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Date: Fri, 01 Aug 2008 00:01:46 -0700 (PDT) From: David Miller <davem@...emloft.net> To: jarkao2@...il.com Cc: johannes@...solutions.net, netdev@...eo.de, peterz@...radead.org, Larry.Finger@...inger.net, kaber@...sh.net, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, mingo@...hat.com Subject: Re: Kernel WARNING: at net/core/dev.c:1330 __netif_schedule+0x2c/0x98() From: Jarek Poplawski <jarkao2@...il.com> Date: Fri, 1 Aug 2008 07:01:50 +0000 > On Fri, Aug 01, 2008 at 06:48:10AM +0000, Jarek Poplawski wrote: > > On Thu, Jul 31, 2008 at 05:29:32AM -0700, David Miller wrote: > ... > > > diff --git a/net/core/dev.c b/net/core/dev.c > > > index 63d6bcd..69320a5 100644 > > > --- a/net/core/dev.c > > > +++ b/net/core/dev.c > > > @@ -4200,6 +4200,7 @@ static void netdev_init_queues(struct net_device *dev) > > > { > > > netdev_init_one_queue(dev, &dev->rx_queue, NULL); > > > netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL); > > > + spin_lock_init(&dev->tx_global_lock); > > > > This will probably need some lockdep annotations similar to > > _xmit_lock. > > ...BTW, we probably could also consider some optimization here: the > xmit_lock of the first queue could be treated as special, and only > the owner could do such a freezing. This would save changes of > functionality to non mq devices. On the other hand, it would need > remembering about this special treatment (so, eg. a separate lockdep > initialization than all the others). I think special casing the zero's queue's lock is a bad idea. Having a real top-level synchronizer is a powerful tool and we could use it for other things. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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