The delta in clock_task is a more fair attribution of how much time a tg has been contributing load to the current cpu. While not really important it also means we're more in sync (by magnitude) with respect to periodic updates (since __update_curr deltas are clock_task based). Signed-off-by: Paul Turner --- kernel/sched_fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: tip3/kernel/sched_fair.c =================================================================== --- tip3.orig/kernel/sched_fair.c +++ tip3/kernel/sched_fair.c @@ -724,7 +724,7 @@ static void update_cfs_load(struct cfs_r if (cfs_rq->tg == root_task_group) return; - now = rq_of(cfs_rq)->clock; + now = rq_of(cfs_rq)->clock_task; delta = now - cfs_rq->load_stamp; /* truncate load history at 4 idle periods */