Commit 3725822f authored by Paul Jackson's avatar Paul Jackson Committed by Linus Torvalds
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[PATCH] cpu_exclusive sched domains build fix

As reported by Paul Mackerras <>, the previous patch
"cpu_exclusive sched domains fix" broke the ppc64 build with
CONFIC_CPUSET, yielding error messages:

kernel/cpuset.c: In function 'update_cpu_domains':
kernel/cpuset.c:648: error: invalid lvalue in unary '&'
kernel/cpuset.c:648: error: invalid lvalue in unary '&'

On some arch's, the node_to_cpumask() is a function, returning
a cpumask_t.  But the for_each_cpu_mask() requires an lvalue mask.

The following patch fixes this build failure by making a copy
of the cpumask_t on the stack.
Signed-off-by: default avatarPaul Jackson <>
Signed-off-by: default avatarLinus Torvalds <>
parent 40bb0c3e
......@@ -645,7 +645,9 @@ static void update_cpu_domains(struct cpuset *cur)
int i, j;
for_each_cpu_mask(i, cur->cpus_allowed) {
for_each_cpu_mask(j, node_to_cpumask(cpu_to_node(i))) {
cpumask_t mask = node_to_cpumask(cpu_to_node(i));
for_each_cpu_mask(j, mask) {
if (!cpu_isset(j, cur->cpus_allowed))
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