linux-kernel - RE: [RFC PATCH 0/2] Resctrl

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Message-ID: <SJ1PR11MB6083D16326FF2D56C4A1CE20FC5CA@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date:   Tue, 20 Jun 2023 03:49:36 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     James Morse <james.morse@....com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        Drew Fustini <dfustini@...libre.com>,
        Babu Moger <Babu.Moger@....com>,
        Peter Newman <peternewman@...gle.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        "shameerali.kolothum.thodi@...wei.com" 
        <shameerali.kolothum.thodi@...wei.com>,
        D Scott Phillips OS <scott@...amperecomputing.com>,
        "carl@...amperecomputing.com" <carl@...amperecomputing.com>,
        "lcherian@...vell.com" <lcherian@...vell.com>,
        "bobo.shaobowang@...wei.com" <bobo.shaobowang@...wei.com>,
        "tan.shaopeng@...itsu.com" <tan.shaopeng@...itsu.com>,
        "xingxin.hx@...nanolis.org" <xingxin.hx@...nanolis.org>,
        "baolin.wang@...ux.alibaba.com" <baolin.wang@...ux.alibaba.com>,
        Jamie Iles <quic_jiles@...cinc.com>,
        Xin Hao <xhao@...ux.alibaba.com>,
        "Pitre, Nicolas" <npitre@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        "aricciardi@...libre.com" <aricciardi@...libre.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [RFC PATCH 0/2] Resctrl - rewrite (WIP)

> 38 files changed, 3306 insertions(+), 2 deletions(-)

Lest this be too scary, I'll note the original resctrl code looks like:

$ find arch/x86/kernel/cpu/resctrl  -type f | xargs wc -l
    43 arch/x86/kernel/cpu/resctrl/pseudo_lock_event.h
     4 arch/x86/kernel/cpu/resctrl/Makefile
   996 arch/x86/kernel/cpu/resctrl/core.c
   581 arch/x86/kernel/cpu/resctrl/ctrlmondata.c
   560 arch/x86/kernel/cpu/resctrl/internal.h
   845 arch/x86/kernel/cpu/resctrl/monitor.c
  1600 arch/x86/kernel/cpu/resctrl/pseudo_lock.c
  3733 arch/x86/kernel/cpu/resctrl/rdtgroup.c
  8362 total

I'm haven't included pseudo_lock ... but I have most of the rest, so
I'm confident this will end up as a net reduction in lines of code.

-Tony