linux-kernel - Re: [clocksource] 8901ecc231: stress-ng.lockbus.ops_per

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Message-ID: <138f81df-08e1-f96e-1915-c58b44f96a41@linux.intel.com>
Date:   Thu, 27 May 2021 12:01:23 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     paulmck@...nel.org, Feng Tang <feng.tang@...el.com>
Cc:     kernel test robot <oliver.sang@...el.com>,
        John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Mark Rutland <Mark.Rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Chris Mason <clm@...com>, LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
        zhengjun.xing@...el.com
Subject: Re: [clocksource] 8901ecc231: stress-ng.lockbus.ops_per_sec -9.5%
 regression


>      
>      Nevertheless, it is quite possible that real-world use will result in
>      some situation requiring that high-stress workloads run on hardware
>      not designed to accommodate them, and also requiring that the kernel
>      refrain from marking clocksources unstable.
>      
>      Therefore, provide an out-of-tree patch that reacts to this situation


out-of-tree means it will not be submitted?


I think it would make sense upstream, but perhaps guarded with some option.