linux-kernel - Re: [PATCH for -tip] x86, mce: use round_jiffies() instead round_jiffies

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Message-ID: <20090311021405.GE11935@one.firstfloor.org>
Date:	Wed, 11 Mar 2009 03:14:05 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	"H. Peter Anvin" <hpa@...ux.intel.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH for -tip] x86, mce: use round_jiffies() instead round_jiffies_relative()

On Wed, Mar 11, 2009 at 10:14:26AM +0900, KOSAKI Motohiro wrote:
> Impact: saving power _very_ little
> 
> round_jiffies() round up absolute jiffies to full second.
> round_jiffies_relative() round up relative jiffies to full second.
> 
> The "t->expires" is absolute jiffies. Then, round_jiffies() should be
> used instead round_jiffies_relative().

Thanks. I have a rewrite of this code pending. I added it to this.

-Andi
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