[PATCH v2 6/7] x86: move cpu_{up,down}_helper()

[Jan Beulich <jbeulich@suse.com>]

This is in preparation of making the building of sysctl.c conditional.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/smp.c
+++ b/xen/arch/x86/smp.c
@@ -22,6 +22,7 @@
 #include <asm/hardirq.h>
 #include <asm/hpet.h>
 #include <asm/hvm/support.h>
+#include <asm/setup.h>
 #include <irq_vectors.h>
 #include <mach_apic.h>
 
@@ -396,3 +397,36 @@ void call_function_interrupt(struct cpu_
     perfc_incr(ipis);
     smp_call_function_interrupt();
 }
+
+long cpu_up_helper(void *data)
+{
+    unsigned int cpu = (unsigned long)data;
+    int ret = cpu_up(cpu);
+
+    /* Have one more go on EBUSY. */
+    if ( ret == -EBUSY )
+        ret = cpu_up(cpu);
+
+    if ( !ret && !opt_smt &&
+         cpu_data[cpu].compute_unit_id == INVALID_CUID &&
+         cpumask_weight(per_cpu(cpu_sibling_mask, cpu)) > 1 )
+    {
+        ret = cpu_down_helper(data);
+        if ( ret )
+            printk("Could not re-offline CPU%u (%d)\n", cpu, ret);
+        else
+            ret = -EPERM;
+    }
+
+    return ret;
+}
+
+long cpu_down_helper(void *data)
+{
+    int cpu = (unsigned long)data;
+    int ret = cpu_down(cpu);
+    /* Have one more go on EBUSY. */
+    if ( ret == -EBUSY )
+        ret = cpu_down(cpu);
+    return ret;
+}
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -79,39 +79,6 @@ static void l3_cache_get(void *arg)
         l3_info->size = info.size / 1024; /* in KB unit */
 }
 
-long cpu_up_helper(void *data)
-{
-    unsigned int cpu = (unsigned long)data;
-    int ret = cpu_up(cpu);
-
-    /* Have one more go on EBUSY. */
-    if ( ret == -EBUSY )
-        ret = cpu_up(cpu);
-
-    if ( !ret && !opt_smt &&
-         cpu_data[cpu].compute_unit_id == INVALID_CUID &&
-         cpumask_weight(per_cpu(cpu_sibling_mask, cpu)) > 1 )
-    {
-        ret = cpu_down_helper(data);
-        if ( ret )
-            printk("Could not re-offline CPU%u (%d)\n", cpu, ret);
-        else
-            ret = -EPERM;
-    }
-
-    return ret;
-}
-
-long cpu_down_helper(void *data)
-{
-    int cpu = (unsigned long)data;
-    int ret = cpu_down(cpu);
-    /* Have one more go on EBUSY. */
-    if ( ret == -EBUSY )
-        ret = cpu_down(cpu);
-    return ret;
-}
-
 static long smt_up_down_helper(void *data)
 {
     bool up = (bool)data;