Fwd: Delivery Status Notification (Failure)

From	gengdongjiu <gengdj.1984@gmail.com>
Newsgroups	linux.kernel
Subject	Fwd: Delivery Status Notification (Failure)
Date	2016-09-28 16:00 +0200
Message-ID	<smnyV-7th-7@gated-at.bofh.it> (permalink)
References	<smnyV-7th-9@gated-at.bofh.it> <smnyV-7th-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,
  In the kernel 4.1, I am confused for the
runnable_avg_sum/avg_period/running_avg_sum,
for example below code.
Does the task runnable_avg_sum includes running_avg_sum? Does avg_period
includes the task runnable_avg_sum and the task sleep time? thank you.

static inline void __update_task_entity_contrib(struct sched_entity *se)
{
        u32 contrib;

        /* avoid overflowing a 32-bit type w/ SCHED_LOAD_SCALE */
        contrib = se->avg.runnable_avg_sum * scale_load_down(se->load.
weight);
        contrib /= (se->avg.avg_period + 1);
        se->avg.load_avg_contrib = scale_load(contrib);
}


static inline void __update_task_entity_utilization(struct sched_entity *se)
{
        u32 contrib;

        /* avoid overflowing a 32-bit type w/ SCHED_LOAD_SCALE */
        contrib = se->avg.running_avg_sum * scale_load_down(SCHED_LOAD_
SCALE);
        contrib /= (se->avg.avg_period + 1);
        se->avg.utilization_avg_contrib = scale_load(contrib);
}

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Fwd: Delivery Status Notification (Failure) gengdongjiu <gengdj.1984@gmail.com> - 2016-09-28 16:00 +0200

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