From cdf38bf0f758b8b6c06a7b14f0371ca04e6b81a3 Mon Sep 17 00:00:00 2001
From: Huibin Hong <huibin.hong@rock-chips.com>
Date: Mon, 22 Aug 2022 12:35:53 +0000
Subject: [PATCH] arm64: add dump_stack in local_cpu_stop

Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
Change-Id: I7aec6471876aa4df3a4cc012a9d6b4c6997c3952
---
 arch/arm64/kernel/smp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 070e487e74ad..53c58a210f7a 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -852,6 +852,10 @@ void arch_irq_work_raise(void)
 
 static void local_cpu_stop(void)
 {
+	if (system_state <= SYSTEM_RUNNING) {
+		pr_crit("CPU%u: stopping\n", smp_processor_id());
+		dump_stack();
+	}
 	set_cpu_online(smp_processor_id(), false);
 
 	local_daif_mask();