From 3725822f7c7134249addcd4549aff086950c8090 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Wed, 24 Aug 2005 04:15:10 -0700 Subject: [PATCH] [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: Paul Jackson Signed-off-by: Linus Torvalds --- kernel/cpuset.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/cpuset.c b/kernel/cpuset.c index e0d296c5b302..d7f4d0c95737 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -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)) return; } -- 2.20.1