netdev - RE: [net-next-2.6 PATCH 8/9] vxge: Acquire correct lock based on interrupt context.

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Message-ID: <78C9135A3D2ECE4B8162EBDCE82CAD7705C16329@nekter>
Date:	Mon, 5 Oct 2009 23:23:01 -0400
From:	"Ramkrishna Vepa" <Ramkrishna.Vepa@...erion.com>
To:	"Eric Dumazet" <eric.dumazet@...il.com>
Cc:	"David Miller" <davem@...emloft.net>,
	"Sreenivasa Honnur" <Sreenivasa.Honnur@...erion.com>,
	<netdev@...r.kernel.org>
Subject: RE: [net-next-2.6 PATCH 8/9] vxge: Acquire correct lock based on interrupt context.

> Ramkrishna Vepa a écrit :
> > [Ram] Right, but why have the additional step of saving and restoring
> > the flags while in the interrupt context?
> >
> 
> It costs about the same thing than testing two times in_interrupt()
> 
> pushf
> pop register
> test iflag,register
> je ...
> 
> 
> In the end, original code is shorter and faster.
[Ram] Got it. We'll remove this patch from the patch set.

Ram
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