[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sun, 09 Sep 2007 15:50:38 -0700
From: "Kok, Auke" <auke-jan.h.kok@...el.com>
To: Jiri Slaby <jirislaby@...il.com>
Cc: no To-header on input
<"unlisted-recipients:; "@doppio.foo-projects.org>,
Andrew Morton <akpm@...ux-foundation.org>,
netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net,
Auke Kok <auke-jan.h.kok@...el.com>,
"David S. Miller" <davem@...emloft.net>
Subject: Re: 2.6.23-rc4-mm1: e1000e napi lockup
Jiri Slaby wrote:
> On 09/07/2007 09:19 AM, Jiri Slaby wrote:
>> Hi,
>>
>> I found a regression in 2.6.23-rc4-mm1 (since -rc3-mm1) in e1000e driver.
>> napi_disable(&adapter->napi) in e1000_probe freezes the kernel on boot.
>
> Ok, after these changes:
> diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
> index c1c64e2..f8ec537 100644
> --- a/drivers/net/e1000e/netdev.c
> +++ b/drivers/net/e1000e/netdev.c
> @@ -1693,10 +1693,7 @@ quit_polling:
> if (adapter->itr_setting & 3)
> e1000_set_itr(adapter);
> netif_rx_complete(poll_dev, napi);
> - if (test_bit(__E1000_DOWN, &adapter->state))
> - atomic_dec(&adapter->irq_sem);
> - else
> - e1000_irq_enable(adapter);
> + e1000_irq_enable(adapter);
> return 0;
> }
>
> @@ -4257,7 +4254,6 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
> /* tell the stack to leave us alone until e1000_open() is called */
> netif_carrier_off(netdev);
> netif_stop_queue(netdev);
> - napi_disable(&adapter->napi);
>
> strcpy(netdev->name, "eth%d");
> err = register_netdev(netdev);
>
>
> I still have problems with the driver. When I do `ip link set eth0 up', ksoftirq
> runs with 100 % cpu time, so I think you endlessly re-schedule some timer (or
> the new napi layer?)
something changed in the logic and e1000e apparently does something wrong. I'll
look into it on monday and resubmit a fixup patch (see robert olsson's mail as
well discussing this issue)
Auke
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists