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Message-Id: <1444233228-4481-2-git-send-email-santosh.shilimkar@oracle.com> Date: Wed, 7 Oct 2015 08:53:35 -0700 From: Santosh Shilimkar <santosh.shilimkar@...cle.com> To: netdev@...r.kernel.org Cc: davem@...emloft.net, linux-kernel@...r.kernel.org, ssantosh@...nel.org, Santosh Shilimkar <santosh.shilimkar@...cle.com> Subject: [PATCH v4 01/14] RDS: use kfree_rcu in rds_ib_remove_ipaddr synchronize_rcu() slowing down un-necessarily the socket shutdown path. It is used just kfree() the ip addresses in rds_ib_remove_ipaddr() which is perfect usecase for kfree_rcu(); So lets use that to gain some speedup. Signed-off-by: Santosh Shilimkar <ssantosh@...nel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...cle.com> --- net/rds/ib.h | 1 + net/rds/ib_rdma.c | 6 ++---- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/net/rds/ib.h b/net/rds/ib.h index aae60fd..f1fd5ff 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -164,6 +164,7 @@ struct rds_ib_connection { struct rds_ib_ipaddr { struct list_head list; __be32 ipaddr; + struct rcu_head rcu; }; struct rds_ib_device { diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c index 251d1ce..872f523 100644 --- a/net/rds/ib_rdma.c +++ b/net/rds/ib_rdma.c @@ -159,10 +159,8 @@ static void rds_ib_remove_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr) } spin_unlock_irq(&rds_ibdev->spinlock); - if (to_free) { - synchronize_rcu(); - kfree(to_free); - } + if (to_free) + kfree_rcu(to_free, rcu); } int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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