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
     

07 Jan, 2015

1 commit

  • 83fe27ea5   rcu: Make SRCU optional by using CONFIG_SRCU ... Browse Code »

    SRCU is not necessary to be compiled by default in all cases. For tinification
    efforts not compiling SRCU unless necessary is desirable.

    The current patch tries to make compiling SRCU optional by introducing a new
    Kconfig option CONFIG_SRCU which is selected when any of the components making
    use of SRCU are selected.

    If we do not select CONFIG_SRCU, srcu.o will not be compiled at all.

    text data bss dec hex filename
    2007 0 0 2007 7d7 kernel/rcu/srcu.o

    Size of arch/powerpc/boot/zImage changes from

    text data bss dec hex filename
    831552 64180 23944 919676 e087c arch/powerpc/boot/zImage : before
    829504 64180 23952 917636 e0084 arch/powerpc/boot/zImage : after

    so the savings are about ~2000 bytes.

    Signed-off-by: Pranith Kumar
    CC: Paul E. McKenney
    CC: Josh Triplett
    CC: Lai Jiangshan
    Signed-off-by: Paul E. McKenney
    [ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]

    Pranith Kumar
     

18 Jan, 2013

1 commit

  • 8081c1dc0   arch/tile/kvm: remove depends on CONFIG_EXPERIMENTAL ... Browse Code »

    The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
    while now and is almost always enabled by default. As agreed during the
    Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

    CC: Avi Kivity
    CC: Marcelo Tosatti
    Acked-by: Chris Metcalf
    Cc: Greg Kroah-Hartman
    Signed-off-by: Kees Cook
    Signed-off-by: Greg Kroah-Hartman

    Kees Cook
     

23 Jul, 2011

1 commit

  • e72542191   virtio: expose for non-virtualization users too ... Browse Code »

    virtio has been so far used only in the context of virtualization,
    and the virtio Kconfig was sourced directly by the relevant arch
    Kconfigs when VIRTUALIZATION was selected.

    Now that we start using virtio for inter-processor communications,
    we need to source the virtio Kconfig outside of the virtualization
    scope too.

    Moreover, some architectures might use virtio for both virtualization
    and inter-processor communications, so directly sourcing virtio
    might yield unexpected results due to conflicting selections.

    The simple solution offered by this patch is to always source virtio's
    Kconfig in drivers/Kconfig, and remove it from the appropriate arch
    Kconfigs. Additionally, a virtio menu entry has been added so virtio
    drivers don't show up in the general drivers menu.

    This way anyone can use virtio, though it's arguably less accessible
    (and neat!) for virtualization users now.

    Note: some architectures (mips and sh) seem to have a VIRTUALIZATION
    menu merely for sourcing virtio's Kconfig, so that menu is removed too.

    Signed-off-by: Ohad Ben-Cohen
    Signed-off-by: Rusty Russell

    Ohad Ben-Cohen
     

16 Oct, 2010

1 commit