From 3725822f7c7134249addcd4549aff086950c8090 Mon Sep 17 00:00:00 2001
From: Paul Jackson <pj@sgi.com>
Date: Wed, 24 Aug 2005 04:15:10 -0700
Subject: [PATCH] [PATCH] cpu_exclusive sched domains build fix
As reported by Paul Mackerras <paulus@samba.org>, 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 <pj@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
kernel/cpuset.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index e0d296c5b3023..d7f4d0c957379 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;
}
--
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