netdev - Re: [PATCH v5 2/9] task_isolation: vmstat: add vmstat

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Message-ID: <87blfnn3qa.fsf@nanos.tec.linutronix.de>
Date:   Mon, 23 Nov 2020 22:49:17 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Alex Belits <abelits@...vell.com>,
        "nitesh\@redhat.com" <nitesh@...hat.com>,
        "frederic\@kernel.org" <frederic@...nel.org>
Cc:     Prasun Kapoor <pkapoor@...vell.com>,
        "linux-api\@vger.kernel.org" <linux-api@...r.kernel.org>,
        "davem\@davemloft.net" <davem@...emloft.net>,
        "trix\@redhat.com" <trix@...hat.com>,
        "mingo\@kernel.org" <mingo@...nel.org>,
        "catalin.marinas\@arm.com" <catalin.marinas@....com>,
        "rostedt\@goodmis.org" <rostedt@...dmis.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        "peterx\@redhat.com" <peterx@...hat.com>,
        "linux-arch\@vger.kernel.org" <linux-arch@...r.kernel.org>,
        "mtosatti\@redhat.com" <mtosatti@...hat.com>,
        "will\@kernel.org" <will@...nel.org>,
        "peterz\@infradead.org" <peterz@...radead.org>,
        "leon\@sidebranch.com" <leon@...ebranch.com>,
        "linux-arm-kernel\@lists.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "pauld\@redhat.com" <pauld@...hat.com>,
        "netdev\@vger.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v5 2/9] task_isolation: vmstat: add vmstat_idle function

On Mon, Nov 23 2020 at 17:56, Alex Belits wrote:
> This function checks to see if a vmstat worker is not running,
> and the vmstat diffs don't require an update.  The function is
> called from the task-isolation code to see if we need to
> actually do some work to quiet vmstat.

A changelog has to explain _WHY_ this change is necessary and not _WHAT_
the patch is doing.

Thanks,

        tglx