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

Pavel Machek
2010-01-06T07:14:45Z

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@intel.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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