From: Helge Deller <deller@gmx.de>
To: linux-parisc@vger.kernel.org,
James Bottomley <James.Bottomley@HansenPartnership.com>,
John David Anglin <dave.anglin@bell.net>
Subject: [PATCH] parisc: Suspend lockup detectors before system halt
Date: Tue, 25 Jul 2017 21:41:41 +0200 [thread overview]
Message-ID: <20170725194141.GA14760@p100.box> (raw)
Some machines can't power off the machine, so disable the lockup detectors to
avoid this watchdog BUG to show up every few seconds:
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd-shutdow:1]
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.9+
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index b64d7d2..a45a67d 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -53,6 +53,7 @@
#include <linux/uaccess.h>
#include <linux/rcupdate.h>
#include <linux/random.h>
+#include <linux/nmi.h>
#include <asm/io.h>
#include <asm/asm-offsets.h>
@@ -145,6 +146,7 @@ void machine_power_off(void)
/* prevent soft lockup/stalled CPU messages for endless loop. */
rcu_sysrq_start();
+ lockup_detector_suspend();
for (;;);
}
next reply other threads:[~2017-07-25 19:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-25 19:41 Helge Deller [this message]
2017-07-25 19:47 ` [PATCH] parisc: Suspend lockup detectors before system halt Rolf Eike Beer
2017-07-25 19:55 ` Helge Deller
2017-07-25 20:00 ` Helge Deller
2017-07-25 20:01 ` Rolf Eike Beer
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