app/eventdev: remove unnecessary barrier from order test

For "order_launch_lcores" function, wmb after that the main lcore
updates the variable "t->err", which represents the end of the test
signal, is unnecessary. Because after the main lcore updates this
signal variable, it will jump out of the launch function loop, and wait
other lcores stop or return error in the main function(evt_main.c).
During this time, there is no storing operation and thus no need for
wmb.

Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>

diff --git a/app/test-eventdev/test_order_common.c b/app/test-eventdev/test_order_common.c
index 04456d56db63dbc0503f4227131d4c37bc269fa5..d7760061ba75dab87ee8db3f756592569bea1000 100644 (file)
--- a/app/test-eventdev/test_order_common.c
+++ b/app/test-eventdev/test_order_common.c
@@ -308,7 +308,6 @@ order_launch_lcores(struct evt_test *test, struct evt_options *opt,
                                rte_event_dev_dump(opt->dev_id, stdout);
                                evt_err("No schedules for seconds, deadlock");
                                t->err = true;
-                               rte_smp_wmb();
                                break;
                        }
                        old_remaining = remaining;