cpus.c: Make all_cpu_threads_idle() static

Commit 946fb27c1 moved all the uses of all_cpu_threads_idle()
into cpus.c. This means we can mark the function 'static'
(again), if we shuffle it a bit earlier in the source file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

cpus.c

@@ -61,6 +61,32 @@
 
 static CPUArchState *next_cpu;
 
+static bool cpu_thread_is_idle(CPUArchState *env)
+{
+    if (env->stop || env->queued_work_first) {
+        return false;
+    }
+    if (env->stopped || !runstate_is_running()) {
+        return true;
+    }
+    if (!env->halted || qemu_cpu_has_work(env) || kvm_irqchip_in_kernel()) {
+        return false;
+    }
+    return true;
+}
+
+static bool all_cpu_threads_idle(void)
+{
+    CPUArchState *env;
+
+    for (env = first_cpu; env != NULL; env = env->next_cpu) {
+        if (!cpu_thread_is_idle(env)) {
+            return false;
+        }
+    }
+    return true;
+}
+
 /***********************************************************/
 /* guest cycle counter */
 
@@ -433,32 +459,6 @@ static int cpu_can_run(CPUArchState *env)
     return 1;
 }
 
-static bool cpu_thread_is_idle(CPUArchState *env)
-{
-    if (env->stop || env->queued_work_first) {
-        return false;
-    }
-    if (env->stopped || !runstate_is_running()) {
-        return true;
-    }
-    if (!env->halted || qemu_cpu_has_work(env) || kvm_irqchip_in_kernel()) {
-        return false;
-    }
-    return true;
-}
-
-bool all_cpu_threads_idle(void)
-{
-    CPUArchState *env;
-
-    for (env = first_cpu; env != NULL; env = env->next_cpu) {
-        if (!cpu_thread_is_idle(env)) {
-            return false;
-        }
-    }
-    return true;
-}
-
 static void cpu_handle_guest_debug(CPUArchState *env)
 {
     gdb_set_stop_cpu(env);

qemu-common.h

@@ -293,7 +293,6 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id);
 void qemu_cpu_kick(void *env);
 void qemu_cpu_kick_self(void);
 int qemu_cpu_is_self(void *env);
-bool all_cpu_threads_idle(void);
 
 /* work queue */
 struct qemu_work_item {