Eric Lee / smarc-fsl-linux-kernel

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

01 Jun, 2015

1 commit

  • 7d8241095   virtio: add explicit big-endian support to memory accessors ... Browse Code »

    The current memory accessors logic is:
    - little endian if little_endian
    - native endian (i.e. no byteswap) if !little_endian

    If we want to fully support cross-endian vhost, we also need to be
    able to convert to big endian.

    Instead of changing the little_endian argument to some 3-value enum, this
    patch changes the logic to:
    - little endian if little_endian
    - big endian if !little_endian

    The native endian case is handled by all users with a trivial helper. This
    patch doesn't change any functionality, nor it does add overhead.

    Signed-off-by: Greg Kurz

    Signed-off-by: Michael S. Tsirkin
    Reviewed-by: Cornelia Huck
    Reviewed-by: David Gibson

    Greg Kurz
     

09 Dec, 2014

1 commit

  • eef960a04   virtio: memory access APIs ... Browse Code »

    virtio 1.0 makes all memory structures LE, so
    we need APIs to conditionally do a byteswap on BE
    architectures.

    To make it easier to check code statically,
    add virtio specific types for multi-byte integers
    in memory.

    Add low level wrappers that do a byteswap conditionally, these will be
    useful e.g. for vhost. Add high level wrappers that
    query device endian-ness and act accordingly.

    Signed-off-by: Michael S. Tsirkin
    Reviewed-by: Cornelia Huck

    Michael S. Tsirkin