Commits
Rik van Riel committed e63da03639c
sched/numa: Allow task switch if load imbalance improves Currently the NUMA balancing code only allows moving tasks between NUMA nodes when the load on both nodes is in balance. This breaks down when the load was imbalanced to begin with. Allow tasks to be moved between NUMA nodes if the imbalance is small, or if the new imbalance is be smaller than the original one. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: mgorman@suse.de Cc: chegu_vinod@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/r/20140514132221.274b3463@annuminas.surriel.com