cpusets: allow cpusets to be configured/built on non-SMP systems

[safe/jmp/linux-2.6] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 3ff910e..2b93b50 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -517,6 +517,7 @@ static int validate_change(const struct cpuset *cur, const struct cpuset *trial)
        return 0;
 }
 
+#ifdef CONFIG_SMP
 /*
  * Helper routine for generate_sched_domains().
  * Do cpusets a, b have overlapping cpus_allowed masks?
@@ -811,6 +812,18 @@ static void do_rebuild_sched_domains(struct work_struct *unused)
 
        put_online_cpus();
 }
+#else /* !CONFIG_SMP */
+static void do_rebuild_sched_domains(struct work_struct *unused)
+{
+}
+
+static int generate_sched_domains(struct cpumask **domains,
+                       struct sched_domain_attr **attributes)
+{
+       *domains = NULL;
+       return 1;
+}
+#endif /* CONFIG_SMP */
 
 static DECLARE_WORK(rebuild_sched_domains_work, do_rebuild_sched_domains);
 
@@ -1164,8 +1177,10 @@ int current_cpuset_is_being_rebound(void)
 
 static int update_relax_domain_level(struct cpuset *cs, s64 val)
 {
+#ifdef CONFIG_SMP
        if (val < -1 || val >= SD_LV_MAX)
                return -EINVAL;
+#endif
 
        if (val != cs->relax_domain_level) {
                cs->relax_domain_level = val;