| Message ID | 20180914084538.11666-1-yanjun.zhu@oracle.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [1/1] net: rds: use memset to optimize the recv | expand |
On 9/14/2018 1:45 AM, Zhu Yanjun wrote: > 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](); > > Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> > --- Looks good. Thanks !! Acked-by: Santosh Shilimkar<santosh.shilimkar@oracle.com>
From: Zhu Yanjun <yanjun.zhu@oracle.com> Date: Fri, 14 Sep 2018 04:45:38 -0400 > 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](); > > Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> This doesn't apply cleanly to net-next, please respin.
OK. I will send V2 for net-next very soon. Zhu Yanjun On Mon, Sep 17, 2018 at 6:38 AM David Miller <davem@davemloft.net> wrote: > > From: Zhu Yanjun <yanjun.zhu@oracle.com> > Date: Fri, 14 Sep 2018 04:45:38 -0400 > > > 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](); > > > > Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> > > This doesn't apply cleanly to net-next, please respin.
diff --git a/net/rds/recv.c b/net/rds/recv.c index 504cd6bcc54c..a9399ddbb7bf 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; @@ -53,8 +51,7 @@ void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn, inc->i_rx_tstamp.tv_sec = 0; inc->i_rx_tstamp.tv_usec = 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);
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](); Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> --- net/rds/recv.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)