tree 7687dbae04327ed56bec60b21667eea66a9e52b4
parent fef501d49d31f997a3381b6c1efd5bca382b6b6f
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1278455956 -0700
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1280976983 +1000

memblock: NUMA allocate can now use early_pfn_map

We now provide a default (weak) implementation of memblock_nid_range()
which uses the early_pfn_map[] if CONFIG_ARCH_POPULATES_NODE_MAP
is set. Sparc still needs to use its own method due to the way
the pages can be scattered between nodes.

This implementation is inefficient due to our main algorithm and
callback construct wanting to work on an ascending addresses bases
while early_pfn_map[] would rather work with nid's (it's unsorted
at that stage). But it should work and we can look into improving
it subsequently, possibly using arch compile options to chose a
different algorithm alltogether.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>