[S390] Automatically detect added cpus.

[linux-2.6-omap-h63xx.git] / arch / s390 / kernel / smp.c

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 6bb5c050640ff615da18b869748b63518d9bcc09..0aeb290060d9cb379532568880dc4d408b0ac01c 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -505,7 +505,7 @@ out:
        return rc;
 }
 
-static int smp_rescan_cpus(void)
+static int __smp_rescan_cpus(void)
 {
        cpumask_t avail;
 
@@ -570,7 +570,7 @@ out:
        kfree(info);
        printk(KERN_INFO "CPUs: %d configured, %d standby\n", c_cpus, s_cpus);
        get_online_cpus();
-       smp_rescan_cpus();
+       __smp_rescan_cpus();
        put_online_cpus();
 }
 
@@ -1088,8 +1088,8 @@ out:
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static ssize_t __ref rescan_store(struct sys_device *dev,
-                                 const char *buf, size_t count)
+
+int smp_rescan_cpus(void)
 {
        cpumask_t newcpus;
        int cpu;
@@ -1098,7 +1098,7 @@ static ssize_t __ref rescan_store(struct sys_device *dev,
        get_online_cpus();
        mutex_lock(&smp_cpu_state_mutex);
        newcpus = cpu_present_map;
-       rc = smp_rescan_cpus();
+       rc = __smp_rescan_cpus();
        if (rc)
                goto out;
        cpus_andnot(newcpus, cpu_present_map, newcpus);
@@ -1113,6 +1113,15 @@ out:
        put_online_cpus();
        if (!cpus_empty(newcpus))
                topology_schedule_update();
+       return rc;
+}
+
+static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
+                                 size_t count)
+{
+       int rc;
+
+       rc = smp_rescan_cpus();
        return rc ? rc : count;
 }
 static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store);