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net: rds: use memset to optimize the recv

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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>
This commit is contained in:
Zhu Yanjun 2018-09-16 22:49:30 -04:00 committed by David S. Miller
parent 0185e2e69f
commit 1635bb548f
1 changed files with 1 additions and 4 deletions
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5
net/rds/recv.c
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@ -43,8 +43,6 @@
void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn, void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
struct in6_addr *saddr) struct in6_addr *saddr)
{ {
int i;
refcount_set(&inc->i_refcount, 1); refcount_set(&inc->i_refcount, 1);
INIT_LIST_HEAD(&inc->i_item); INIT_LIST_HEAD(&inc->i_item);
inc->i_conn = conn; 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_rdma_cookie = 0;
inc->i_rx_tstamp = ktime_set(0, 0); inc->i_rx_tstamp = ktime_set(0, 0);
for (i = 0; i < RDS_RX_MAX_TRACES; i++) memset(inc->i_rx_lat_trace, 0, sizeof(inc->i_rx_lat_trace));
inc->i_rx_lat_trace[i] = 0;
} }
EXPORT_SYMBOL_GPL(rds_inc_init); EXPORT_SYMBOL_GPL(rds_inc_init);