From: Joao Martins <joao.m.martins@oracle.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Sean Christopherson" <sean.j.christopherson@intel.com>,
"Vitaly Kuznetsov" <vkuznets@redhat.com>,
"Wanpeng Li" <wanpengli@tencent.com>,
"Jim Mattson" <jmattson@google.com>,
"Joerg Roedel" <joro@8bytes.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Daniel Lezcano" <daniel.lezcano@linaro.org>,
linux-pm@vger.kernel.org,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH v1] cpuidle-haltpoll: vcpu hotplug support
Date: Thu, 29 Aug 2019 15:24:31 +0100 [thread overview]
Message-ID: <311c2ffe-f840-9990-c1a7-5561cc5a0f54@oracle.com> (raw)
In-Reply-To: <8c459d91-bc47-2ff4-7d3b-243ed4e466cb@oracle.com>
On 8/29/19 2:50 PM, Joao Martins wrote:
> On 8/29/19 12:56 PM, Marcelo Tosatti wrote:
>> Hi Joao,
>>
>> On Wed, Aug 28, 2019 at 07:56:50PM +0100, Joao Martins wrote:
>>> +static void haltpoll_uninit(void)
>>> +{
>>> + unsigned int cpu;
>>> +
>>> + cpus_read_lock();
>>> +
>>> + for_each_online_cpu(cpu) {
>>> + struct cpuidle_device *dev =
>>> + per_cpu_ptr(haltpoll_cpuidle_devices, cpu);
>>> +
>>> + if (!dev->registered)
>>> + continue;
>>> +
>>> + arch_haltpoll_disable(cpu);
>>> + cpuidle_unregister_device(dev);
>>> + }
>>
>> 1)
>>
>>> +
>>> + cpuidle_unregister(&haltpoll_driver);
>>
>> cpuidle_unregister_driver.
>
> Will fix -- this was an oversight.
>
>>
>>> + free_percpu(haltpoll_cpuidle_devices);
>>> + haltpoll_cpuidle_devices = NULL;
>>> +
>>> + cpus_read_unlock();
>>
>> Any reason you can't cpus_read_unlock() at 1) ?
>>
> No, let me adjust that too.
>
>> Looks good otherwise.
>>
BTW, should I take this as a Acked-by, Reviewed-by, or neither? :)
Joao
next prev parent reply other threads:[~2019-08-29 14:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-28 18:56 [PATCH v1] cpuidle-haltpoll: vcpu hotplug support Joao Martins
2019-08-28 23:39 ` Rafael J. Wysocki
2019-08-29 11:56 ` Marcelo Tosatti
2019-08-29 13:50 ` Joao Martins
2019-08-29 14:24 ` Joao Martins [this message]
2019-08-29 14:40 ` Marcelo Tosatti
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