netdev - Re: [net-next-2.6 PATCH 3/4] ixgbe: remove rx_hdr_split debug counter for non-debug configurations

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Message-Id: <20090528.170454.04735753.davem@davemloft.net>
Date:	Thu, 28 May 2009 17:04:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	alexander.h.duyck@...el.com
Cc:	bhutchings@...arflare.com, jeffrey.t.kirsher@...el.com,
	netdev@...r.kernel.org
Subject: Re: [net-next-2.6 PATCH 3/4] ixgbe: remove rx_hdr_split debug
 counter for non-debug configurations

From: "Duyck, Alexander H" <alexander.h.duyck@...el.com>
Date: Thu, 28 May 2009 17:01:17 -0700

> The counter didn't really have much use other than in our early
> validation work to make certain the silicon was working as
> documented.  If it stays it isn't too big a concern I just figured
> it might be nice to remove it since igb is a multiqueue driver and
> having a global counter can cause some cache thrash on multicore
> systems.

If it really is just a silicon validation thing, then given the
multiqueue concerns it's probably best to just remove it
unconditionaly.
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