perf ui browser: Add vprintf() method
We'll need it for some callbacks for the upcoming
annotation__line_print() routines.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-t3qiobj4ua38xzsq8cyw9ky5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index 03e1734..9e69c6a 100644
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -3,6 +3,7 @@
#define _PERF_UI_BROWSER_H_ 1
#include <linux/types.h>
+#include <stdarg.h>
#define HE_COLORSET_TOP 50
#define HE_COLORSET_MEDIUM 51
@@ -40,6 +41,7 @@ void ui_browser__reset_index(struct ui_browser *browser);
void ui_browser__gotorc(struct ui_browser *browser, int y, int x);
void ui_browser__write_nstring(struct ui_browser *browser, const char *msg,
unsigned int width);
+void ui_browser__vprintf(struct ui_browser *browser, const char *fmt, va_list args);
void ui_browser__printf(struct ui_browser *browser, const char *fmt, ...);
void ui_browser__write_graph(struct ui_browser *browser, int graph);
void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,