myricom: remove stats_lock
stats_lock is non useless, lets remove it.
Also, ndo_get_stats64() doesnt have to clear the stats, caller takes
care of this.
Note: folding 32bit fields in 64bit one is problematic when one of 32bit
values wraps : SNMP reader will see a ~2^32 back change in a 64bit
value. A future patch should fix this.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Andrew Gallatin <gallatin@myri.com>
CC: Brice Goglin <brice@myri.com>
Acked-by: Jon Mason <mason@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 04e10f4..3e89a84 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -210,7 +210,6 @@
int big_bytes;
int max_intr_slots;
struct net_device *dev;
- spinlock_t stats_lock;
u8 __iomem *sram;
int sram_size;
unsigned long board_span;
@@ -1837,6 +1836,7 @@
int i;
/* force stats update */
+ memset(&link_stats, 0, sizeof(link_stats));
(void)myri10ge_get_stats(netdev, &link_stats);
for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++)
data[i] = ((u64 *)&link_stats)[i];
@@ -2981,12 +2981,10 @@
static struct rtnl_link_stats64 *myri10ge_get_stats(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
- struct myri10ge_priv *mgp = netdev_priv(dev);
- struct myri10ge_slice_netstats *slice_stats;
+ const struct myri10ge_priv *mgp = netdev_priv(dev);
+ const struct myri10ge_slice_netstats *slice_stats;
int i;
- spin_lock(&mgp->stats_lock);
- memset(stats, 0, sizeof(*stats));
for (i = 0; i < mgp->num_slices; i++) {
slice_stats = &mgp->ss[i].stats;
stats->rx_packets += slice_stats->rx_packets;
@@ -2996,7 +2994,6 @@
stats->rx_dropped += slice_stats->rx_dropped;
stats->tx_dropped += slice_stats->tx_dropped;
}
- spin_unlock(&mgp->stats_lock);
return stats;
}
@@ -3966,7 +3963,6 @@
setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer,
(unsigned long)mgp);
- spin_lock_init(&mgp->stats_lock);
SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops);
INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog);
status = register_netdev(netdev);