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authorLaurence Evans <levans@solarflare.com>2014-02-12 22:58:24 +0400
committerDavid S. Miller <davem@davemloft.net>2014-02-13 02:53:33 +0400
commitf9fd7ec786e41a3730916bbc1bc1d9d347f07ec5 (patch)
tree42eb9c8071dbe02cb7600651842e7466c6b5185a /drivers/net/ethernet/sfc/ptp.c
parenta146b591977ebe99d84d9d8f556204be7def86fc (diff)
downloadlinux-f9fd7ec786e41a3730916bbc1bc1d9d347f07ec5.tar.xz
sfc: Removed adhoc scheme to rate limit PTP event queue overflow message
Use conventional net_ratelimit() instead. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Shradha Shah <sshah@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/ptp.c')
-rw-r--r--drivers/net/ethernet/sfc/ptp.c22
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index eb75fbd11a01..52be63dc68cf 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -223,7 +223,6 @@ struct efx_ptp_timeset {
* @evt_list: List of MC receive events awaiting packets
* @evt_free_list: List of free events
* @evt_lock: Lock for manipulating evt_list and evt_free_list
- * @evt_overflow: Boolean indicating that event list has overflowed
* @rx_evts: Instantiated events (on evt_list and evt_free_list)
* @workwq: Work queue for processing pending PTP operations
* @work: Work task
@@ -275,7 +274,6 @@ struct efx_ptp_data {
struct list_head evt_list;
struct list_head evt_free_list;
spinlock_t evt_lock;
- bool evt_overflow;
struct efx_ptp_event_rx rx_evts[MAX_RECEIVE_EVENTS];
struct workqueue_struct *workwq;
struct work_struct work;
@@ -941,11 +939,6 @@ static void efx_ptp_drop_time_expired_events(struct efx_nic *efx)
}
}
}
- /* If the event overflow flag is set and the event list is now empty
- * clear the flag to re-enable the overflow warning message.
- */
- if (ptp->evt_overflow && list_empty(&ptp->evt_list))
- ptp->evt_overflow = false;
spin_unlock_bh(&ptp->evt_lock);
}
@@ -989,11 +982,6 @@ static enum ptp_packet_state efx_ptp_match_rx(struct efx_nic *efx,
break;
}
}
- /* If the event overflow flag is set and the event list is now empty
- * clear the flag to re-enable the overflow warning message.
- */
- if (ptp->evt_overflow && list_empty(&ptp->evt_list))
- ptp->evt_overflow = false;
spin_unlock_bh(&ptp->evt_lock);
return rc;
@@ -1147,7 +1135,6 @@ static int efx_ptp_stop(struct efx_nic *efx)
list_for_each_safe(cursor, next, &efx->ptp_data->evt_list) {
list_move(cursor, &efx->ptp_data->evt_free_list);
}
- ptp->evt_overflow = false;
spin_unlock_bh(&efx->ptp_data->evt_lock);
return rc;
@@ -1253,7 +1240,6 @@ int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel)
spin_lock_init(&ptp->evt_lock);
for (pos = 0; pos < MAX_RECEIVE_EVENTS; pos++)
list_add(&ptp->rx_evts[pos].link, &ptp->evt_free_list);
- ptp->evt_overflow = false;
/* Get the NIC PTP attributes and set up time conversions */
rc = efx_ptp_get_attributes(efx);
@@ -1635,13 +1621,9 @@ static void ptp_event_rx(struct efx_nic *efx, struct efx_ptp_data *ptp)
list_add_tail(&evt->link, &ptp->evt_list);
queue_work(ptp->workwq, &ptp->work);
- } else if (!ptp->evt_overflow) {
- /* Log a warning message and set the event overflow flag.
- * The message won't be logged again until the event queue
- * becomes empty.
- */
+ } else if (net_ratelimit()) {
+ /* Log a rate-limited warning message. */
netif_err(efx, rx_err, efx->net_dev, "PTP event queue overflow\n");
- ptp->evt_overflow = true;
}
spin_unlock_bh(&ptp->evt_lock);
}