Merge HEAD from ../from-linus

1 files changed, 19 insertions, 0 deletions

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 21a4e3b2cbda..d7f4d0c95737 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -636,6 +636,25 @@ static void update_cpu_domains(struct cpuset *cur)
 		return;
 
 	/*
+	 * Hack to avoid 2.6.13 partial node dynamic sched domain bug.
+	 * Require the 'cpu_exclusive' cpuset to include all (or none)
+	 * of the CPUs on each node, or return w/o changing sched domains.
+	 * Remove this hack when dynamic sched domains fixed.
+	 */
+	{
+		int i, j;
+
+		for_each_cpu_mask(i, cur->cpus_allowed) {
+			cpumask_t mask = node_to_cpumask(cpu_to_node(i));
+
+			for_each_cpu_mask(j, mask) {
+				if (!cpu_isset(j, cur->cpus_allowed))
+					return;
+			}
+		}
+	}
+
+	/*
 	 * Get all cpus from parent's cpus_allowed not part of exclusive
 	 * children
 	 */