(struct trace_seq *s,
+			 unsigned long long *args)
 {
 	unsigned long long jiffies = args[0];