linux-kernel - Re: [PATCH RFC] ioctl based CAT interface

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Message-ID: <20151203215839.GD14427@amd>
Date:	Thu, 3 Dec 2015 22:58:39 +0100
From:	Pavel Machek <pavel@....cz>
To:	Marcelo Tosatti <mtosatti@...hat.com>
Cc:	Luiz Capitulino <lcapitulino@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vikas Shivappa <vikas.shivappa@...el.com>,
	Tejun Heo <tj@...nel.org>, Yu Fenghua <fenghua.yu@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] ioctl based CAT interface

Hi!
> 
> Attached is an early version of the ioctl based CAT interface we
> have been working on.
> 
> NOTE: it does not compile, there is no locking, but should 
> be sufficient for interested people to comment.
> 
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index db3622f..293726b 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -757,6 +757,14 @@ config HPET_EMULATE_RTC
>  	def_bool y
>  	depends on HPET_TIMER && (RTC=y || RTC=m || RTC_DRV_CMOS=m || RTC_DRV_CMOS=y)
>  
> +config CACHE_RESERVATION
> +	tristate "Cache Reservation Support"
> +	default n
> +	---help---
> +	  This feature makes use of Intel's Cache Allocation Technology to allow the
> +	  reservation of portions of the L3 cache to specific tasks. Please, see
> +	  Documentation/x86/cache-reservation.txt for more

Including the Documentation/x86/cache-reservation.txt file in the
patch would be nice ;-).
									Pavel
									
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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