From: Stephen Hemminger <shemminger@osdl.org>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] netpoll: use sk_buff_head for txq
Date: Tue, 24 Oct 2006 07:51:30 -0700 [thread overview]
Message-ID: <20061024075130.6e4cf8d2@dads-laptop> (raw)
In-Reply-To: <20061023.230350.05157566.davem@davemloft.net>
On Mon, 23 Oct 2006 23:03:50 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:
> From: Stephen Hemminger <shemminger@osdl.org>
> Date: Mon, 23 Oct 2006 12:02:53 -0700
>
> > + spin_lock_irqsave(&netpoll_txq.lock, flags);
> > + for (skb = (struct sk_buff *)netpoll_txq.next;
> > + skb != (struct sk_buff *)&netpoll_txq; skb = next) {
> > + next = skb->next;
> > + if (skb->dev == dev) {
> > + skb_unlink(skb, &netpoll_txq);
> > + kfree_skb(skb);
> > + }
> > }
> > + spin_unlock_irqrestore(&netpoll_txq.lock, flags);
>
> IRQ's are disabled, I think we can't call kfree_skb() in such a
> context.
It is save since the skb's only come from this code (no destructors).
>
> That's why zap_completion_queue() has all of these funny
> skb->destructor checks and such, all of this stuff potentially runs in
> IRQ context.
It should use __kfree_skb in the purge routine (like other places).
next prev parent reply other threads:[~2006-10-24 14:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-19 17:15 [PATCH 0/3] netpoll/netconsole fixes Stephen Hemminger
2006-10-19 17:15 ` [PATCH 1/3] netpoll: initialize skb for UDP Stephen Hemminger
2006-10-20 6:58 ` David Miller
2006-10-19 17:15 ` [PATCH 2/3] netpoll: rework skb transmit queue Stephen Hemminger
2006-10-20 7:15 ` David Miller
2006-10-20 15:18 ` Stephen Hemminger
2006-10-20 19:24 ` David Miller
2006-10-20 19:25 ` Stephen Hemminger
2006-10-20 19:52 ` David Miller
2006-10-20 20:14 ` Stephen Hemminger
2006-10-20 20:25 ` Stephen Hemminger
2006-10-21 5:00 ` Dave Jones
2006-10-21 6:38 ` David Miller
2006-10-20 15:40 ` Stephen Hemminger
2006-10-20 19:27 ` David Miller
2006-10-20 19:31 ` Stephen Hemminger
2006-10-20 20:42 ` David Miller
2006-10-20 20:48 ` Stephen Hemminger
2006-10-20 21:01 ` Andi Kleen
2006-10-20 21:08 ` David Miller
2006-10-20 21:16 ` Andi Kleen
2006-10-20 21:41 ` Stephen Hemminger
2006-10-20 21:01 ` David Miller
2006-10-20 22:30 ` [PATCH 1/3] netpoll: use sk_buff_head for txq Stephen Hemminger
2006-10-23 3:42 ` David Miller
[not found] ` <20061023115337.1f636ffb@dxpl.pdx.osdl.net>
2006-10-23 19:02 ` [PATCH 4/5] netpoll: move drop hook inline Stephen Hemminger
2006-10-23 19:03 ` [PATCH 3/5] netpoll: cleanup transmit retry logic Stephen Hemminger
2006-10-23 19:02 ` [PATCH 1/5] netpoll: use sk_buff_head for txq Stephen Hemminger
2006-10-23 19:04 ` [PATCH 5/5] netpoll: interface cleanup Stephen Hemminger
2006-10-24 6:03 ` [PATCH 1/5] netpoll: use sk_buff_head for txq David Miller
2006-10-24 14:51 ` Stephen Hemminger [this message]
[not found] ` <20061023115111.0d69846e@dxpl.pdx.osdl.net>
2006-10-23 19:02 ` [PATCH 2/5] netpoll: cleanup queued transmit Stephen Hemminger
2006-10-20 22:32 ` [PATCH 2/3] netpoll: use device xmit directly Stephen Hemminger
2006-10-20 22:35 ` [PATCH 3/3] netpoll: retry logic cleanup Stephen Hemminger
2006-10-19 17:15 ` [PATCH 3/3] netpoll: use skb_buff_head for skb cache Stephen Hemminger
2006-10-20 6:57 ` [PATCH 0/3] netpoll/netconsole fixes Andrew Morton
2006-10-20 7:16 ` David Miller
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