kabi: reserve space for struct cpu_stop_work

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JBL0
CVE: NA

-------------------------------

Reserve space for struct cpu_stop_work. Changing this struct will
affect set_cpus_allowed_ptr(), so reserve one kabi field.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NCheng Jian <cj.chengjian@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

include/linux/stop_machine.h

@@ -6,6 +6,7 @@
 #include <linux/cpumask.h>
 #include <linux/smp.h>
 #include <linux/list.h>
+#include <linux/kabi.h>
 
 /*
  * stop_cpu[s]() is simplistic per-cpu maximum priority cpu
@@ -26,6 +27,7 @@ struct cpu_stop_work {
 	cpu_stop_fn_t		fn;
 	void			*arg;
 	struct cpu_stop_done	*done;
+	KABI_RESERVE(1)
 };
 
 int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg);