linux-kernel - Re: [PATCH] ACPI: reduce log level for message "ACPI: \_PR

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Message-ID: <52E6F9B9.1070900@intel.com>
Date:	Tue, 28 Jan 2014 01:28:41 +0100
From:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
To:	David Rientjes <rientjes@...gle.com>,
	Jiang Liu <jiang.liu@...ux.intel.com>
CC:	Jorg Otte <jrg.otte@...il.com>,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	"Rafael J . Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ACPI: reduce log level for message "ACPI: \_PR_.CPU4:
 failed to get CPU APIC ID"

On 1/28/2014 1:18 AM, David Rientjes wrote:
> On Mon, 27 Jan 2014, Jiang Liu wrote:
>
>> diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
>> index c9311be..c29c2c3 100644
>> --- a/drivers/acpi/acpi_processor.c
>> +++ b/drivers/acpi/acpi_processor.c
>> @@ -261,7 +261,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
>>   
>>   	apic_id = acpi_get_apicid(pr->handle, device_declaration, pr->acpi_id);
>>   	if (apic_id < 0) {
>> -		acpi_handle_err(pr->handle, "failed to get CPU APIC ID.\n");
>> +		acpi_handle_debug(pr->handle, "failed to get CPU APIC ID.\n");
>>   		return -ENODEV;
>>   	}
> Don't we already leave some artifact in the kernel log at boot about apic
> ids that don't get registered?  I'm wondering if we should have this
> warning at all.

It is useful for knowing that there are potentially broken objects in 
the ACPI tables.


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