From: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Date: Wed, 22 Apr 2020 03:30:06 +0000 (-0500)
Subject: rcu: add additional debug logs
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=bf386ae377aa6dafd3043d4102f85f06cd33b111;p=dpdk.git

rcu: add additional debug logs

Added additional debug logs. These helped in debugging RCU defer APIs.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---

diff --git a/lib/librte_rcu/rte_rcu_qsbr.h b/lib/librte_rcu/rte_rcu_qsbr.h
index ca8c0ef7f8..fd4eb52b7f 100644
--- a/lib/librte_rcu/rte_rcu_qsbr.h
+++ b/lib/librte_rcu/rte_rcu_qsbr.h
@@ -718,8 +718,15 @@ rte_rcu_qsbr_check(struct rte_rcu_qsbr *v, uint64_t t, bool wait)
 	RTE_ASSERT(v != NULL);
 
 	/* Check if all the readers have already acknowledged this token */
-	if (likely(t <= v->acked_token))
+	if (likely(t <= v->acked_token)) {
+		__RTE_RCU_DP_LOG(DEBUG,
+			"%s: check: token = %"PRIu64", wait = %d",
+			__func__, t, wait);
+		__RTE_RCU_DP_LOG(DEBUG,
+			"%s: status: least acked token = %"PRIu64"",
+			__func__, v->acked_token);
 		return 1;
+	}
 
 	if (likely(v->num_threads == v->max_threads))
 		return __rte_rcu_qsbr_check_all(v, t, wait);