linux-kernel - Re: [cpufreq] 06c4d00466: will-it-scale.per_process

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Message-ID: <CAHp75VeeKZLeZ8E3Py7LECN54SPFHaRgkxrMzBYQWXM8x+4JhA@mail.gmail.com>
Date:   Tue, 24 Mar 2020 12:24:54 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Gross <mgross@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        linux-edac@...r.kernel.org,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-hwmon@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        Takashi Iwai <tiwai@...e.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto <linux-crypto@...r.kernel.org>, lkp@...ts.01.org
Subject: Re: [cpufreq] 06c4d00466: will-it-scale.per_process_ops -53.4% regression

On Tue, Mar 24, 2020 at 8:02 AM kernel test robot <rong.a.chen@...el.com> wrote:
>
> Greeting,
>
> FYI, we noticed a -53.4% regression of will-it-scale.per_process_ops due to commit:

> commit: 06c4d00466eb374841bc84c39af19b3161ff6917 ("[patch 09/22] cpufreq: Convert to new X86 CPU match macros")
> url: https://github.com/0day-ci/linux/commits/Thomas-Gleixner/x86-devicetable-Move-x86-specific-macro-out-of-generic-code/20200321-031729
> base: https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git linux-next
>
> in testcase: will-it-scale
> on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 8G memory
> with following parameters:


drivers/cpufreq/speedstep-centrino.c change missed the terminator,
perhaps it's a culprit, because I don't believe removing dups and
reordering lines may affect this.
Can you restore terminator there and re-test?

-- 
With Best Regards,
Andy Shevchenko