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Date: Wed, 23 Jul 2008 00:59:21 -0700 (PDT) From: David Miller <davem@...emloft.net> To: jarkao2@...il.com Cc: 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 Subject: Re: Kernel WARNING: at net/core/dev.c:1330 __netif_schedule+0x2c/0x98() From: Jarek Poplawski <jarkao2@...il.com> Date: Wed, 23 Jul 2008 06:20:36 +0000 > PS: if there is nothing new in lockdep the classical method would > be to change this static array: > > static struct lock_class_key > netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)]; > > to > > static struct lock_class_key > netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)][MAX_NUM_TX_QUEUES]; > > and set lockdep classes per queue as well. (If we are sure we don't > need lockdep subclasses anywhere this could be optimized by using > one lock_class_key per 8 queues and spin_lock_nested()). Unfortunately MAX_NUM_TX_QUEUES is USHORT_MAX, so this isn't really a feasible approach. spin_lock_nested() isn't all that viable either, as the subclass limit is something like 8. -- 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
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