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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-10 13:46:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-10 13:46:08 -0700 |
| commit | 077d3dafe63cb26653f2b171fa102dbefd242fa8 (patch) | |
| tree | 69f57b478c9ff6ce3b86c340ae4ebb2e27b44716 | |
| parent | dbbdf54c7206bf3f201f9ddaa5f4dd87835271cc (diff) | |
| parent | 11295055526308ee71d82dc97f0a9ca2dd61c3b9 (diff) | |
Merge branch 'core-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull watchdog core update from Thomas Gleixner:
"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"
* 'core-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
watchdog/core: Add watchdog_thresh command line parameter
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 8 | ||||
| -rw-r--r-- | kernel/watchdog.c | 7 |
2 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index aa4f4cfd0491..2b8ee90bb644 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5078,6 +5078,14 @@ 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; |