Messages in this thread | | | Date | Tue, 14 Apr 2009 08:17:28 -0700 | From | Arjan van de Ven <> | Subject | Re: [BISECTED] EEE PC hangs when booting off battery |
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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
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