Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / ui / helpline.c

diff --git a/kernel/tools/perf/ui/helpline.c b/kernel/tools/perf/ui/helpline.c
new file mode 100644 (file)
index 0000000..700fb3c
--- /dev/null
+++ b/kernel/tools/perf/ui/helpline.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../debug.h"
+#include "helpline.h"
+#include "ui.h"
+
+char ui_helpline__current[512];
+
+static void nop_helpline__pop(void)
+{
+}
+
+static void nop_helpline__push(const char *msg __maybe_unused)
+{
+}
+
+static int nop_helpline__show(const char *fmt __maybe_unused,
+                              va_list ap __maybe_unused)
+{
+       return 0;
+}
+
+static struct ui_helpline default_helpline_fns = {
+       .pop    = nop_helpline__pop,
+       .push   = nop_helpline__push,
+       .show   = nop_helpline__show,
+};
+
+struct ui_helpline *helpline_fns = &default_helpline_fns;
+
+void ui_helpline__pop(void)
+{
+       helpline_fns->pop();
+}
+
+void ui_helpline__push(const char *msg)
+{
+       helpline_fns->push(msg);
+}
+
+void ui_helpline__vpush(const char *fmt, va_list ap)
+{
+       char *s;
+
+       if (vasprintf(&s, fmt, ap) < 0)
+               vfprintf(stderr, fmt, ap);
+       else {
+               ui_helpline__push(s);
+               free(s);
+       }
+}
+
+void ui_helpline__fpush(const char *fmt, ...)
+{
+       va_list ap;
+
+       va_start(ap, fmt);
+       ui_helpline__vpush(fmt, ap);
+       va_end(ap);
+}
+
+void ui_helpline__puts(const char *msg)
+{
+       ui_helpline__pop();
+       ui_helpline__push(msg);
+}
+
+int ui_helpline__vshow(const char *fmt, va_list ap)
+{
+       return helpline_fns->show(fmt, ap);
+}