* Re: more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 client
@ 2001-11-21 19:09 Manfred Spraul
2001-11-21 19:23 ` more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 kuznet
0 siblings, 1 reply; 3+ messages in thread
From: Manfred Spraul @ 2001-11-21 19:09 UTC (permalink / raw)
To: Trond Myklebust; +Cc: kuznet, David S. Miller, linux-kernel
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> IOW:
> Either we must demand that CPU 2 uses irq-safe spinlocks in order to
> protect against sk->write_space(), or we must demand that CPU 1 should drop
> 'lock1' before being allowed to call dev_kfree_skb_any().
Or dev_kfree_skb_any() should consider disabled local interrupts as
'in_irq()' and call dev_kfree_skb_irq() in this case, or the driver
could call dev_kfree_irq() if it really wants to free while holding an
irq spinlock.
But that's a known problem:
http://groups.google.com/groups?q=dev_kfree_skb_any&hl=en&rnum=1&selm=linux.net.20010905.184245.94554736.davem%40redhat.com
--
Manfred
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5
2001-11-21 19:09 more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 client Manfred Spraul
@ 2001-11-21 19:23 ` kuznet
2001-11-21 20:33 ` Manfred Spraul
0 siblings, 1 reply; 3+ messages in thread
From: kuznet @ 2001-11-21 19:23 UTC (permalink / raw)
To: Manfred Spraul; +Cc: trond.myklebust, davem, linux-kernel
Hello!
> should consider disabled local interrupts as
> 'in_irq()'
How to do this?
Alexey
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5
2001-11-21 19:23 ` more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 kuznet
@ 2001-11-21 20:33 ` Manfred Spraul
0 siblings, 0 replies; 3+ messages in thread
From: Manfred Spraul @ 2001-11-21 20:33 UTC (permalink / raw)
To: kuznet; +Cc: trond.myklebust, davem, linux-kernel
kuznet@ms2.inr.ac.ru wrote:
>
> Hello!
>
> > should consider disabled local interrupts as
> > 'in_irq()'
>
> How to do this?
>
Arch specific, like __global_cli() in arch/i386/kernel/irq.c.
What about a rate-limited warning if dev_kfree_skb_any is called with
disabled interrupts?
--
Manfred
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2001-11-21 20:34 UTC | newest]
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2001-11-21 19:09 more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 client Manfred Spraul
2001-11-21 19:23 ` more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 kuznet
2001-11-21 20:33 ` Manfred Spraul
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