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Message-ID: <MW3PR12MB455352BA6EEEB3A18FE2B4A2950C9@MW3PR12MB4553.namprd12.prod.outlook.com>
Date:   Wed, 23 Nov 2022 22:55:35 +0000
From:   "Moger, Babu" <Babu.Moger@....com>
To:     Reinette Chatre <reinette.chatre@...el.com>,
        "corbet@....net" <corbet@....net>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>
CC:     "fenghua.yu@...el.com" <fenghua.yu@...el.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "paulmck@...nel.org" <paulmck@...nel.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "quic_neeraju@...cinc.com" <quic_neeraju@...cinc.com>,
        "rdunlap@...radead.org" <rdunlap@...radead.org>,
        "damien.lemoal@...nsource.wdc.com" <damien.lemoal@...nsource.wdc.com>,
        "songmuchun@...edance.com" <songmuchun@...edance.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "jpoimboe@...nel.org" <jpoimboe@...nel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "chang.seok.bae@...el.com" <chang.seok.bae@...el.com>,
        "pawan.kumar.gupta@...ux.intel.com" 
        <pawan.kumar.gupta@...ux.intel.com>,
        "jmattson@...gle.com" <jmattson@...gle.com>,
        "daniel.sneddon@...ux.intel.com" <daniel.sneddon@...ux.intel.com>,
        "Das1, Sandipan" <Sandipan.Das@....com>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "james.morse@....com" <james.morse@....com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "eranian@...gle.com" <eranian@...gle.com>
Subject: RE: [PATCH v8 08/13] x86/resctrl: Add sysfs interface to read
 mbm_total_bytes_config

[AMD Official Use Only - General]



> -----Original Message-----
> From: Reinette Chatre <reinette.chatre@...el.com>
> Sent: Wednesday, November 23, 2022 4:28 PM
> To: Moger, Babu <Babu.Moger@....com>; corbet@....net;
> tglx@...utronix.de; mingo@...hat.com; bp@...en8.de
> Cc: fenghua.yu@...el.com; dave.hansen@...ux.intel.com; x86@...nel.org;
> hpa@...or.com; paulmck@...nel.org; akpm@...ux-foundation.org;
> quic_neeraju@...cinc.com; rdunlap@...radead.org;
> damien.lemoal@...nsource.wdc.com; songmuchun@...edance.com;
> peterz@...radead.org; jpoimboe@...nel.org; pbonzini@...hat.com;
> chang.seok.bae@...el.com; pawan.kumar.gupta@...ux.intel.com;
> jmattson@...gle.com; daniel.sneddon@...ux.intel.com; Das1, Sandipan
> <Sandipan.Das@....com>; tony.luck@...el.com; james.morse@....com;
> linux-doc@...r.kernel.org; linux-kernel@...r.kernel.org;
> bagasdotme@...il.com; eranian@...gle.com
> Subject: Re: [PATCH v8 08/13] x86/resctrl: Add sysfs interface to read
> mbm_total_bytes_config
> 
> Hi Babu,
> 
> On 11/23/2022 10:35 AM, Moger, Babu wrote:
> > On 11/22/22 18:19, Reinette Chatre wrote:
> >> On 11/4/2022 1:00 PM, Babu Moger wrote:
> 
> ...
> 
> >>> @@ -1521,6 +1593,12 @@ static struct rftype res_common_files[] = {
> >>>  		.seq_show	= max_threshold_occ_show,
> >>>  		.fflags		= RF_MON_INFO | RFTYPE_RES_CACHE,
> >>>  	},
> >>> +	{
> >>> +		.name		= "mbm_total_bytes_config",
> >>> +		.mode		= 0444,
> >>> +		.kf_ops		= &rdtgroup_kf_single_ops,
> >>> +		.seq_show	= mbm_total_bytes_config_show,
> >>> +	},
> >>>  	{
> >>>  		.name		= "cpus",
> >>>  		.mode		= 0644,
> >>> @@ -1627,6 +1705,15 @@ void __init thread_throttle_mode_init(void)
> >>>  	rft->fflags = RF_CTRL_INFO | RFTYPE_RES_MB;  }
> >>>
> >>> +void mbm_config_rftype_init(void)
> >> Does this need __init?
> >
> > Not. Required. Will remove it.
> >
> 
> Your response is not clear to me. I am not asking for any removal. My question
> is whether the function needs the __init attribute. That is, should this be:
> 
> void __init mbm_config_rftype_init(void)

Oh.. I mis-understood. 
Yes. It is called from rdt_get_mon_l3_config which will be __init routine. It seems appropriate to keep the __init attribute.
Thanks
Babu

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