* Re: Regression in 2.6.27-rc2 in acpi_processor_init()
2008-08-08 21:02 ` Regression in 2.6.27-rc2 in acpi_processor_init() Rafael J. Wysocki
@ 2008-08-08 21:06 ` Dave Jones
2008-08-10 3:34 ` Zhao Yakui
1 sibling, 0 replies; 4+ messages in thread
From: Dave Jones @ 2008-08-08 21:06 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Langsdorf, Mark, lkml, ACPI Devel Maling List, Andi Kleen,
Andrew Morton, Thomas Renninger
On Fri, Aug 08, 2008 at 11:02:10PM +0200, Rafael J. Wysocki wrote:
> [Adding CCs]
>
> On Friday, 8 of August 2008, Langsdorf, Mark wrote:
> > I got a regression when updated from 2.6.27-rc1 ro
> > 2.6.27-rc2. The noticeable symptom is the powernow-k8
> > driver stopped working because the call to
> > acpi_processor_register_performance() is returning
> > -EINVAL.
> >
> > Digging into the code a bit more, that's occurring
> > because acpi_processor_ppc_status is not set.
> > That should be set in acpi_processor_init(), but
> > that function is failing to register the ACPI
> > processor driver.
> >
> > I've dug through the code and can't see why
> > that call would fail. It doesn't look like there
> > were any changes between 2.6.27-rc1 and 2.6.27-rc2,
> > but I may have missed something.
> >
> > Any advice or suggestions in debugging this
> > appreciated.
a1531acd43310a7e4571d52e8846640667f4c74b perhaps related ?
Dave
--
http://www.codemonkey.org.uk
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Regression in 2.6.27-rc2 in acpi_processor_init()
2008-08-08 21:02 ` Regression in 2.6.27-rc2 in acpi_processor_init() Rafael J. Wysocki
2008-08-08 21:06 ` Dave Jones
@ 2008-08-10 3:34 ` Zhao Yakui
2008-08-11 16:54 ` Langsdorf, Mark
1 sibling, 1 reply; 4+ messages in thread
From: Zhao Yakui @ 2008-08-10 3:34 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Langsdorf, Mark, lkml, ACPI Devel Maling List, Andi Kleen,
Andrew Morton
On Fri, 2008-08-08 at 23:02 +0200, Rafael J. Wysocki wrote:
> [Adding CCs]
>
Hi, Mark
Will you please attach the output of acpidump on bug 11287?
Of course it will be great if you can enable CONFIG_ACPI_DEBUG and
CONFIG_CPUFREQ_DEBUG in kernel configuration and boot the system with
the option of "cpufreq.debug=7 acpi.debug_layer=0x01010000
acpi.debug_level=0x17".
After the system is booted, please attach the output of dmesg.
Please do the above test on both kernel 2.6.27-rc1 and 2.6.27-rc2.
Thanks.
> On Friday, 8 of August 2008, Langsdorf, Mark wrote:
> > I got a regression when updated from 2.6.27-rc1 ro
> > 2.6.27-rc2. The noticeable symptom is the powernow-k8
> > driver stopped working because the call to
> > acpi_processor_register_performance() is returning
> > -EINVAL.
> >
> > Digging into the code a bit more, that's occurring
> > because acpi_processor_ppc_status is not set.
> > That should be set in acpi_processor_init(), but
> > that function is failing to register the ACPI
> > processor driver.
> >
> > I've dug through the code and can't see why
> > that call would fail. It doesn't look like there
> > were any changes between 2.6.27-rc1 and 2.6.27-rc2,
> > but I may have missed something.
> >
> > Any advice or suggestions in debugging this
> > appreciated.
> >
> > -Mark Langsdorf
> > Operating System Research Center
> > AMD
>
>
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread