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* [dpdk-stable] [dpdk-dev] [PATCH] event/octeontx: fix missing enqueue smp barrier
@ 2017-06-09 13:16 Jerin Jacob
  2017-06-13 23:06 ` Eads, Gage
  0 siblings, 1 reply; 3+ messages in thread
From: Jerin Jacob @ 2017-06-09 13:16 UTC (permalink / raw)
  To: dev; +Cc: hemant.agrawal, gage.eads, harry.van.haaren, Jerin Jacob, stable

Typically RTE_EVENT_OP_NEW issued by the producer
lcore. To reflect the write changes issued by the
producer lcore on worker lcore, an SMP write barrier
is required on producer enqueue. Fixing the missing
rte_smp_wmb() on enqueue with RTE_EVENT_OP_NEW.

CC: stable@dpdk.org
Fixes: f10d322eff76 ("event/octeontx: support worker enqueue")

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
 drivers/event/octeontx/ssovf_worker.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/event/octeontx/ssovf_worker.c b/drivers/event/octeontx/ssovf_worker.c
index ad3fe684d..74e89015d 100644
--- a/drivers/event/octeontx/ssovf_worker.c
+++ b/drivers/event/octeontx/ssovf_worker.c
@@ -179,6 +179,7 @@ ssows_enq(void *port, const struct rte_event *ev)
 
 	switch (ev->op) {
 	case RTE_EVENT_OP_NEW:
+		rte_smp_wmb();
 		ssows_new_event(ws, ev);
 		break;
 	case RTE_EVENT_OP_FORWARD:
-- 
2.13.1

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2017-06-20 14:19 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2017-06-09 13:16 [dpdk-stable] [dpdk-dev] [PATCH] event/octeontx: fix missing enqueue smp barrier Jerin Jacob
2017-06-13 23:06 ` Eads, Gage
2017-06-20 14:19   ` Jerin Jacob

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