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From: Ido Yariv <ido@wizery.com>
To: linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Shai Fultheim <shai@scalemp.com>
Subject: Re: [PATCH RESEND] x86: Avoid contention on cpa_lock if possible
Date: Sat, 2 Jun 2012 21:56:57 +0300	[thread overview]
Message-ID: <20120602185657.GB15595@WorkStation.localnet> (raw)
In-Reply-To: <1334873492-31255-1-git-send-email-ido@wizery.com>

On Fri, Apr 20, 2012 at 01:11:32AM +0300, Ido Yariv wrote:
> From: Shai Fultheim <shai@scalemp.com>
> 
> Some architectures (e.g. vSMP) do not require to serialize cpa, for
> instance, by guaranteeing that the most recent TLB entry will always be
> used.
> 
> To avoid needless contention on cpa_lock, do not lock/unlock it on such
> architectures.
> 
> Signed-off-by: Shai Fultheim <shai@scalemp.com>
> [ido@wizery.com: added should_serialize_cpa, handled potential race, and
>                  reworded the commit message]
> Signed-off-by: Ido Yariv <ido@wizery.com>
> ---

Ping?

Thanks,
Ido.

  parent reply	other threads:[~2012-06-02 18:57 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-06 12:40 [PATCH] x86: Avoid contention on cpa_lock if possible Ido Yariv
2012-04-19 22:11 ` [PATCH RESEND] " Ido Yariv
2012-05-05 23:49   ` Ido Yariv
2012-06-02 18:56   ` Ido Yariv [this message]
2012-06-06 16:18   ` [tip:x86/mm] x86/pat: " tip-bot for Shai Fultheim
2012-06-06 17:24     ` Peter Zijlstra
2012-06-06 17:41       ` Ingo Molnar
2012-06-06 18:58       ` H. Peter Anvin
2012-06-06 22:18       ` Shai Fultheim (Shai@ScaleMP.com)
2012-06-06 23:05         ` Ido Yariv
2012-06-06 23:07           ` Shai Fultheim (Shai@ScaleMP.com)

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