[PATCH] use noinline for rest_init()

gcc-3.4 incorretly inlines rest_init() into start_kernel(), causing things to
crash when the .text.init section gets unloaded.  Use noinline to prevent
that.

init/main.c

@@ -378,9 +378,11 @@ static void __init smp_init(void)
  * between the root thread and the init thread may cause start_kernel to
  * be reaped by free_initmem before the root thread has proceeded to
  * cpu_idle.
+ *
+ * gcc-3.4 accidentally inlines this function, so use noinline.
  */
 
-static void rest_init(void)
+static void noinline rest_init(void)
 {
 	kernel_thread(init, NULL, CLONE_FS | CLONE_SIGHAND);
 	unlock_kernel();