Eric Lee / smarc-fsl-linux-kernel

10 Aug, 2020

1 commit

  • faabed295   kbuild: introduce hostprogs-always-y and userprogs-always-y ... Browse Code »

    To build host programs, you need to add the program names to 'hostprogs'
    to use the necessary build rule, but it is not enough to build them
    because there is no dependency.

    There are two types of host programs: built as the prerequisite of
    another (e.g. gen_crc32table in lib/Makefile), or always built when
    Kbuild visits the Makefile (e.g. genksyms in scripts/genksyms/Makefile).

    The latter is typical in Makefiles under scripts/, which contains host
    programs globally used during the kernel build. To build them, you need
    to add them to both 'hostprogs' and 'always-y'.

    This commit adds hostprogs-always-y as a shorthand.

    The same applies to user programs. net/bpfilter/Makefile builds
    bpfilter_umh on demand, hence always-y is unneeded. In contrast,
    programs under samples/ are added to both 'userprogs' and 'always-y'
    so they are always built when Kbuild visits the Makefiles.

    userprogs-always-y works as a shorthand.

    Signed-off-by: Masahiro Yamada
    Acked-by: Miguel Ojeda

    Masahiro Yamada
     

16 Jun, 2020

1 commit

  • f2baaff27   samples: mei: Replace zero-length array with flexible-array ... Browse Code »

    There is a regular need in the kernel to provide a way to declare having a
    dynamically sized set of trailing elements in a structure. Kernel code should
    always use “flexible array members”[1] for these cases. The older style of
    one-element or zero-length arrays should no longer be used[2].

    [1] https://en.wikipedia.org/wiki/Flexible_array_member
    [2] https://github.com/KSPP/linux/issues/21

    Signed-off-by: Gustavo A. R. Silva

    Gustavo A. R. Silva
     

17 May, 2020

1 commit

  • c4c10996b   samples: mei: build sample program for target architecture ... Browse Code »

    This userspace program includes UAPI headers exported to usr/include/.
    'make headers' always works for the target architecture (i.e. the same
    architecture as the kernel), so the sample program should be built for
    the target as well. Kbuild now supports 'userprogs' for that.

    I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
    $(CC) may not provide libc.

    Signed-off-by: Masahiro Yamada
    Acked-by: Sam Ravnborg

    Masahiro Yamada
     

25 Mar, 2020

1 commit

04 Feb, 2020

1 commit

  • 5f2fb52fa   kbuild: rename hostprogs-y/always to hostprogs/always-y ... Browse Code »

    In old days, the "host-progs" syntax was used for specifying host
    programs. It was renamed to the current "hostprogs-y" in 2004.

    It is typically useful in scripts/Makefile because it allows Kbuild to
    selectively compile host programs based on the kernel configuration.

    This commit renames like follows:

    always -> always-y
    hostprogs-y -> hostprogs

    So, scripts/Makefile will look like this:

    always-$(CONFIG_BUILD_BIN2C) += ...
    always-$(CONFIG_KALLSYMS) += ...
    ...
    hostprogs := $(always-y) $(always-m)

    I think this makes more sense because a host program is always a host
    program, irrespective of the kernel configuration. We want to specify
    which ones to compile by CONFIG options, so always-y will be handier.

    The "always", "hostprogs-y", "hostprogs-m" will be kept for backward
    compatibility for a while.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     

22 Oct, 2019

1 commit

  • 6859eba4f   samples: mei: use hostprogs kbuild constructs ... Browse Code »

    Use hostprogs kbuild constructs to compile
    mei sample program mei-amt-version

    Add CONFIG_SAMPLE_INTEL_MEI option to enable/disable
    the feature.

    Signed-off-by: Tomas Winkler
    Link: https://lore.kernel.org/r/20191010132710.4075-1-tomas.winkler@intel.com
    Signed-off-by: Greg Kroah-Hartman

    Tomas Winkler
     

30 Jan, 2019

1 commit

03 Oct, 2018

1 commit

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
     

26 Apr, 2017

1 commit

24 Sep, 2016

1 commit

  • 986b891ad   samples: move misc-devices/mei example code from Documentation ... Browse Code »

    Move misc-devices/mei examples to samples/mei and remove it from
    Documentation Makefile. Delete misc-devices/Makefile.

    Create a new Makefile to build samples/mei. It can be built from top
    level directory or from mei directory:

    Run make -C samples/mei or cd samples/mei; make

    Acked-by: Jonathan Corbet
    Acked-by: Greg Kroah-Hartman
    Acked-by: Tomas Winkler
    Signed-off-by: Shuah Khan

    Shuah Khan