1 files changed, 39 insertions, 0 deletions

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 973ff74e3640..32ac1165100d 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -600,6 +600,45 @@ void ui_browser__write_graph(struct ui_browser *browser __used, int graph)
         SLsmg_set_char_set(0);
 }
 
+void __ui_browser__line_arrow_up(struct ui_browser *browser, unsigned int column,
+                                 u64 start, u64 end, int start_width)
+{
+        unsigned int row, end_row;
+
+        SLsmg_set_char_set(1);
+
+        if (start < browser->top_idx + browser->height) {
+                row = start - browser->top_idx;
+                ui_browser__gotorc(browser, row, column);
+                SLsmg_write_char(SLSMG_LLCORN_CHAR);
+                ui_browser__gotorc(browser, row, column + 1);
+                SLsmg_draw_hline(start_width);
+
+                if (row-- == 0)
+                        goto out;
+        } else
+                row = browser->height - 1;
+
+        if (end > browser->top_idx)
+                end_row = end - browser->top_idx;
+        else
+                end_row = 0;
+
+        ui_browser__gotorc(browser, end_row, column);
+        SLsmg_draw_vline(row - end_row + 1);
+
+        ui_browser__gotorc(browser, end_row, column);
+        if (end >= browser->top_idx) {
+                SLsmg_write_char(SLSMG_ULCORN_CHAR);
+                ui_browser__gotorc(browser, end_row, column + 1);
+                SLsmg_write_char(SLSMG_HLINE_CHAR);
+                ui_browser__gotorc(browser, end_row, column + 2);
+                SLsmg_write_char(SLSMG_RARROW_CHAR);
+        }
+out:
+        SLsmg_set_char_set(0);
+}
+
 void ui_browser__init(void)
 {
         int i = 0;