On Sat 01-08-15 14:49:22, Ulrich Obergfell wrote: > These functions are intended to be used only from inside kernel/watchdog.c > to park/unpark all watchdog threads that are specified in watchdog_cpumask.
I would suggest merging this into Patch2. It is usually better to add new functions along with their users. > Signed-off-by: Ulrich Obergfell <[email protected]> > --- > kernel/watchdog.c | 36 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > > diff --git a/kernel/watchdog.c b/kernel/watchdog.c > index a6ffa43..5571f20 100644 > --- a/kernel/watchdog.c > +++ b/kernel/watchdog.c > @@ -24,6 +24,7 @@ > #include <asm/irq_regs.h> > #include <linux/kvm_para.h> > #include <linux/perf_event.h> > +#include <linux/kthread.h> > > /* > * The run state of the lockup detectors is controlled by the content of the > @@ -666,6 +667,41 @@ static struct smp_hotplug_thread watchdog_threads = { > .unpark = watchdog_enable, > }; > > +/* > + * park all watchdog threads that are specified in 'watchdog_cpumask' > + */ > +static int watchdog_park_threads(void) > +{ > + int cpu, ret = 0; > + > + get_online_cpus(); > + for_each_watchdog_cpu(cpu) { > + ret = kthread_park(per_cpu(softlockup_watchdog, cpu)); > + if (ret) > + break; > + } > + if (ret) { > + for_each_watchdog_cpu(cpu) > + kthread_unpark(per_cpu(softlockup_watchdog, cpu)); > + } > + put_online_cpus(); > + > + return ret; > +} > + > +/* > + * unpark all watchdog threads that are specified in 'watchdog_cpumask' > + */ > +static void watchdog_unpark_threads(void) > +{ > + int cpu; > + > + get_online_cpus(); > + for_each_watchdog_cpu(cpu) > + kthread_unpark(per_cpu(softlockup_watchdog, cpu)); > + put_online_cpus(); > +} > + > static void restart_watchdog_hrtimer(void *info) > { > struct hrtimer *hrtimer = raw_cpu_ptr(&watchdog_hrtimer); > -- > 1.7.11.7 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
