From 1635bb548f846804af3054872fbd1395783ac03e Mon Sep 17 00:00:00 2001
From: Zhu Yanjun <yanjun.zhu@oracle.com>
Date: Sun, 16 Sep 2018 22:49:30 -0400
Subject: [PATCH] net: rds: use memset to optimize the recv
The function rds_inc_init is in recv process. To use memset can optimize
the function rds_inc_init.
The test result:
Before:
1) + 24.950 us | rds_inc_init [rds]();
After:
1) + 10.990 us | rds_inc_init [rds]();
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/rds/recv.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 12719653188a3..727639dac8a7f 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -43,8 +43,6 @@
void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
struct in6_addr *saddr)
{
- int i;
-
refcount_set(&inc->i_refcount, 1);
INIT_LIST_HEAD(&inc->i_item);
inc->i_conn = conn;
@@ -52,8 +50,7 @@ void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
inc->i_rdma_cookie = 0;
inc->i_rx_tstamp = ktime_set(0, 0);
- for (i = 0; i < RDS_RX_MAX_TRACES; i++)
- inc->i_rx_lat_trace[i] = 0;
+ memset(inc->i_rx_lat_trace, 0, sizeof(inc->i_rx_lat_trace));
}
EXPORT_SYMBOL_GPL(rds_inc_init);
--
2.30.2