Jiri Slaby wrote:
quoted text > On 12/23/-28158 08:59 PM, Auke Kok wrote:
>> This incorporates the new napi_struct changes into e1000e. Included
>> bugfix for ifdown hang from Krishna Kumar for e1000.
>>
>> Disabling polling is no longer needed at init time, so remove
>> napi_disable() call from _probe().
>>
>> This also fixes an endless polling loop where the driver signalled
>> "polling done" improperly back to the stack.
>>
>> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
>> ---
>>
>> drivers/net/e1000e/e1000.h | 2 ++
>> drivers/net/e1000e/netdev.c | 40 ++++++++++++++++------------------------
>> 2 files changed, 18 insertions(+), 24 deletions(-)
>>
>> diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
>> index c57e35a..d2499bb 100644
>> --- a/drivers/net/e1000e/e1000.h
>> +++ b/drivers/net/e1000e/e1000.h
>> @@ -187,6 +187,8 @@ struct e1000_adapter {
>> struct e1000_ring *tx_ring /* One per active queue */
>> ____cacheline_aligned_in_smp;
>>
>> + struct napi_struct napi;
>> +
>> unsigned long tx_queue_len;
>> unsigned int restart_queue;
>> u32 txd_cmd;
>> diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
>> index 372da46..eeb40cc 100644
>> --- a/drivers/net/e1000e/netdev.c
>> +++ b/drivers/net/e1000e/netdev.c
>> @@ -1149,12 +1149,12 @@ static irqreturn_t e1000_intr_msi(int irq, void *data)
>> mod_timer(&adapter->watchdog_timer, jiffies + 1);
>> }
>>
>> - if (netif_rx_schedule_prep(netdev)) {
>> + if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
>> adapter->total_tx_bytes = 0;
>> adapter->total_tx_packets = 0;
>> adapter->total_rx_bytes = 0;
>> adapter->total_rx_packets = 0;
>> - __netif_rx_schedule(netdev);
>> + __netif_rx_schedule(netdev, &adapter->napi);
>> } else {
>> atomic_dec(&adapter->irq_sem);
>> }
>> @@ -1212,12 +1212,12 @@ static irqreturn_t e1000_intr(int irq, void *data)
>> mod_timer(&adapter->watchdog_timer, jiffies + 1);
>> }
>>
>> - if (netif_rx_schedule_prep(netdev)) {
>> + if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
>> adapter->total_tx_bytes = 0;
>> adapter->total_tx_packets = 0;
>> adapter->total_rx_bytes = 0;
>> adapter->total_rx_packets = 0;
>> - __netif_rx_schedule(netdev);
>> + __netif_rx_schedule(netdev, &adapter->napi);
>> } else {
>> atomic_dec(&adapter->irq_sem);
>> }
>> @@ -1662,10 +1662,10 @@ set_itr_now:
>> * e1000_clean - NAPI Rx polling callback
>> * @adapter: board private structure
>> **/
>> -static int e1000_clean(struct net_device *poll_dev, int *budget)
>> +static int e1000_clean(struct napi_struct *napi, int budget)
>> {
>> - struct e1000_adapter *adapter;
>> - int work_to_do = min(*budget, poll_dev->quota);
>> + struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
>> + struct net_device *poll_dev = adapter->netdev;
>> int tx_cleaned = 0, work_done = 0;
>>
>> /* Must NOT use netdev_priv macro here. */
>> @@ -1684,25 +1684,19 @@ static int e1000_clean(struct net_device *poll_dev, int *budget)
>> spin_unlock(&adapter->tx_queue_lock);
>> }
>>
>> - adapter->clean_rx(adapter, &work_done, work_to_do);
>> - *budget -= work_done;
>> - poll_dev->quota -= work_done;
>> + adapter->clean_rx(adapter, &work_done, budget);
>>
>> /* If no Tx and not enough Rx work done, exit the polling mode */
>> - if ((!tx_cleaned && (work_done == 0)) ||
>> + if ((!tx_cleaned && (work_done < budget)) ||
>
> Hi,
>
> sorry to say that, but this change since last your patch changes nothing on my
> machine (ksoftirq spinning at 100 % of CPU usage), I have some traces for you if
> it helps:
davem pulled all the drivers and fixups into net-2.6.24 including e1000e (and
tested it yesterday)... Perhaps you can give that tree a try?
I have no lockups here as well anymore, so I'm wondering if you accidentally used
V3 of the patch.
Can you give today's net-2.6.24 a try?
Auke
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
majordomo@vger.kernel.org
More majordomo info at
http://vger.kernel.org/majordomo-info.html
