netdev - RE: [PATCH 2/6] drivers: net: ethernet: davinci_cpdma: add clear api for statistics interrupt

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Date:	Mon, 22 Oct 2012 10:42:26 +0000
From:	"N, Mugunthan V" <mugunthanvnm@...com>
To:	Richard Cochran <richardcochran@...il.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>
Subject: RE: [PATCH 2/6] drivers: net: ethernet: davinci_cpdma: add clear
 api for statistics interrupt

> -----Original Message-----
> From: Richard Cochran [mailto:richardcochran@...il.com]
> Sent: Thursday, October 18, 2012 8:18 AM
> To: N, Mugunthan V
> Cc: netdev@...r.kernel.org; davem@...emloft.net
> Subject: Re: [PATCH 2/6] drivers: net: ethernet: davinci_cpdma: add
> clear api for statistics interrupt
> 
> On Wed, Oct 17, 2012 at 04:15:14AM +0530, Mugunthan V N wrote:
> > Adding api to clear statistics interrupt which is generated by
> > CPTS event pend, stat pend, mdio interrupts
> 
> As I said, we don't need or want the interrupt for the CPTS. If you
> want to add this for the statistics function, go right ahead, but
> please make a separate patch or series for that.
> 

What happens when Hardware timestamps are used? It will be good to
notify the application immediately using the interrupts instead of
using workqueue which can delay the event in hardware for max about
HZ*8.

Regards
Mugunthan V N
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