24 Jan, 2018

1 commit

  • The ftrace function tracer self tests calls some functions to verify
    the get traced. This relies on them not being inlined. Previously
    this was ensured by putting them into another file, but with LTO
    the compiler can inline across files, which makes the tests fail.

    Mark these functions as noinline and noclone.

    Link: http://lkml.kernel.org/r/20171221233732.31896-1-andi@firstfloor.org

    Signed-off-by: Andi Kleen
    Signed-off-by: Steven Rostedt (VMware)

    Andi Kleen
     

02 Nov, 2017

1 commit

  • 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
     

19 May, 2011

1 commit


24 May, 2008

1 commit

  • With the adding of the configuration changes in the Makefile to prevent
    tracing of functions in the ftrace code, all tracing of all the ftrace
    code has been removed. Unfortunately, one of the selftests, relied on
    a function to be traced. With the new change, the function was no longer
    traced and the test failed.

    This patch separates out the test function into its own file so that
    we can add the "-pg" flag to the compilation of that function and the
    adding of the mcount call to that function.

    Signed-off-by: Steven Rostedt
    Signed-off-by: Ingo Molnar
    Signed-off-by: Thomas Gleixner

    Steven Rostedt