From: Arjan van de Ven <arjan@infradead.org>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Alan Jenkins <alan-jenkins@tuffmail.co.uk>,
linux-acpi@vger.kernel.org,
linux-kernel <linux-kernel@vger.kernel.org>,
Kernel Testers List <kernel-testers@vger.kernel.org>,
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Subject: Re: [BISECTED] EEE PC hangs when booting off battery
Date: Tue, 14 Apr 2009 08:17:28 -0700 [thread overview]
Message-ID: <20090414081728.10de978a@infradead.org> (raw)
In-Reply-To: <200904140859.02188.bjorn.helgaas@hp.com>
On Tue, 14 Apr 2009 08:59:01 -0600
Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
> I can't help with the real problem of why the asynchronous battery
> init causes the hang.
that got fixed already for the module case.
>
> But I do object to the magic makefile ordering change in that commit.
> Nobody reading the makefile can tell why battery is down at the end,
> and moving it apparently slows down boot significantly.
for all cases I've seen it actually speeds it up, because the battery
now runs concurrently with the disk probe.
> So the
> ordering change just feels like a band-aid that covers up a place
> where ACPI could be improved.
the reason for the move is that both the battery and other pieces take
the big acpi lock; which defeats the parallelism. So the battery needs
to happen at the end instead.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-04-14 15:17 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-11 9:41 Regression: EEE PC hangs when booting off battery Alan Jenkins
[not found] ` <49E065CF.6040408-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-11 18:07 ` Tzy-Jye Daniel Lin
[not found] ` <66dc75180904111107q645fbb77i3cf927ffab7a7ef0-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-04-12 9:00 ` Alan Jenkins
[not found] ` <49E1ADAE.2030103-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-12 13:11 ` [BISECTED] " Alan Jenkins
[not found] ` <49E1E89D.7040502-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-13 19:15 ` Bjorn Helgaas
[not found] ` <200904131315.55519.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
2009-04-13 19:57 ` Alan Jenkins
2009-04-13 22:28 ` Bjorn Helgaas
2009-04-14 8:06 ` Alan Jenkins
2009-04-14 9:26 ` Alan Jenkins
2009-04-14 14:59 ` Bjorn Helgaas
2009-04-14 15:17 ` Arjan van de Ven [this message]
2009-04-14 15:37 ` Alan Jenkins
[not found] ` <20090414081728.10de978a-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-04-14 15:48 ` Bjorn Helgaas
[not found] ` <200904140948.37633.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
2009-04-14 15:55 ` Moore, Robert
[not found] ` <4911F71203A09E4D9981D27F9D8308581D3722EB-osO9UTpF0URQxe9IK+vIArfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2009-04-14 16:56 ` Bjorn Helgaas
2009-04-14 17:22 ` Moore, Robert
[not found] ` <4911F71203A09E4D9981D27F9D8308581D372489-osO9UTpF0URQxe9IK+vIArfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2009-04-14 17:28 ` Alan Jenkins
[not found] ` <200904141056.14159.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
2009-04-15 15:38 ` Len Brown
2009-04-15 14:32 ` [FIXED] " Alan Jenkins
2009-04-22 12:17 ` Alan Jenkins
2009-04-26 11:34 ` Alan Jenkins
[not found] ` <49F446AE.6070607-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-28 9:19 ` [PATCH] [RFC] " Alan Jenkins
[not found] ` <49F6CA0E.5040101-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-28 9:58 ` Johannes Berg
[not found] ` <1240912688.28835.10.camel-YfaajirXv2244ywRPIzf9A@public.gmane.org>
2009-04-28 10:27 ` Alan Jenkins
[not found] ` <49F6DA14.7030608-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-28 10:35 ` Johannes Berg
2009-04-29 11:14 ` Alan Jenkins
[not found] ` <49F83699.3000307-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
2009-04-29 11:20 ` Johannes Berg
2009-05-15 21:48 ` Rafael J. Wysocki
[not found] ` <200905152348.56449.rjw-KKrjLPT3xs0@public.gmane.org>
2009-05-16 8:39 ` Alan Jenkins
2009-04-11 19:40 ` Regression: " Kristoffer Ericson
[not found] ` <20090411214045.7bdd497f.kristoffer.ericson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2009-04-12 9:22 ` Alan Jenkins
2009-04-15 15:49 ` archlinux 2.6.28 ac oops (was Re: Regression: EEE PC hangs when booting off battery) Len Brown
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