From: Dan Williams <dan.j.williams@intel.com>
Date: Tue, 8 Sep 2009 19:02:01 +0000 (-0700)
Subject: ioat2,3: dynamically resize descriptor ring
X-Git-Tag: v2.6.32-rc1~60^2^2~35
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a309218acee8606f7e235da20cc826eb06d9b0f6;p=pandora-kernel.git

ioat2,3: dynamically resize descriptor ring

Increment the allocation order of the descriptor ring every time we run
out of descriptors up to a maximum of allocation order specified by the
module parameter 'ioat_max_alloc_order'.  After each idle period
decrement the allocation order to a minimum order of
'ioat_ring_alloc_order' (i.e. the default ring size, tunable as a module
parameter).

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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