linux-kernel - RE: [PATCH v4 08/13] x86/resctrl : Introduce data structure to support monitor configuration

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Date:   Fri, 16 Sep 2022 21:23:45 +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>,
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        <pawan.kumar.gupta@...ux.intel.com>,
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Subject: RE: [PATCH v4 08/13] x86/resctrl : Introduce data structure to
 support monitor configuration

[AMD Official Use Only - General]



> -----Original Message-----
> From: Reinette Chatre <reinette.chatre@...el.com>
> Sent: Friday, September 16, 2022 10:56 AM
> 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 v4 08/13] x86/resctrl : Introduce data structure to support
> monitor configuration
> 
> Hi Babu,
> 
> (Please watch for the stray space in the subject line before the ":")

Oh. Ok

> 
> On 9/7/2022 11:00 AM, Babu Moger wrote:
> > Add couple of fields in mon_evt to support Bandwidth Monitoring Event
> > Configuratio (BMEC) and also update the "mon_features".
> >
> > The sysfs file "mon_features" will display the monitor configuration
> > if supported.
> >
> > Before the change.
> > 	$cat /sys/fs/resctrl/info/L3_MON/mon_features
> > 	llc_occupancy
> > 	mbm_total_bytes
> > 	mbm_local_bytes
> >
> > After the change if BMEC is supported.
> > 	$cat /sys/fs/resctrl/info/L3_MON/mon_features
> > 	llc_occupancy
> > 	mbm_total_bytes
> > 	mbm_total_config
> > 	mbm_local_bytes
> > 	mbm_local_config
> >
> > Signed-off-by: Babu Moger <babu.moger@....com>
> > ---
> 
> ...
> 
> > diff --git a/arch/x86/kernel/cpu/resctrl/internal.h
> > b/arch/x86/kernel/cpu/resctrl/internal.h
> > index c049a274383c..45923eb4022f 100644
> > --- a/arch/x86/kernel/cpu/resctrl/internal.h
> > +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> > @@ -72,11 +72,15 @@ DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key);
> >   * struct mon_evt - Entry in the event list of a resource
> >   * @evtid:		event id
> >   * @name:		name of the event
> > + * @configurable:	true if the event is configurable
> > + * @config_name:	sysfs file name of the event if configurable
> >   * @list:		entry in &rdt_resource->evt_list
> >   */
> >  struct mon_evt {
> >  	u32			evtid;
> >  	char			*name;
> > +	bool 			configurable;
> > +	char			*config_name;
> >  	struct list_head	list;
> >  };
> 
> Please ensure there is no spaces before tabs - this is a checkpatch failure.
> Running this series through checkpatch.pl encounters several formatting issues.
> Could you please run this series through "checkpatch.pl --strict --codespell"
> before the next submission? The warnings related to code where you are
> following the existing style need not be addressed, but the "spaces before tabs"
> like above, unnecessary empty lines, alignment issues, spelling issues ... please
> address those.

Sure. Will do.
Thanks
Babu