Replace GFP_ATOMIC allocation for sched_group_nodes with GFP_KERNEL based
allocation.

Signed-off-by: Srivatsa Vaddagiri <vatsa@in.ibm.com
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>