linux-kernel - Re: [PATCH 2/3] kvm: use this_cpu_xxx replace percpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4EA54694.5070703@redhat.com>
Date:	Mon, 24 Oct 2011 13:05:56 +0200
From:	Avi Kivity <avi@...hat.com>
To:	"Alex,Shi" <alex.shi@...el.com>
CC:	Christoph Lameter <cl@...two.org>, "tj@...nel.org" <tj@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"eric.dumazet@...il.com" <eric.dumazet@...il.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"kaber@...sh.net" <kaber@...sh.net>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"jeremy@...source.com" <jeremy@...source.com>
Subject: Re: [PATCH 2/3] kvm: use this_cpu_xxx replace percpu_xxx funcs

On 10/24/2011 04:50 AM, Alex,Shi wrote:
> On Thu, 2011-10-20 at 15:34 +0800, Alex,Shi wrote:
> > percpu_xxx funcs are duplicated with this_cpu_xxx funcs, so replace them
> > for further code clean up.
> > 
> > And in preempt safe scenario, __this_cpu_xxx funcs has a bit better
> > performance since __this_cpu_xxx has no redundant preempt_disable()
> > 
>
> Avi: 
> Would you like to give some comments of this? 
>

Sorry, was travelling:

Acked-by: Avi Kivity <avi@...hat.com>

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/