netdev - Re: [PATCH net 1/5] ibmvnic: harden interrupt handler

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Message-ID: <20170126102802.4f920418@xeon-e3>
Date:   Thu, 26 Jan 2017 10:28:02 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Thomas Falcon <tlfalcon@...ux.vnet.ibm.com>
Cc:     netdev@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        wvoigt@...ibm.com, nfont@...ux.vnet.ibm.com,
        jallen@...ux.vnet.ibm.com
Subject: Re: [PATCH net 1/5] ibmvnic: harden interrupt handler

On Wed, 25 Jan 2017 15:02:19 -0600
Thomas Falcon <tlfalcon@...ux.vnet.ibm.com> wrote:

>  static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
>  {
>  	struct ibmvnic_adapter *adapter = instance;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&adapter->crq.lock, flags);
> +	vio_disable_interrupts(adapter->vdev);
> +	tasklet_schedule(&adapter->tasklet);
> +	spin_unlock_irqrestore(&adapter->crq.lock, flags);
> +	return IRQ_HANDLED;
> +}
> +

Why not use NAPI? rather than a tasklet