[GIT pull] core udpate for 5.1

[Thomas Gleixner]

Linus,

please pull the latest core-core-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-core-for-linus

A single commit adding a command line parameter which allows to set the
watchdog threshold on the kernel command-line, so kernels with massive
debug facilities enabled won't trigger the watchdog during early boot and
before the threshold can be changed via sysctl.


Thanks,

        tglx

------------------>
Laurence Oberman (1):
      watchdog/core: Add watchdog_thresh command line parameter


 Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
 kernel/watchdog.c                               | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt 
b/Documentation/admin-guide/kernel-parameters.txt
index b90fe3b6bc6c..79b5b473001b 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4957,6 +4957,14 @@
                        or other driver-specific files in the
                        Documentation/watchdog/ directory.
 
+       watchdog_thresh=
+                       [KNL]
+                       Set the hard lockup detector stall duration
+                       threshold in seconds. The soft lockup detector
+                       threshold is set to twice the value. A value of 0
+                       disables both lockup detectors. Default is 10
+                       seconds.
+
        workqueue.watchdog_thresh=
                        If CONFIG_WQ_WATCHDOG is configured, workqueue can
                        warn stall conditions and dump internal state to
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 977918d5d350..8fbfda94a67b 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -199,6 +199,13 @@ static int __init nosoftlockup_setup(char *str)
 }
 __setup("nosoftlockup", nosoftlockup_setup);
 
+static int __init watchdog_thresh_setup(char *str)
+{
+       get_option(&str, &watchdog_thresh);
+       return 1;
+}
+__setup("watchdog_thresh=", watchdog_thresh_setup);
+
 #ifdef CONFIG_SMP
 int __read_mostly sysctl_softlockup_all_cpu_backtrace;