bonding: call slave_last_rx() only once per slave

Simple cleanup to not call slave_last_rx() on every time function. It won't
give any measurable boost - but looks cleaner and easier to understand.

There are no time-consuming functions in between these calls, so it's safe
to call it in the beginning only once.

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 476df7d..cc13bfe 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2764,7 +2764,7 @@ re_arm:
  */
 static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 {
-       unsigned long trans_start;
+       unsigned long trans_start, last_rx;
        struct slave *slave;
        int extra_ticks;
        int commit = 0;
@@ -2778,11 +2778,12 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 
        bond_for_each_slave(bond, slave) {
                slave->new_link = BOND_LINK_NOCHANGE;
+               last_rx = slave_last_rx(bond, slave);
 
                if (slave->link != BOND_LINK_UP) {
                        if (time_in_range(jiffies,
-                               slave_last_rx(bond, slave) - delta_in_ticks,
-                               slave_last_rx(bond, slave) + delta_in_ticks + extra_ticks)) {
+                               last_rx - delta_in_ticks,
+                               last_rx + delta_in_ticks + extra_ticks)) {
 
                                slave->new_link = BOND_LINK_UP;
                                commit++;
@@ -2817,8 +2818,8 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
                if (!bond_is_active_slave(slave) &&
                    !bond->current_arp_slave &&
                    !time_in_range(jiffies,
-                       slave_last_rx(bond, slave) - delta_in_ticks,
-                       slave_last_rx(bond, slave) + 3 * delta_in_ticks + extra_ticks)) {
+                       last_rx - delta_in_ticks,
+                       last_rx + 3 * delta_in_ticks + extra_ticks)) {
 
                        slave->new_link = BOND_LINK_DOWN;
                        commit++;
@@ -2836,8 +2837,8 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
                        trans_start - delta_in_ticks,
                        trans_start + 2 * delta_in_ticks + extra_ticks) ||
                     !time_in_range(jiffies,
-                       slave_last_rx(bond, slave) - delta_in_ticks,
-                       slave_last_rx(bond, slave) + 2 * delta_in_ticks + extra_ticks))) {
+                       last_rx - delta_in_ticks,
+                       last_rx + 2 * delta_in_ticks + extra_ticks))) {
 
                        slave->new_link = BOND_LINK_DOWN;
                        commit++;