1 files changed, 22 insertions, 3 deletions

diff --git a/tools/perf/util/ui/browser.c b/tools/perf/util/ui/browser.c
index 8bc010edca25..611219f80680 100644
--- a/tools/perf/util/ui/browser.c
+++ b/tools/perf/util/ui/browser.c
@@ -1,4 +1,5 @@
 #include "libslang.h"
+#include "ui.h"
 #include <linux/compiler.h>
 #include <linux/list.h>
 #include <linux/rbtree.h>
@@ -156,6 +157,20 @@ void ui_browser__add_exit_keys(struct ui_browser *self, int keys[])
         }
 }
 
+void __ui_browser__show_title(struct ui_browser *browser, const char *title)
+{
+        SLsmg_gotorc(0, 0);
+        ui_browser__set_color(browser, NEWT_COLORSET_ROOT);
+        slsmg_write_nstring(title, browser->width);
+}
+
+void ui_browser__show_title(struct ui_browser *browser, const char *title)
+{
+        pthread_mutex_lock(&ui__lock);
+        __ui_browser__show_title(browser, title);
+        pthread_mutex_unlock(&ui__lock);
+}
+
 int ui_browser__show(struct ui_browser *self, const char *title,
                      const char *helpline, ...)
 {
@@ -178,9 +193,8 @@ int ui_browser__show(struct ui_browser *self, const char *title,
         if (self->sb == NULL)
                 return -1;
 
-        SLsmg_gotorc(0, 0);
-        ui_browser__set_color(self, NEWT_COLORSET_ROOT);
-        slsmg_write_nstring(title, self->width);
+        pthread_mutex_lock(&ui__lock);
+        __ui_browser__show_title(self, title);
 
         ui_browser__add_exit_keys(self, keys);
         newtFormAddComponent(self->form, self->sb);
@@ -188,25 +202,30 @@ int ui_browser__show(struct ui_browser *self, const char *title,
         va_start(ap, helpline);
         ui_helpline__vpush(helpline, ap);
         va_end(ap);
+        pthread_mutex_unlock(&ui__lock);
         return 0;
 }
 
 void ui_browser__hide(struct ui_browser *self)
 {
+        pthread_mutex_lock(&ui__lock);
         newtFormDestroy(self->form);
         self->form = NULL;
         ui_helpline__pop();
+        pthread_mutex_unlock(&ui__lock);
 }
 
 int ui_browser__refresh(struct ui_browser *self)
 {
         int row;
 
+        pthread_mutex_lock(&ui__lock);
         newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
         row = self->refresh(self);
         ui_browser__set_color(self, HE_COLORSET_NORMAL);
         SLsmg_fill_region(self->y + row, self->x,
                           self->height - row, self->width, ' ');
+        pthread_mutex_unlock(&ui__lock);
 
         return 0;
 }