linux-kernel - Re: [PATCH] ACPI: make acpi

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Message-ID: <20100722074750.GA22520@one.firstfloor.org>
Date:	Thu, 22 Jul 2010 09:47:50 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Len Brown <lenb@...nel.org>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	"Yu, Luming" <luming.yu@...el.com>,
	Philip Langdale <philipl@...rt.org>,
	Jeff Garrett <jeff@...rrett.org>,
	Andi Kleen <andi@...stfloor.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"venki@...gle.com" <venki@...gle.com>
Subject: Re: [PATCH] ACPI: make acpi_idle Nehalem-aware

> If a device in the system really does want to prevent use
> of a deep C-state, its Linux driver should register its
> constraints via pm_qos_add_request().

I reviewed the patch and it looks good to me.

I would suggest to have a command line option for this too,
in case someone wants to run an older kernel on a new system not
known by your patch yet.

-Andi

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