linux-kernel - Re: [PATCH 5/5] ACPI, APEI, Document for APEI

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Message-ID: <20100106071431.GB1494@ucw.cz>
Date:	Wed, 6 Jan 2010 08:14:31 +0100
From:	Pavel Machek <pavel@....cz>
To:	Huang Ying <ying.huang@...el.com>
Cc:	lenb@...nel.org, ak@...ux.intel.com, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 5/5] ACPI, APEI, Document for APEI

On Mon 2009-12-28 14:12:24, Huang Ying wrote:
> Add document for APEI, including kernel parameters and EINJ debug file
> sytem interface.
> 
> Signed-off-by: Huang Ying <ying.huang@...el.com>
> ---
>  Documentation/acpi/apei/einj.txt    |   49 +++++++++++++++++++++++++++++++++++
>  Documentation/kernel-parameters.txt |    5 +++
>  2 files changed, 54 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/acpi/apei/einj.txt
> 
> diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
> new file mode 100644
> index 0000000..438ef33
> --- /dev/null
> +++ b/Documentation/acpi/apei/einj.txt
> @@ -0,0 +1,49 @@
> +			APEI Error INJection
> +			~~~~~~~~~~~~~~~~~~~~
> +
> +EINJ provides a hardware error injection mechanism, it is very useful
> +for debugging and testing of other APEI and RAS features.
> +
> +To use EINJ, make the following is enabled in your kernel
> +configuration:
> +
> +CONFIG_DEBUG_FS
> +CONFIG_ACPI_APEI
> +CONFIG_ACPI_APEI_EINJ
> +
> +The user interface of EINJ is in debug file system, under the
> +directory apei/einj. The following files are provided.
> +
> +- available_error_type
> +  Read this file will return the error injection capability of the
> +  platform, that is, which error types are supported. The error type
> +  definition is as follow, the left field is the error type value, the
> +  right field is error description.
> +
> +    0x00000001	Processor Correctable
> +    0x00000002	Processor Uncorrectable non-fatal
> +    0x00000004	Processor Uncorrectable fatal
> +    0x00000008  Memory Correctable
> +    0x00000010  Memory Uncorrectable non-fatal
> +    0x00000020  Memory Uncorrectable fatal
> +    0x00000040	PCI Express Correctable
> +    0x00000080	PCI Express Uncorrectable fatal
> +    0x00000100	PCI Express Uncorrectable non-fatal
> +    0x00000200	Platform Correctable
> +    0x00000400	Platform Uncorrectable non-fatal
> +    0x00000800	Platform Uncorrectable fatal
> +
> +  The format of file contents are as above, except there are only the
> +  available error type lines.

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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