17 Aug, 2018

1 commit

  • The Linux kernel adopted the SPDX License format headers to ease license
    compliance management, and uses the C++ '//' style comments for the SPDX
    header tags. Some files in the tracing directory used the C style /* */
    comments for them. To be consistent across all files, replace the /* */
    C style SPDX tags with the C++ // SPDX tags.

    Signed-off-by: Steven Rostedt (VMware)

    Steven Rostedt (VMware)
     

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
     

10 Jul, 2009

1 commit

  • Add stat_release() callback to struct tracer_stat, so a stat tracer
    can release it's entries after the stat file has been read out.

    Signed-off-by: Lai Jiangshan
    Signed-off-by: Li Zefan
    Cc: Lai Jiangshan
    Cc: Steven Rostedt
    Cc: Frederic Weisbecker
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Lai Jiangshan
     

25 Mar, 2009

1 commit

  • Currently, if a trace_stat user wants a handle to some private data,
    the trace_stat infrastructure does not supply a way to do that.

    This patch passes the trace_stat structure to the start function of
    the trace_stat code.

    Signed-off-by: Steven Rostedt

    Steven Rostedt
     

14 Jan, 2009

1 commit

  • Impact: tracing's Api change

    Currently, the stat tracing depends on the events tracing.
    When you switch to a new tracer, the stats files of the previous tracer
    will disappear. But it's more scalable to separate those two engines.
    This way, we can keep the stat files of one or several tracers when we
    want, without bothering of multiple tracer stat files or tracer switching.

    To build/destroys its stats files, a tracer just have to call
    register_stat_tracer/unregister_stat_tracer everytimes it wants to.

    Signed-off-by: Frederic Weisbecker
    Signed-off-by: Steven Rostedt
    Signed-off-by: Ingo Molnar

    Frederic Weisbecker