netdev - Re: [PATCH 2/3] r8169: Use dev_kfree

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Message-ID: <20150501093420.GA11669@electric-eye.fr.zoreil.com>
Date:	Fri, 1 May 2015 11:34:20 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Alexander Duyck <alexander.h.duyck@...hat.com>
Cc:	netdev@...r.kernel.org, nic_swsd@...ltek.com,
	Dept-HSGLinuxNICDev@...gic.com, sony.chacko@...gic.com,
	intel-wired-lan@...ts.osuosl.org, jeffrey.t.kirsher@...el.com,
	davem@...emloft.net
Subject: Re: [PATCH 2/3] r8169: Use dev_kfree_skb in Tx cleanup path

Alexander Duyck <alexander.h.duyck@...hat.com> :
> This change replaces the use of either dev_kfree_skb_any or
> dev_consume_skb_any in the Tx cleanup path of this driver with
> dev_kfree_skb.  There isn't any need for the "_any" version of these
> functions since the NAPI cleanup context is not a hard irq context.

netconsole ?

__dev_kfree_skb_any contains a big "if (... || irqs_disabled())" test
and the NAPI poll handler is called with irq disabled from
netpoll_send_skb_on_dev.

-- 
Ueimor
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