linux-kernel - Re: [patch] sched: skip updating rq's next

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Date:	Thu, 23 Aug 2007 12:38:46 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
Cc:	nickpiggin@...oo.com.au, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [patch] sched: skip updating  rq's next_balance under null SD


* Siddha, Suresh B <suresh.b.siddha@...el.com> wrote:

> Was playing with sched_smt_power_savings/sched_mc_power_savings and 
> found out that while the scheduler domains are reconstructed when 
> sysfs settings change, rebalance_domains() can get triggered with null 
> domain on other cpus, which is setting next_balance to jiffies + 
> 60*HZ. Resulting in no idle/busy balancing for 60 seconds.
> 
> Fix this.

thanks, applied.

	Ingo
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