alinux: mm: fix undefined reference to printk_ratelimit_state

fix #27508738

The variable printk_ratelimit_state is not defined if CONFIG_PRINTK is
not set, but is directly accessed in mm/oom_kill.c without considering
the config.

Consider CONFIG_PRINTK when accessing printk_ratelimit_state in
mm/oom_kill.c.

Fixes: 41a1a935 ("alinux: oom: add ratelimit printk to prevent softlockup")
Reported-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NXu Yu <xuyu@linux.alibaba.com>
Reviewed-by: Nzhongjiang-ali <zhongjiang-ali@linux.alibaba.com>
Acked-by: NCaspar Zhang <caspar@linux.alibaba.com>

mm/oom_kill.c

@@ -862,8 +862,10 @@ static void __oom_kill_process(struct task_struct *victim, bool is_memcg)
 	bool can_oom_reap = true;
 	bool suppress_print = false;
 
+#ifdef CONFIG_PRINTK
 	if (is_memcg && __ratelimit(&printk_ratelimit_state))
 		suppress_print = true;
+#endif
 	p = find_lock_task_mm(victim);
 	if (!p) {
 		put_task_struct(victim);
@@ -993,8 +995,10 @@ static void oom_kill_process(struct oom_control *oc, const char *message)
 	 * Meanwhile, Use printk_ratelimit_state rather than oom_memcg_rs to
 	 * not suppress important print message overly.
 	 */
+#ifdef CONFIG_PRINTK
 	if (is_memcg_oom(oc) && __ratelimit(&printk_ratelimit_state))
 		suppress_print = true;
+#endif
 
 	if (!suppress_print)
 		pr_err("%s: Kill process %d (%s) score %u or sacrifice child\n",