watchdog/corelockup: Depends on the hardlockup detection switch

ascend inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4F3V1
CVE: NA

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

When hard lockup detection is disabled, core lockup
detection is not performed.
Signed-off-by: NXu Qiang <xuqiang36@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

kernel/watchdog_hld.c

@@ -148,6 +148,10 @@ void watchdog_check_hrtimer(void)
 	if (cpu == smp_processor_id())
 		return;
 
+	/* return if hard lockup detector is disable */
+	if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED))
+		return;
+
 	/*
 	 * The freq of hrtimer is fast than nmi interrupts and
 	 * the core mustn't hangs if hrtimer still working.