ui/vdagent: improve vdagent_fe_open() trace

Place the trace when the function enters, with arg value.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240717171541.201525-3-marcandre.lureau@redhat.com>

ui/trace-events

@@ -132,7 +132,7 @@ xkeymap_keymap(const char *name) "keymap '%s'"
 clipboard_check_serial(int cur, int recv, bool ok) "cur:%d recv:%d %d"
 
 # vdagent.c
-vdagent_open(void) ""
+vdagent_fe_open(bool fe_open) "fe_open=%d"
 vdagent_close(void) ""
 vdagent_disconnect(void) ""
 vdagent_send(const char *name) "msg %s"

ui/vdagent.c

@@ -872,6 +872,8 @@ static void vdagent_chr_set_fe_open(struct Chardev *chr, int fe_open)
 {
     VDAgentChardev *vd = QEMU_VDAGENT_CHARDEV(chr);
 
+    trace_vdagent_fe_open(fe_open);
+
     if (!fe_open) {
         trace_vdagent_close();
         vdagent_disconnect(vd);
@@ -881,7 +883,6 @@ static void vdagent_chr_set_fe_open(struct Chardev *chr, int fe_open)
         return;
     }
 
-    trace_vdagent_open();
 }
 
 static void vdagent_chr_parse(QemuOpts *opts, ChardevBackend *backend,