On Tue, 2007-10-09 at 23:43 -0400, Len Brown wrote:
> On Sunday 07 October 2007 23:35, Zhao Yakui wrote:
> > Subject: ACPI: avoid printing the info that processor device is not present
> > From: Zhao Yakui <yakui.zhao@xxxxxxxxx>
> >
> > Four processors are defined in the DSDT table, which means that quad-core cpu
> > is supported. But dual-core cpu is installed on the system. In the
> > initialization OS will check whether the defined processor exists. If it
> > doesn't exist, it will print the info that processor device is not present.
> > The above error message has no effect on the system but it will mislead us.
> > So it is unnecessary to print the error message when disabling acpi debug.
>
> SuSE ships with ACPI_DEBUG enabled by default.
> Can we get smarter about this -- say by checking against
> the processors that we expect to be present?
The error info depends on the two following conditions :
1. ACPI_DEBUG is enabled
2. boot option of acpi.debug_level=0x10
If Only ACPI_DEBUG is enabled, the dmesg won't print the error info.
> thanks,
> -Len
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=8630
> >
> > Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
> > ---
> > drivers/acpi/processor_core.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > Index: linux-2.6.23-rc7/drivers/acpi/processor_core.c
> > ===================================================================
> > --- linux-2.6.23-rc7.orig/drivers/acpi/processor_core.c
> > +++ linux-2.6.23-rc7/drivers/acpi/processor_core.c
> > @@ -813,7 +813,9 @@ static int is_processor_present(acpi_han
> >
> > status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
> > if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) {
> > - ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
> > + ACPI_DEBUG_PRINT((ACPI_DB_INFO,
> > + "%s :Processor Device is not present",
> > + acpi_format_exception(status)));
> > return 0;
> > }
> > return 1;
> >
> -
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