linux-kernel - Re: [PATCH v3 03/10] x86/resctrl: Add a new resource type RDT_RESOURCE

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Date:   Fri, 26 Aug 2022 09:59:33 -0500
From:   "Moger, Babu" <babu.moger@....com>
To:     fenghua.yu@...el.com, reinette.chatre@...el.com,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de
Cc:     eranian@...gle.com, dave.hansen@...ux.intel.com, x86@...nel.org,
        hpa@...or.com, corbet@....net, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, bagasdotme@...il.com
Subject: Re: [PATCH v3 03/10] x86/resctrl: Add a new resource type
 RDT_RESOURCE_SMBA

Hi Reinette,

On 8/22/22 08:43, Babu Moger wrote:
> Adds a new resource type RDT_RESOURCE_SMBA to handle the QoS
> enforcement policies on the external slow memory.
>
> Signed-off-by: Babu Moger <babu.moger@....com>
> Reviewed-by: Ingo Molnar <mingo@...nel.org>
> ---
>  arch/x86/kernel/cpu/resctrl/core.c     |   12 ++++++++++++
>  arch/x86/kernel/cpu/resctrl/internal.h |    1 +
>  2 files changed, 13 insertions(+)
>
> diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
> index a5c51a14fbce..6c38427b71a2 100644
> --- a/arch/x86/kernel/cpu/resctrl/core.c
> +++ b/arch/x86/kernel/cpu/resctrl/core.c
> @@ -100,6 +100,18 @@ struct rdt_hw_resource rdt_resources_all[] = {
>  			.fflags			= RFTYPE_RES_MB,
>  		},
>  	},
> +	[RDT_RESOURCE_SMBA] =
> +	{
> +		.r_resctrl = {
> +			.rid			= RDT_RESOURCE_SMBA,
> +			.name			= "SB",


For some reason some of the messages are not landing in the mailbox.

Yes.  I will change it to "SMBA" instead of just "SB".

Thanks

Babu


> +			.cache_level		= 3,
> +			.domains		= domain_init(RDT_RESOURCE_SMBA),
> +			.parse_ctrlval		= parse_bw,
> +			.format_str		= "%d=%*u",
> +			.fflags			= RFTYPE_RES_MB,
> +		},
> +	},
>  };
>  
>  /*
> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
> index 1d647188a43b..24a1dfeb6cb2 100644
> --- a/arch/x86/kernel/cpu/resctrl/internal.h
> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> @@ -418,6 +418,7 @@ enum resctrl_res_level {
>  	RDT_RESOURCE_L3,
>  	RDT_RESOURCE_L2,
>  	RDT_RESOURCE_MBA,
> +	RDT_RESOURCE_SMBA,
>  
>  	/* Must be the last */
>  	RDT_NUM_RESOURCES,
>
>
-- 
Thanks
Babu Moger