From: Matt Fleming <mfleming@suse.de>
Date: Wed, 9 Oct 2019 12:17:32 +0100
Subject: printk/panic: printk_bust_locks() doesn't exist for RT
Patch-mainline: Never, RT specific
References: SLE Realtime Extension

Fix the following SLE-specific patch,

  patches.suse/printk-panic-Avoid-deadlock-in-printk-after-stopping-CPUs-by-NMI.patch

Guard the call to printk_bust_locks() with CONFIG_PREEMPT_RT_FULL
otherwise the kernel doesn't build.

Signed-off-by: Matt Fleming <mfleming@suse.de>
---
 arch/x86/kernel/crash.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -137,7 +137,9 @@ static void kdump_nmi_callback(int cpu,
 void kdump_nmi_shootdown_cpus(void)
 {
 	nmi_shootdown_cpus(kdump_nmi_callback);
+#ifndef CONFIG_PREEMPT_RT_FULL
 	printk_bust_locks();
+#endif
 
 	disable_local_APIC();
 }