commit c4acb2c0669c5c5c9b28e9d02a34b5c67edf7092
author Gregory Haskins <ghaskins@novell.com> Fri Jun 27 14:29:55 2008 -0600
committer Ingo Molnar <mingo@elte.hu> Fri Jul 04 12:50:21 2008 +0200
tree 58a8c98678a204023301e9edfd5e462a65d13851
parent 30432094a7f506ad24997a3ba6aed913ab61c01d

sched: terminate newidle balancing once at least one task has moved over

Inspired by Peter Zijlstra.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Cc: npiggin@suse.de
Cc: rostedt@goodmis.org
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index 677c80b..d99aeab 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -3013,6 +3013,10 @@
 				max_load_move - total_load_moved,
 				sd, idle, all_pinned, &this_best_prio);
 		class = class->next;
+
+		if (idle == CPU_NEWLY_IDLE && this_rq->nr_running)
+			break;
+
 	} while (class && max_load_move > total_load_moved);
 
 	return total_load_moved > 0;