linux-kernel - Re: [PATCH 1/2] sched: entity load-tracking re-work

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Message-Id: <3E8017B2-836A-466A-92F1-E625F49E554D@antoniou-consulting.com>
Date:	Tue, 28 Feb 2012 19:52:56 +0200
From:	Pantelis Antoniou <panto@...oniou-consulting.com>
To:	Morten Rasmussen <Morten.Rasmussen@....com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Paul Turner <pjt@...gle.com>
Subject: Re: [PATCH 1/2] sched: entity load-tracking re-work - Fix for ARM


On Feb 28, 2012, at 7:45 PM, Morten Rasmussen wrote:

> On Wed, Feb 29, 2012 at 10:37:38AM +0000, Pantelis Antoniou wrote:
>> @@ -1110,9 +1110,9 @@ static inline void __update_group_entity_contrib(struct sched_entity *se)
>> 	struct cfs_rq *cfs_rq = group_cfs_rq(se);
>> 	struct task_group *tg = cfs_rq->tg;
>> 	int runnable_avg;
>> +	u64 contrib;
>> 
>> -	se->avg.load_avg_contrib = (cfs_rq->tg_load_contrib * tg->shares);
>> -	se->avg.load_avg_contrib /= atomic64_read(&tg->load_avg) + 1;
> 
> It seems that contrib is never assigned?
> Fix:
> +	contrib = (cfs_rq->tg_load_contrib * tg->shares);
> 
>> +	se->avg.load_avg_contrib = div_u64(contrib, atomic64_read(&tg->load_avg) + 1);
> 
> Regards,
> Morten
> 

Hmm, yeah,

2 line patch and brown paper bag time.

Thanks

-- Pantelis--
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