diff options
| author | Faisal Latif <faisal.latif@intel.com> | 2010-02-12 19:55:03 +0000 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-02-19 11:38:14 -0800 |
| commit | 6e10d2e407542605b2bdca43dc88c35fa8bd24b2 (patch) | |
| tree | c79261a233ea24d7b3cee6fb011a6b8f5243a8e4 /drivers/infiniband | |
| parent | 676ad585531e965416fd958747894541dabcec96 (diff) | |
| download | kernel_samsung_smdk4412-6e10d2e407542605b2bdca43dc88c35fa8bd24b2.zip kernel_samsung_smdk4412-6e10d2e407542605b2bdca43dc88c35fa8bd24b2.tar.gz kernel_samsung_smdk4412-6e10d2e407542605b2bdca43dc88c35fa8bd24b2.tar.bz2 | |
RDMA/nes: Use atomic counters for CM listener create and destroy
After running long iterative MPI tests, sometimes ethtool reports a
"CM Destroy Listener" count more than the "CM Create Listener" count.
This inconsistency is fixed by making counter variables atomic.
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/nes/nes.h | 4 | ||||
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_cm.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_nic.c | 4 |
3 files changed, 8 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h index 9884056..cffdac4 100644 --- a/drivers/infiniband/hw/nes/nes.h +++ b/drivers/infiniband/hw/nes/nes.h @@ -193,8 +193,8 @@ extern u32 cm_packets_created; extern u32 cm_packets_received; extern u32 cm_packets_dropped; extern u32 cm_packets_retrans; -extern u32 cm_listens_created; -extern u32 cm_listens_destroyed; +extern atomic_t cm_listens_created; +extern atomic_t cm_listens_destroyed; extern u32 cm_backlog_drops; extern atomic_t cm_loopbacks; extern atomic_t cm_nodes_created; diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index 39468c2..debd92c 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -67,8 +67,8 @@ u32 cm_packets_dropped; u32 cm_packets_retrans; u32 cm_packets_created; u32 cm_packets_received; -u32 cm_listens_created; -u32 cm_listens_destroyed; +atomic_t cm_listens_created; +atomic_t cm_listens_destroyed; u32 cm_backlog_drops; atomic_t cm_loopbacks; atomic_t cm_nodes_created; @@ -1042,7 +1042,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, kfree(listener); listener = NULL; ret = 0; - cm_listens_destroyed++; + atomic_inc(&cm_listens_destroyed); } else { spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); } @@ -3172,7 +3172,7 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog) g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); return err; } - cm_listens_created++; + atomic_inc(&cm_listens_created); } cm_id->add_ref(cm_id); diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c index ab11027..3d550dc 100644 --- a/drivers/infiniband/hw/nes/nes_nic.c +++ b/drivers/infiniband/hw/nes/nes_nic.c @@ -1230,8 +1230,8 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev, target_stat_values[++index] = cm_packets_received; target_stat_values[++index] = cm_packets_dropped; target_stat_values[++index] = cm_packets_retrans; - target_stat_values[++index] = cm_listens_created; - target_stat_values[++index] = cm_listens_destroyed; + target_stat_values[++index] = atomic_read(&cm_listens_created); + target_stat_values[++index] = atomic_read(&cm_listens_destroyed); target_stat_values[++index] = cm_backlog_drops; target_stat_values[++index] = atomic_read(&cm_loopbacks); target_stat_values[++index] = atomic_read(&cm_nodes_created); |