Re: [PATCH] cpufreq: prevent 'policy->cpus' become offline in __gov_queue_work()
From: Rafael J. Wysocki
Date: Wed Jun 05 2013 - 08:28:51 EST
On Wednesday, June 05, 2013 04:58:44 PM Michael Wang wrote:
> Hi, Viresh
> On 06/05/2013 04:53 PM, Viresh Kumar wrote:
> >> It was caused by the policy->cpus changed during the process of
> >> __gov_queue_work(), in other word, cpu offline happened.
> >> This patch will use get/put_online_cpus() to prevent the offline
> >> happen inside __gov_queue_work(), after applied the patch, the
> >> warning is gone as Jiri tested:
> >> Link: https://lkml.org/lkml/2013/6/5/88
> >> CC: "Rafael J. Wysocki" <rjw@xxxxxxx>
> >> CC: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> >> Reported-by: Borislav Petkov <bp@xxxxxxxxx>
> >> Reported-by: Jiri Kosina <jkosina@xxxxxxx>
> >> Tested-by: Jiri Kosina <jkosina@xxxxxxx>
> >> Signed-off-by: Michael Wang <wangyun@xxxxxxxxxxxxxxxxxx>
> >> ---
> >> drivers/cpufreq/cpufreq_governor.c | 3 +++
> >> 1 files changed, 3 insertions(+), 0 deletions(-)
> > Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> Thanks for your ack :)
Queued up for 3.10.
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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