perf ui/helpline: Introduce ui_helpline__vshow()
The ui_helpline__vshow() will be used for pr_* functions.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1352911664-24620-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/helpline.c b/tools/perf/ui/helpline.c
index a49bcf3..700fb3c 100644
--- a/tools/perf/ui/helpline.c
+++ b/tools/perf/ui/helpline.c
@@ -16,9 +16,16 @@
{
}
+static int nop_helpline__show(const char *fmt __maybe_unused,
+ va_list ap __maybe_unused)
+{
+ return 0;
+}
+
static struct ui_helpline default_helpline_fns = {
.pop = nop_helpline__pop,
.push = nop_helpline__push,
+ .show = nop_helpline__show,
};
struct ui_helpline *helpline_fns = &default_helpline_fns;
@@ -59,3 +66,8 @@
ui_helpline__pop();
ui_helpline__push(msg);
}
+
+int ui_helpline__vshow(const char *fmt, va_list ap)
+{
+ return helpline_fns->show(fmt, ap);
+}