linux-kernel - Re: [PATCH RFC V2 2/2] kvm PLE handler: Choose better candidate for directed yield

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Date:	Wed, 11 Jul 2012 08:30:50 +0530
From:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Ingo Molnar <mingo@...hat.com>, Avi Kivity <avi@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	S390 <linux-s390@...r.kernel.org>,
	Carsten Otte <cotte@...ibm.com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	KVM <kvm@...r.kernel.org>, chegu vinod <chegu_vinod@...com>,
	"Andrew M. Theurer" <habanero@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, X86 <x86@...nel.org>,
	Gleb Natapov <gleb@...hat.com>, linux390@...ibm.com,
	Srivatsa Vaddagiri <srivatsa.vaddagiri@...il.com>,
	Joerg Roedel <joerg.roedel@....com>
Subject: Re: [PATCH RFC V2 2/2] kvm PLE handler: Choose better candidate for
 directed yield

On 07/11/2012 02:20 AM, Ingo Molnar wrote:
>
> * Raghavendra K T<raghavendra.kt@...ux.vnet.ibm.com>  wrote:
>
>> --- a/virt/kvm/kvm_main.c
>> +++ b/virt/kvm/kvm_main.c
>> @@ -1595,6 +1595,9 @@ void kvm_vcpu_on_spin(struct kvm_vcpu *me)
>>   				continue;
>>   			if (waitqueue_active(&vcpu->wq))
>>   				continue;
>> +			if (!kvm_arch_vcpu_check_and_update_eligible(vcpu)) {
>> +				continue;
>> +			}
>
> Saw this fly by for a second time and now it annoyed me enough
> to mention it: those curly braces are superfluous and should be
> dropped.
>

Oops! Sorry.will remove {} and resend with Rik's reviewed-by. TBH,
block got simplified after iterations (local), this one leftout. my
mistake.

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