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
     

31 Jul, 2012

1 commit

  • 8d4382881   fault-injection: notifier error injection ... Browse Code »

    This patchset provides kernel modules that can be used to test the error
    handling of notifier call chain failures by injecting artifical errors to
    the following notifier chain callbacks.

    * CPU notifier
    * PM notifier
    * memory hotplug notifier
    * powerpc pSeries reconfig notifier

    Example: Inject CPU offline error (-1 == -EPERM)

    # cd /sys/kernel/debug/notifier-error-inject/cpu
    # echo -1 > actions/CPU_DOWN_PREPARE/error
    # echo 0 > /sys/devices/system/cpu/cpu1/online
    bash: echo: write error: Operation not permitted

    The patchset also adds cpu and memory hotplug tests to
    tools/testing/selftests These tests first do simple online and offline
    test and then do fault injection tests if notifier error injection
    module is available.

    This patch:

    The notifier error injection provides the ability to inject artifical
    errors to specified notifier chain callbacks. It is useful to test the
    error handling of notifier call chain failures.

    This adds common basic functions to define which type of events can be
    fail and to initialize the debugfs interface to control what error code
    should be returned and which event should be failed.

    Signed-off-by: Akinobu Mita
    Cc: Pavel Machek
    Cc: "Rafael J. Wysocki"
    Cc: Greg KH
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Michael Ellerman
    Cc: Dave Jones
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita