[rds-devel] [PATCH 09/19] Add infrastructure for RDS global statistics per network namespace.

[Jie Liu]

Signed-off-by: Jie Liu <jeff.liu at oracle.com>
---
 include/net/netns/rds.h |    3 +++
 net/rds/af_rds.c        |    9 ++++++++-
 2 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/include/net/netns/rds.h b/include/net/netns/rds.h
index 6712fe3..76afd59 100644
--- a/include/net/netns/rds.h
+++ b/include/net/netns/rds.h
@@ -19,6 +19,9 @@ struct netns_rds {
 	spinlock_t rds_cong_lock;
 	struct list_head rds_cong_monitor;
 	rwlock_t rds_cong_monitor_lock;
+
+	/* global statistics */
+	struct rds_statistics __percpu *rds_stats;
 };
 
 #endif
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index cde87df..41e1d95 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -538,20 +538,27 @@ out:
  */
 static int __net_init rds_pernet_init(struct net *net)
 {
-	int ret;
+	int ret = -ENOMEM;
 
 	INIT_LIST_HEAD(&net->rds.rds_sock_list);
 	spin_lock_init(&net->rds.rds_sock_lock);
 	net->rds.rds_sock_count = 0;
 
+	net->rds.rds_stats = alloc_percpu(struct rds_statistics);
+	if (!net->rds.rds_stats)
+		goto out;
+
 	ret = rds_cong_init(net);
 
+out:
 	return ret;
 }
 
 static void __net_exit rds_pernet_exit(struct net *net)
 {
 	rds_cong_exit(net);
+	free_percpu(net->rds.rds_stats);
+	net->rds.rds_stats = NULL;
 }
 
 static struct pernet_operations __net_initdata rds_net_ops = {
-- 
1.7.4.1