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From: Vincent Guittot <vincent.guittot@linaro.org>
Date: Fri, 3 Oct 2014 16:51:01 +0200
Message-ID: <CAKfTPtDvX=JFf6OBBzTVbo6C76p243za+9CkL-ofSOvHQS5-mQ@mail.gmail.com>
Subject: Re: [PATCH v6 3/6] sched: add utilization_avg_contrib
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Preeti U Murthy <preeti@linux.vnet.ibm.com>,
        Russell King - ARM Linux <linux@arm.linux.org.uk>,
        LAK <linux-arm-kernel@lists.infradead.org>,
        Rik van Riel <riel@redhat.com>,
        Morten Rasmussen <Morten.Rasmussen@arm.com>,
        Mike Galbraith <efault@gmx.de>,
        Nicolas Pitre <nicolas.pitre@linaro.org>,
        "linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Paul Turner <pjt@google.com>, Benjamin Segall <bsegall@google.com>
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On 3 October 2014 16:36, Peter Zijlstra <peterz@infradead.org> wrote:
>
>> +      * utilization_load_avg is the sum of the average running time of the
>> +      * sched_entities on the rq.
>>        */
>
> So I think there was some talk about a blocked_utilization thingy, which
> would track the avg running time of the tasks currently asleep, right?
>

yes. Do you mean that we should anticipate and rename
utilization_load_avg into utilization_runnable_avg to make space for a
utilization_blocked_avg that could be added in future ?

>> +     unsigned long runnable_load_avg, blocked_load_avg, utilization_load_avg;
>>       atomic64_t decay_counter;
>>       u64 last_decay;
>>       atomic_long_t removed_load;
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