From: Xu Qiang xuqiang36@huawei.com
ascend inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4F3V1 CVE: NA
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When hard lockup detection is disabled, core lockup detection is not performed.
Signed-off-by: Xu Qiang xuqiang36@huawei.com Reviewed-by: Ding Tianhong dingtianhong@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com Reviewed-by: Ding Tianhong dingtianhong@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- kernel/watchdog_hld.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/kernel/watchdog_hld.c b/kernel/watchdog_hld.c index 8af4ab738ce9..060873ff8a6d 100644 --- a/kernel/watchdog_hld.c +++ b/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.