linux-kernel - Re: [PATCH RFC V2 4/5] kvm guest : Added configuration support to enable debug information for KVM Guests

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Message-ID: <1319450505.5660.5.camel@lappy>
Date:	Mon, 24 Oct 2011 12:01:45 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>, KVM <kvm@...r.kernel.org>,
	Sedat Dilek <sedat.dilek@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Virtualization <virtualization@...ts.linux-foundation.org>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Gleb Natapov <gleb@...hat.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Xen <xen-devel@...ts.xensource.com>, Avi Kivity <avi@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Suzuki Poulose <suzuki@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH RFC V2 4/5] kvm guest : Added configuration support to
 enable debug information for KVM Guests

On Mon, 2011-10-24 at 00:37 +0530, Raghavendra K T wrote:
> Added configuration support to enable debug information
> for KVM Guests in debugfs
>     
> Signed-off-by: Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
> Signed-off-by: Suzuki Poulose <suzuki@...ibm.com>
> Signed-off-by: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
> ---
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 1f03f82..ed34269 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -562,6 +562,15 @@ config KVM_GUEST
>  	  This option enables various optimizations for running under the KVM
>  	  hypervisor.
>  
> +config KVM_DEBUG_FS
> +	bool "Enable debug information for KVM Guests in debugfs"
> +	depends on KVM_GUEST

Shouldn't it depend on DEBUG_FS as well?

> +	default n
> +	---help---
> +	  This option enables collection of various statistics for KVM guest.
> +   	  Statistics are displayed in debugfs filesystem. Enabling this option
> +	  may incur significant overhead.
> +
>  source "arch/x86/lguest/Kconfig"
>  
>  config PARAVIRT

-- 

Sasha.

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