linux-kernel - Re: [PATCH resend] drop_monitor: fix trace_napi_poll

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Message-ID: <20090831154242.GB2105@hmsreliant.think-freely.org>
Date:	Mon, 31 Aug 2009 11:42:42 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	David Miller <davem@...emloft.net>,
	Wei Yongjun <yjwei@...fujitsu.com>,
	Netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH resend] drop_monitor: fix trace_napi_poll_hit()

On Mon, Aug 31, 2009 at 03:33:50PM +0200, Eric Dumazet wrote:
> Neil Horman a écrit :
> > I still see a large number of drivers that update dev->last_rx, although its
> > not all as I look through the list, so something definately seems amiss.
> 
> Some drivers still update dev->last_rx for their own needs, not a core
> network concern.
> 
> But a cleanup is certainly possible on few other drivers, about a dozen
> if I count correctly.
> 
> > 
> > If its not going to be consistently updated, why are still carrying that field
> > in dev?  Are we just waiting on someone to do the janitorial work to remove it?
> > If so, I can, and I'll fix up the drop monitor in the process, to use a private
> > timestamp.
> 
> We have to keep dev->last_rx for bonding use, so please use a private
> timestamp for drop monitor.
> 

Copy that, I'll submit a drop monitor patch for this sometime this week.  Thanks
for the heads up!
Neil

> Thanks
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