From: Mel Gorman Date: Mon, 7 Oct 2013 10:29:11 +0000 (+0100) Subject: sched/numa: Retry migration of tasks to CPU on a preferred node X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~40^2~57 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b9a7460b6baf6c77fc3d23d927ddfc3f3f05bf3;p=pandora-kernel.git sched/numa: Retry migration of tasks to CPU on a preferred node When a preferred node is selected for a tasks there is an attempt to migrate the task to a CPU there. This may fail in which case the task will only migrate if the active load balancer takes action. This may never happen if the conditions are not right. This patch will check at NUMA hinting fault time if another attempt should be made to migrate the task. It will only make an attempt once every five seconds. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Srikar Dronamraju Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1381141781-10992-34-git-send-email-mgorman@suse.de Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed