stop_machine: Wean existing callers off stop_machine_run()

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index 6f8696c..aad93cd 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -91,8 +91,8 @@
 		 * rdp->cpu is the current cpu.
 		 *
 		 * cpu_online_map is updated by the _cpu_down()
-		 * using stop_machine_run(). Since we're in irqs disabled
-		 * section, stop_machine_run() is not exectuting, hence
+		 * using __stop_machine(). Since we're in irqs disabled
+		 * section, __stop_machine() is not exectuting, hence
 		 * the cpu_online_map is stable.
 		 *
 		 * However,  a cpu might have been offlined _just_ before