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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-06-19 20:07:46 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-06-20 13:02:36 -0700 |
| commit | 306ff6eb8e9c18bcafb8ca5be4be3c78dfe45475 (patch) | |
| tree | 02fdfd2682061ca9078962cf41a32d3f40c95043 /drivers/net/myri10ge/myri10ge.c | |
| parent | eac56465b88cc9ad3b964a9f0a02be3d3a136ddf (diff) | |
| download | lwn-306ff6eb8e9c18bcafb8ca5be4be3c78dfe45475.tar.gz lwn-306ff6eb8e9c18bcafb8ca5be4be3c78dfe45475.zip | |
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>
Diffstat (limited to 'drivers/net/myri10ge/myri10ge.c')
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 04e10f4d679d..3e89a842fc5e 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -210,7 +210,6 @@ struct myri10ge_priv { 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 @@ myri10ge_get_ethtool_stats(struct net_device *netdev, 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 @@ drop: 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 @@ static struct rtnl_link_stats64 *myri10ge_get_stats(struct net_device *dev, 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 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 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); |