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Message-ID: <1454356843.7627.187.camel@edumazet-glaptop2.roam.corp.google.com>
Subject: Re: [PATCH 4/4] sched,time: only call
 account_{user,sys,guest,idle}_time once a jiffy
From: Eric Dumazet <eric.dumazet@gmail.com>
To: riel@redhat.com
Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de, peterz@infradead.org,
        fweisbec@gmail.com, clark@redhat.com, luto@amacapital.net,
        mingo@kernel.org
Date: Mon, 01 Feb 2016 12:00:43 -0800
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	 <1454354466-31309-5-git-send-email-riel@redhat.com>
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On Mon, 2016-02-01 at 14:21 -0500, riel@redhat.com wrote:
> From: Rik van Riel <riel@redhat.com>
> 

>  #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
> +static bool vtime_jiffies_changed(struct task_struct *tsk, unsigned long now)
> +{
> +	if (tsk->vtime_jiffies == jiffies)
> +		return false;
> +
> +	tsk->vtime_jiffies = jiffies;
> +	return true;
> +}

I am guessing you intended to use 'now' instead of jiffies ?