net: disable preemption before call smp_processor_id()

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Although netif_rx() isn't expected to be called in process context with
preemption enabled, it'd better handle this case. And this is why get_cpu()
is used in the non-RPS #ifdef branch. If tree RCU is selected,
rcu_read_lock() won't disable preemption, so preempt_disable() should be
called explictly.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Changli Gao 2010-08-07 20:35:43 -07:00 • committed by David S. Miller

parent ba78e2ddca

commit cece1945bf

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net/core/dev.c

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