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[v4,4/4] lib/rcu: add additional debug logs

Message ID 20200403184142.7729-5-honnappa.nagarahalli@arm.com
State Superseded
Headers show
Series Add RCU reclamation APIs | expand

Commit Message

Honnappa Nagarahalli April 3, 2020, 6:41 p.m. UTC 
Added additional debug logs. These helped in debugging RCU
defer APIs.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>

---
 lib/librte_rcu/rte_rcu_qsbr.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

-- 
2.17.1
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Patch

diff --git a/lib/librte_rcu/rte_rcu_qsbr.h b/lib/librte_rcu/rte_rcu_qsbr.h
index 213f9b029..dd51e7e35 100644
--- a/lib/librte_rcu/rte_rcu_qsbr.h
+++ b/lib/librte_rcu/rte_rcu_qsbr.h
@@ -716,8 +716,15 @@  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);