linux-kernel - Re: [patch 05/15] sched: add a timer to handle CFS bandwidth refresh

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Message-ID: <4DC8E780.6020306@jp.fujitsu.com>
Date:	Tue, 10 May 2011 16:21:36 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	Paul Turner <pjt@...gle.com>
CC:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, Pavel Emelyanov <xemul@...nvz.org>
Subject: Re: [patch 05/15] sched: add a timer to handle CFS bandwidth refresh

(2011/05/03 18:28), Paul Turner wrote:
> @@ -250,6 +253,9 @@ struct cfs_bandwidth {
>  	ktime_t period;
>  	u64 quota;
>  	s64 hierarchal_quota;
> +
> +	int idle;
> +	struct hrtimer period_timer;
>  #endif
>  };
>  

"idle" is not used yet.  How about adding it in later patch?
Plus, comment explaining how it is used would be appreciated.

>  static void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b)
>  {
>  	raw_spin_lock_init(&cfs_b->lock);
>  	cfs_b->quota = RUNTIME_INF;
>  	cfs_b->period = ns_to_ktime(default_cfs_period());
> +
> +	hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
> +	cfs_b->period_timer.function = sched_cfs_period_timer;
> +
>  }

Nit: blank line?

Reviewed-by: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>


Thanks,
H.Seto

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