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

[Avi Kivity <avi@xxxxxxxxxx>]

On 10/23/2011 09:07 PM, Raghavendra K T wrote:
> Added configuration support to enable debug information
> for KVM Guests in debugfs
>     
> Signed-off-by: Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Suzuki Poulose <suzuki@xxxxxxxxxx>
> Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>
> ---
> 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
> +     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"
>  
>

This might be better implemented through tracepoints, which an be
enabled dynamically.

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


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