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Commit 6bdb7fe3 authored by Amerigo Wang's avatar Amerigo Wang Committed by David S. Miller
Browse files

netpoll: re-enable irq in poll_napi() 



napi->poll() needs IRQ enabled, so we have to re-enable IRQ before
calling it.

Cc: David Miller <davem@davemloft.net>
Signed-off-by: default avatarCong Wang <amwang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 689971b4

net/core/netpoll.c

+9 −1
Original line number Diff line number Diff line
@@ -168,17 +168,25 @@ static void poll_napi(struct net_device *dev) 
	struct napi_struct *napi;

	int budget = 16;



	WARN_ON_ONCE(!irqs_disabled());



	list_for_each_entry(napi, &dev->napi_list, dev_list) {

		local_irq_enable();

		if (napi->poll_owner != smp_processor_id() &&

		    spin_trylock(&napi->poll_lock)) {

			rcu_read_lock_bh();

			budget = poll_one_napi(rcu_dereference_bh(dev->npinfo),

					       napi, budget);

			rcu_read_unlock_bh();

			spin_unlock(&napi->poll_lock);



			if (!budget)

			if (!budget) {

				local_irq_disable();

				break;

			}

		}

		local_irq_disable();

	}

}



static void service_arp_queue(struct netpoll_info *npi)