commit 6563297ceafab6bbcc931b52e2a9e660fbb21fb2
author Tejun Heo <tj@kernel.org> Fri Aug 14 15:00:52 2009 +0900
committer Tejun Heo <tj@kernel.org> Fri Aug 14 15:00:52 2009 +0900
tree bcd5593a9b3088f609adc26185b179ff22b45535
parent ca23e405e06d5fffb005df004c72781f76062f51

percpu: use group information to allocate vmap areas sparsely

ai->groups[] contains which units need to be put consecutively and at
what offset from the chunk base address.  Compile this information
into pcpu_group_offsets[] and pcpu_group_sizes[] in
pcpu_setup_first_chunk() and use them to allocate sparse vm areas
using pcpu_get_vm_areas().

This will be used to allow directly using sparse NUMA memories as
percpu areas.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Nick Piggin <npiggin@suse.de>