v4.19.13 snapshot.
diff --git a/tools/perf/ui/setup.c b/tools/perf/ui/setup.c
new file mode 100644
index 0000000..44fe824
--- /dev/null
+++ b/tools/perf/ui/setup.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <pthread.h>
+#include <dlfcn.h>
+
+#include "../util/cache.h"
+#include "../util/debug.h"
+#include "../util/hist.h"
+#include "../util/util.h"
+
+pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
+void *perf_gtk_handle;
+int use_browser = -1;
+
+#define PERF_GTK_DSO "libperf-gtk.so"
+
+#ifdef HAVE_GTK2_SUPPORT
+
+static int setup_gtk_browser(void)
+{
+ int (*perf_ui_init)(void);
+
+ if (perf_gtk_handle)
+ return 0;
+
+ perf_gtk_handle = dlopen(PERF_GTK_DSO, RTLD_LAZY);
+ if (perf_gtk_handle == NULL) {
+ char buf[PATH_MAX];
+ scnprintf(buf, sizeof(buf), "%s/%s", LIBDIR, PERF_GTK_DSO);
+ perf_gtk_handle = dlopen(buf, RTLD_LAZY);
+ }
+ if (perf_gtk_handle == NULL)
+ return -1;
+
+ perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");
+ if (perf_ui_init == NULL)
+ goto out_close;
+
+ if (perf_ui_init() == 0)
+ return 0;
+
+out_close:
+ dlclose(perf_gtk_handle);
+ return -1;
+}
+
+static void exit_gtk_browser(bool wait_for_ok)
+{
+ void (*perf_ui_exit)(bool);
+
+ if (perf_gtk_handle == NULL)
+ return;
+
+ perf_ui_exit = dlsym(perf_gtk_handle, "perf_gtk__exit");
+ if (perf_ui_exit == NULL)
+ goto out_close;
+
+ perf_ui_exit(wait_for_ok);
+
+out_close:
+ dlclose(perf_gtk_handle);
+
+ perf_gtk_handle = NULL;
+}
+#else
+static inline int setup_gtk_browser(void) { return -1; }
+static inline void exit_gtk_browser(bool wait_for_ok __maybe_unused) {}
+#endif
+
+int stdio__config_color(const struct option *opt __maybe_unused,
+ const char *mode, int unset __maybe_unused)
+{
+ perf_use_color_default = perf_config_colorbool("color.ui", mode, -1);
+ return 0;
+}
+
+void setup_browser(bool fallback_to_pager)
+{
+ if (use_browser < 2 && (!isatty(1) || dump_trace))
+ use_browser = 0;
+
+ /* default to TUI */
+ if (use_browser < 0)
+ use_browser = 1;
+
+ switch (use_browser) {
+ case 2:
+ if (setup_gtk_browser() == 0)
+ break;
+ printf("GTK browser requested but could not find %s\n",
+ PERF_GTK_DSO);
+ sleep(1);
+ /* fall through */
+ case 1:
+ use_browser = 1;
+ if (ui__init() == 0)
+ break;
+ /* fall through */
+ default:
+ use_browser = 0;
+ if (fallback_to_pager)
+ setup_pager();
+ break;
+ }
+}
+
+void exit_browser(bool wait_for_ok)
+{
+ switch (use_browser) {
+ case 2:
+ exit_gtk_browser(wait_for_ok);
+ break;
+
+ case 1:
+ ui__exit(wait_for_ok);
+ break;
+
+ default:
+ break;
+ }
+}