diff options
| -rw-r--r-- | kernel/watchdog.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 9a1c78769a33..dcc4990097a2 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -679,6 +679,29 @@ static void watchdog_disable_all_cpus(void) } /* + * Update the run state of the lockup detectors. + */ +static int proc_watchdog_update(void) +{ + int err = 0; + + /* + * Watchdog threads won't be started if they are already active. + * The 'watchdog_running' variable in watchdog_*_all_cpus() takes + * care of this. If those threads are already active, the sample + * period will be updated and the lockup detectors will be enabled + * or disabled 'on the fly'. + */ + if (watchdog_enabled && watchdog_thresh) + err = watchdog_enable_all_cpus(true); + else + watchdog_disable_all_cpus(); + + return err; + +} + +/* * proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh */ |