Messages in this thread | | | Date | Wed, 5 Jun 2013 10:08:18 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123 native_smp_send_reschedule, round 2 |
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On Wed, 5 Jun 2013, Michael Wang wrote:
> > Just to not let this thread sleep -- I am seeing this as well, even with > > current Linus' tree (git HEAD == aa4f608). > > Have you tried this: > > diff --git a/drivers/cpufreq/cpufreq_governor.c > b/drivers/cpufreq/cpufreq_governor.c > index 443442d..449be88 100644 > --- a/drivers/cpufreq/cpufreq_governor.c > +++ b/drivers/cpufreq/cpufreq_governor.c > @@ -26,6 +26,7 @@ > #include <linux/tick.h> > #include <linux/types.h> > #include <linux/workqueue.h> > +#include <linux/cpu.h> > > #include "cpufreq_governor.h" > > @@ -180,8 +181,10 @@ void gov_queue_work(struct dbs_data *dbs_data, > struct cpufreq_policy *policy, > if (!all_cpus) { > __gov_queue_work(smp_processor_id(), dbs_data, delay); > } else { > + get_online_cpus(); > for_each_cpu(i, policy->cpus) > __gov_queue_work(i, dbs_data, delay); > + put_online_cpus(); > } > } > EXPORT_SYMBOL_GPL(gov_queue_work); > > Does it works?
Yes, the warning is gone with this patch.
Tested-by: Jiri Kosina <jkosina@suse.cz>
Thanks,
-- Jiri Kosina SUSE Labs
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