perf ui browser: Introduce ui_browser__printf()

To remove direct access to libslang functions, with the immediate goal
of implementing horizontal scrolling at the ui_browser level, but also
because we may at some point want to implement ui_browser with other UIs
in addition to the current libslang implementation.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-w0niblabqrkecs4o0eogfy6c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 5c730ab553e9..c6c7e5189214 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -52,6 +52,15 @@ void ui_browser__write_nstring(struct ui_browser *browser __maybe_unused, const
         slsmg_write_nstring(msg, width);
 }
 
+void ui_browser__printf(struct ui_browser *browser __maybe_unused, const char *fmt, ...)
+{
+        va_list args;
+
+        va_start(args, fmt);
+        slsmg_vprintf(fmt, args);
+        va_end(args);
+}
+
 static struct list_head *
 ui_browser__list_head_filter_entries(struct ui_browser *browser,
                                      struct list_head *pos)