From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 15 Mar 2011 16:08:33 +0000 (+0100)
Subject: [S390] kexec: Disable ftrace during kexec
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6966727db1389f4926c6fa6e87a600112a5658b9;p=deliverable%2Flinux.git

[S390] kexec: Disable ftrace during kexec

Disable ftrace during kexec. Same as on x86/powerpc.
ac4414e "powerpc/kdump: Disable ftrace during kexec".

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index a922d51df6bf..b09b9c62573e 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -12,6 +12,7 @@
 #include <linux/kexec.h>
 #include <linux/delay.h>
 #include <linux/reboot.h>
+#include <linux/ftrace.h>
 #include <asm/cio.h>
 #include <asm/setup.h>
 #include <asm/pgtable.h>
@@ -71,6 +72,7 @@ static void __machine_kexec(void *data)
 
 void machine_kexec(struct kimage *image)
 {
+	tracer_disable();
 	smp_send_stop();
 	smp_switch_to_ipl_cpu(__machine_kexec, image);
 }