timer: make the timer offset error a bit more user-friendly

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

src/timer.c

@@ -93,7 +93,7 @@ libinput_timer_set_flags(struct libinput_timer *timer,
 	if (expire < now) {
 		if ((flags & TIMER_FLAG_ALLOW_NEGATIVE) == 0)
 			log_bug_client(timer->libinput,
-				       "timer %s: offset negative (-%dms)\n",
+				       "timer %s: scheduled expiry is in the past (-%dms), your system is too slow\n",
 				       timer->timer_name,
 				       us2ms(now - expire));
 	} else if ((expire - now) > ms2us(5000)) {

test/test-misc.c

@@ -660,7 +660,7 @@ static void timer_offset_warning(struct libinput *libinput,
 	int *warning_triggered = (int*)libinput_get_user_data(libinput);
 
 	if (priority == LIBINPUT_LOG_PRIORITY_ERROR &&
-	    strstr(format, "offset negative"))
+	    strstr(format, "scheduled expiry is in the past"))
 		(*warning_triggered)++;
 }