Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) client-ip=2620:137:e000::3:6;
Date:   Fri, 29 Sep 2023 18:09:59 +0300 (EEST)
From:   =?ISO-8859-15?Q?Ilpo_J=E4rvinen?= <ilpo.jarvinen@linux.intel.com>
To:     Babu Moger <babu.moger@amd.com>
cc:     corbet@lwn.net, reinette.chatre@intel.com, tglx@linutronix.de,
        mingo@redhat.com, bp@alien8.de, fenghua.yu@intel.com,
        dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
        paulmck@kernel.org, akpm@linux-foundation.org,
        quic_neeraju@quicinc.com, rdunlap@infradead.org,
        damien.lemoal@opensource.wdc.com, songmuchun@bytedance.com,
        peterz@infradead.org, jpoimboe@kernel.org, pbonzini@redhat.com,
        chang.seok.bae@intel.com, pawan.kumar.gupta@linux.intel.com,
        jmattson@google.com, daniel.sneddon@linux.intel.com,
        sandipan.das@amd.com, tony.luck@intel.com, james.morse@arm.com,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        bagasdotme@gmail.com, eranian@google.com,
        christophe.leroy@csgroup.eu, jarkko@kernel.org,
        adrian.hunter@intel.com, quic_jiles@quicinc.com,
        peternewman@google.com
Subject: Re: [PATCH v10 02/10] x86/resctrl: Simplify rftype flag
 definitions
In-Reply-To: <20230915224227.1336967-3-babu.moger@amd.com>
Message-ID: <cce19488-3c42-e782-279c-141e3912f8ce@linux.intel.com>
References: <20230915224227.1336967-1-babu.moger@amd.com> <20230915224227.1336967-3-babu.moger@amd.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="8323329-191885404-1696000210=:1989"
Precedence: bulk

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--8323329-191885404-1696000210=:1989
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 8BIT

On Fri, 15 Sep 2023, Babu Moger wrote:

> The rftype flags are bitmaps used for adding files under resctrl
> filesystem. Some of these bitmaps have one extra level of indirection
> which is not necessary.
> 
> Make them all direct definition to be consistent and easier to read.
> 
> Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
> Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---
>  arch/x86/kernel/cpu/resctrl/internal.h | 9 +++------
>  arch/x86/kernel/cpu/resctrl/rdtgroup.c | 6 +++++-
>  2 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
> index 85ceaf9a31ac..62767774810d 100644
> --- a/arch/x86/kernel/cpu/resctrl/internal.h
> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> @@ -243,12 +243,9 @@ struct rdtgroup {
>   */
>  #define RFTYPE_INFO			BIT(0)
>  #define RFTYPE_BASE			BIT(1)
> -#define RF_CTRLSHIFT			4
> -#define RF_MONSHIFT			5
> -#define RF_TOPSHIFT			6
> -#define RFTYPE_CTRL			BIT(RF_CTRLSHIFT)
> -#define RFTYPE_MON			BIT(RF_MONSHIFT)
> -#define RFTYPE_TOP			BIT(RF_TOPSHIFT)
> +#define RFTYPE_CTRL			BIT(4)
> +#define RFTYPE_MON			BIT(5)
> +#define RFTYPE_TOP			BIT(6)
>  #define RFTYPE_RES_CACHE		BIT(8)
>  #define RFTYPE_RES_MB			BIT(9)
>  #define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index f0d163950969..7ddfa4b470e6 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -3242,7 +3242,11 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
>  		goto out_destroy;
>  	}
>  
> -	files = RFTYPE_BASE | BIT(RF_CTRLSHIFT + rtype);
> +	if (rtype == RDTCTRL_GROUP)
> +		files = RFTYPE_BASE | RFTYPE_CTRL;
> +	else
> +		files = RFTYPE_BASE | RFTYPE_MON;
> +
>  	ret = rdtgroup_add_files(kn, files);
>  	if (ret) {
>  		rdt_last_cmd_puts("kernfs fill error\n");
> 

Reviewed-by: Ilpo J?rvinen <ilpo.jarvinen@linux.intel.com>

-- 
 i.

--8323329-191885404-1696000210=:1989--