This patchset adds support for Vendor Defined Error types in the einj module by exporting a binary blob file in module's debugfs directory. Userspace tools can write OEM Defined Structures into the blob file as part of injecting Vendor defined errors. The first patch refactors available_error_type_show() function to ensure all errors supported by the platform are output through einj module's available_error_type file in debugfs. The second patch adds a write callback for binary blobs created through debugfs_create_blob() API. The third adds the required support i.e. establishing the memory mapping and exporting it through debugfs blob file for Vendor-defined Error types. Changes in v2: - Split the v1 patch, as was recommended, to have a separate patch for changes in debugfs. - Refactored available_error_type_show() function into a separate patch. - Changed file permissions to octal format to remove checkpatch warnings. Changes in v3: - Use BIT macro for generating error masks instead of hex values since ACPI spec uses bit numbers. - Handle the corner case of acpi_os_map_iomem() returning NULL through a local variable to a store the size of OEM defined data structure. Avadhut Naik (3): ACPI: APEI: EINJ: Refactor available_error_type_show() fs: debugfs: Add write functionality to debugfs blobs ACPI: APEI: EINJ: Add support for vendor defined error types drivers/acpi/apei/einj.c | 67 +++++++++++++++++++++++++++------------- fs/debugfs/file.c | 28 ++++++++++++++--- 2 files changed, 69 insertions(+), 26 deletions(-) -- 2.34.1
