From: Samuel Ortiz <samuel@sortiz.org>
Date: Tue, 16 Jan 2007 03:37:25 +0000 (-0800)
Subject: [IrDA]: irda-usb TX path optimization (was Re: IrDA spams logfiles - since 2.6.19)
X-Git-Tag: v2.6.20-rc6~5^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3958fb34ef18529c1e4a3eca44b7aaf94d4f4697;p=pandora-kernel.git

[IrDA]: irda-usb TX path optimization (was Re: IrDA spams logfiles - since 2.6.19)

Since we stop using dev_alloc_skb on the IrDA TX frame, we constantly run
into the case of the skb headroom being 0, and thus we call skb_cow for
every IrDA TX frame.
This patch uses a local buffer and memcpy the skb to it, saving us a
kmalloc for each of those IrDA TX frames.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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