event/sw: add unlikely branch predict

For most run cases 'sw->started' holds true. Adding a branch prediction
suggestion to compiler helps as this is first conditional check just
after entering the function.

Signed-off-by: Vipin Varghese <vipin.varghese@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>

diff --git a/drivers/event/sw/sw_evdev_scheduler.c b/drivers/event/sw/sw_evdev_scheduler.c
index 3106eb3..17bd4c0 100644 (file)
--- a/drivers/event/sw/sw_evdev_scheduler.c
+++ b/drivers/event/sw/sw_evdev_scheduler.c
@@ -508,7 +508,7 @@ sw_event_schedule(struct rte_eventdev *dev)
        uint32_t i;
 
        sw->sched_called++;
-       if (!sw->started)
+       if (unlikely(!sw->started))
                return;
 
        do {