X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_rcu%2Frte_rcu_qsbr.c;h=2f3fad776ee727e2ea9a45c1d8bc8546d68b0487;hb=39b88344e36426bea97cb131fb8ff5b4348e4676;hp=a6b66ac09bcd0903181086ee3fb4350b0bd148c3;hpb=8ac3591694e105d47968f5f29b8c19511f21e41c;p=dpdk.git

diff --git a/lib/librte_rcu/rte_rcu_qsbr.c b/lib/librte_rcu/rte_rcu_qsbr.c
index a6b66ac09b..2f3fad776e 100644
--- a/lib/librte_rcu/rte_rcu_qsbr.c
+++ b/lib/librte_rcu/rte_rcu_qsbr.c
@@ -72,6 +72,7 @@ rte_rcu_qsbr_init(struct rte_rcu_qsbr *v, uint32_t max_threads)
 			__RTE_QSBR_THRID_ARRAY_ELM_SIZE) /
 			__RTE_QSBR_THRID_ARRAY_ELM_SIZE;
 	v->token = __RTE_QSBR_CNT_INIT;
+	v->acked_token = __RTE_QSBR_CNT_INIT - 1;
 
 	return 0;
 }
@@ -157,7 +158,7 @@ rte_rcu_qsbr_thread_unregister(struct rte_rcu_qsbr *v, unsigned int thread_id)
 	/* Check if the thread is already unregistered */
 	old_bmap = __atomic_load_n(__RTE_QSBR_THRID_ARRAY_ELM(v, i),
 					__ATOMIC_RELAXED);
-	if (old_bmap & ~(1UL << id))
+	if (!(old_bmap & (1UL << id)))
 		return 0;
 
 	do {
@@ -174,7 +175,7 @@ rte_rcu_qsbr_thread_unregister(struct rte_rcu_qsbr *v, unsigned int thread_id)
 		if (success)
 			__atomic_fetch_sub(&v->num_threads,
 						1, __ATOMIC_RELAXED);
-		else if (old_bmap & ~(1UL << id))
+		else if (!(old_bmap & (1UL << id)))
 			/* Someone else unregistered this thread.
 			 * Counter should not be incremented.
 			 */
@@ -244,6 +245,9 @@ rte_rcu_qsbr_dump(FILE *f, struct rte_rcu_qsbr *v)
 	fprintf(f, "  Token = %"PRIu64"\n",
 			__atomic_load_n(&v->token, __ATOMIC_ACQUIRE));
 
+	fprintf(f, "  Least Acknowledged Token = %"PRIu64"\n",
+			__atomic_load_n(&v->acked_token, __ATOMIC_ACQUIRE));
+
 	fprintf(f, "Quiescent State Counts for readers:\n");
 	for (i = 0; i < v->num_elems; i++) {
 		bmap = __atomic_load_n(__RTE_QSBR_THRID_ARRAY_ELM(v, i),