linux-kernel - Re: [PATCH -tip-rcu] Make rcutorture more vicious: make quiescent rcutorture less power-hungry

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Message-ID: <20080624113710.GB21890@elte.hu>
Date:	Tue, 24 Jun 2008 13:37:10 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, josh@...edesktop.org,
	dvhltc@...ibm.com, niv@...ibm.com, dino@...ibm.com,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	vegard.nossum@...il.com, adobriyan@...il.com, oleg@...sign.ru,
	bunk@...nel.org, rjw@...k.pl
Subject: Re: [PATCH -tip-rcu] Make rcutorture more vicious: make quiescent
	rcutorture less power-hungry


* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> > could you also make it use round_jiffies_relative() to make the 
> > power impact even less..... (by coalescing various "once a second" 
> > timers like this)
> 
> Good point!!!  As follows, on top of the previous one.
> 
> This patch aligns the rcutorture wakeup times to align with all other 
> multiple-of-a-second wakeups to further decrease power consumption.
> 
> Suggested-by: Arjan van de Ven <arjan@...radead.org>
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

applied to tip/core/rcu - thanks Paul.

	Ingo
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