linux-kernel - RE: [PATCH v3] x86/resctrl: mba_MBps: Fall back to total b/w if local b/w unavailable

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Date:   Thu, 26 Oct 2023 22:59:32 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     "babu.moger@....com" <babu.moger@....com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "Peter Newman" <peternewman@...gle.com>,
        Jonathan Corbet <corbet@....net>,
        Shuah Khan <skhan@...uxfoundation.org>,
        "x86@...nel.org" <x86@...nel.org>
CC:     Shaopeng Tan <tan.shaopeng@...itsu.com>,
        James Morse <james.morse@....com>,
        Jamie Iles <quic_jiles@...cinc.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH v3] x86/resctrl: mba_MBps: Fall back to total b/w if local
 b/w unavailable

>>   static void mbm_bw_count(u32 rmid, struct rmid_read *rr)
>>   {
>> -	struct mbm_state *m = &rr->d->mbm_local[rmid];
>> +	enum resctrl_event_id mba_mbps_evt_id = pick_mba_mbps_event();
>
> How about evt_id instead of mba_mbps_evt_id? It seems pretty mouthful 
> for temp variable.

Sure. The long name made sense as a globa. But as you say, a temp
variable doesn't need to be so verbose. Context from being initialized
by the pick_mba_mbps_event() function also helps reader to see what
it is used for.

I'll make that change if others vote for the v3 approach over v2.

-Tony