linux-kernel - Re: [PATCH v2] Add suspend/resume for HPET

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Date:	Sun, 1 Apr 2007 00:01:48 +0800
From:	"Jeff Chua" <jeff.chua.linux@...il.com>
To:	tglx@...utronix.de
Cc:	"Maxim Levitsky" <maximlevitsky@...il.com>,
	"Sergei Shtylyov" <sshtylyov@...mvista.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Ingo Molnar" <mingo@...e.hu>, "Adrian Bunk" <bunk@...sta.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, pavel@...e.cz,
	linux-pm@...ts.osdl.org, gregkh@...e.de,
	linux-pci@...ey.karlin.mff.cuni.cz,
	"Jens Axboe" <jens.axboe@...cle.com>,
	"Len Brown" <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	jgarzik@...ox.com, linux-ide@...r.kernel.org,
	"Michael S. Tsirkin" <mst@...lanox.co.il>
Subject: Re: [PATCH v2] Add suspend/resume for HPET

On 3/31/07, Thomas Gleixner <tglx@...utronix.de> wrote:

> Jeff still seems to have problems with CONFIG_NO_HZ=n and it might be
> caused by time keeping / tick management resume happening before the
> HPET resume.

me>Confirmed that suspend/resume disk/ram works on X60s with
me>CONFIG_HPET_TIMER=y and CONFIG_NO_HZ unset.
me> But suspend to disk still hang with CONFIG_NO_HZ unset.

Oops, sorry. Typo (as a result copy/paste using mouse)
    ... I actually meant CONFIG_NO_HZ "set".

Just to be clear, suspend to disk still hang with CONFIG_NO_HZ=y. It
hang just before you see the percent saving %.

Jeff.
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