On Fri, Jun 08, 2007 at 03:32:08PM -0700, Christoph Lameter wrote: > On Fri, 8 Jun 2007, Keshavamurthy, Anil S wrote: > > > In the IOMMU case, we need exactly opposite of what mempool provides, > > i.e we always want to look for the element in the pool and if the pool > > has no element then go to OS as a worst case. This resource pool > > library routines do the same. Again, this resource pools > > grows and shrinks automatically to maintain the minimum pool > > elements in the background. I am not sure whether this totally > > opposite functionality of mempools and resource pools can be > > merged. > > What functionality are you missing in the page allocator? It seems that is > does what you want? Humm..I basically want to allocate memory during interrupt context and expect not to fail. I know this is a hard requirement :) I want to be able to reserve certain amount of memory specifically for IOMMU purpose.
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