tree abf2cc9830b6a5a52a165e6a736e85cd5d7b36c0
parent 09c8a5b85e5f1e74a19bdd7c85547429d51df1cd
author Dan Williams <dan.j.williams@intel.com> 1252436521 -0700
committer Dan Williams <dan.j.williams@intel.com> 1252456734 -0700

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>