perf ui: Make 'exit_msg' optional in ui__question_window()

We will not need it when refactoring this function to be
non-interactive, so make it optional.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-pnx1dn17bsz7lqt9ty95nnjx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/tui/util.c b/tools/perf/ui/tui/util.c
index fe5e571..5d65ea8 100644 (file)
--- a/tools/perf/ui/tui/util.c
+++ b/tools/perf/ui/tui/util.c
@@ -188,7 +188,9 @@ int ui__question_window(const char *title, const char *text,
        pthread_mutex_lock(&ui__lock);
 
        max_len += 2;
-       nr_lines += 4;
+       nr_lines += 2;
+       if (exit_msg)
+               nr_lines += 2;
        y = SLtt_Screen_Rows / 2 - nr_lines / 2,
        x = SLtt_Screen_Cols / 2 - max_len / 2;
 
@@ -199,14 +201,20 @@ int ui__question_window(const char *title, const char *text,
                SLsmg_write_string((char *)title);
        }
        SLsmg_gotorc(++y, x);
-       nr_lines -= 2;
+       if (exit_msg)
+               nr_lines -= 2;
        max_len -= 2;
        SLsmg_write_wrapped_string((unsigned char *)text, y, x,
                                   nr_lines, max_len, 1);
        SLsmg_gotorc(y + nr_lines - 2, x);
        SLsmg_write_nstring((char *)" ", max_len);
        SLsmg_gotorc(y + nr_lines - 1, x);
-       SLsmg_write_nstring((char *)exit_msg, max_len);
+       if (exit_msg) {
+               SLsmg_gotorc(y + nr_lines - 2, x);
+               SLsmg_write_nstring((char *)" ", max_len);
+               SLsmg_gotorc(y + nr_lines - 1, x);
+               SLsmg_write_nstring((char *)exit_msg, max_len);
+       }
        SLsmg_refresh();
 
        pthread_mutex_unlock(&ui__lock);