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
     

06 Jun, 2017

1 commit

  • 6f0fa58e4   kbuild: simplify silent build (-s) detection ... Browse Code »

    This allows to detect -s (--silent) option without checking GNU Make
    version.

    As commit e36aaea28972 ("kbuild: Fix silent builds with make-4")
    pointed out, GNU Make 4.x changed the way/order it presents the
    command line options into MAKEFLAGS.

    In Make 3.8x, 's' is always the first in a group of short options.
    The group may be prefixed with '-' in some cases.

    In Make 4.x, 's' is always the last in a group of short options.

    As commit e6ac89fabd03 ("kbuild: Correctly deal with make options
    which contain an 's'") addressed, we also need to deal with long
    options that contain 's', like --warn-undefined-variables.

    Test cases:

    [1] command line input: make --silent
    -> MAKEFLAGS for Make 3.8x: s
    -> MAKEFLAGS for Make 4.x : s

    [2] command line input: make -srR
    -> MAKEFLAGS for Make 3.8x: sRr
    -> MAKEFLAGS for Make 4.x : rRs

    [3] command line input: make -s -rR --warn-undefined-variables
    -> MAKEFLAGS for Make 3.8x: --warn-undefined-variables -sRr
    -> MAKEFLAGS for Make 4.x : rRs --warn-undefined-variables

    My idea to cater to all the cases more easily is to filter out long
    options (--%), then search 's' with $(findstring ...). This way will
    be more future-proof even if future versions of Make put 's' in the
    middle of the group.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     

27 Jan, 2017

1 commit

  • e572d0887   tools build: Add tools tree support for 'make -s' ... Browse Code »

    When doing a kernel build with 'make -s', everything is silenced except
    the objtool build. That's because the tools tree support for silent
    builds is some combination of missing and broken.

    Three changes are needed to fix it:

    - Makefile: propagate '-s' to the sub-make's MAKEFLAGS variable so the
    tools Makefiles can see it.

    - tools/scripts/Makefile.include: fix the tools Makefiles' ability to
    recognize '-s'. The MAKE_VERSION and MAKEFLAGS checks are copied from
    the top-level Makefile. This silences the "DESCEND objtool" message.

    - tools/build/Makefile.build: add support to the tools Build files for
    recognizing '-s'. Again the MAKE_VERSION and MAKEFLAGS checks are
    copied from the top-level Makefile. This silences all the object
    compile/link messages.

    Reported-and-Tested-by: Peter Zijlstra
    Signed-off-by: Josh Poimboeuf
    Cc: Jiri Olsa
    Cc: Michal Marek
    Link: http://lkml.kernel.org/r/e8967562ef640c3ae9a76da4ae0f4e47df737c34.1484799200.git.jpoimboe@redhat.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Josh Poimboeuf
     

06 Oct, 2016

1 commit

  • f61bdc330   tools build: Support compiling C++ source file ... Browse Code »

    Add new rule to compile .cpp file to .o use g++. C++ support is required
    for built-in clang and LLVM support.

    Linker side support will be introduced by following commits.

    Signed-off-by: Wang Nan
    Cc: Alexei Starovoitov
    Cc: He Kuang
    Cc: Jiri Olsa
    Cc: Zefan Li
    Cc: pi3orama@163.com
    Link: http://lkml.kernel.org/r/1474874832-134786-2-git-send-email-wangnan0@huawei.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Wang Nan
     

03 Oct, 2016

1 commit

  • 0c3b7e426   tools build: Add support for host programs format ... Browse Code »

    In some cases, like for fixdep and shortly for jevents, we need to build a tool
    to run on the host that will be used in building a tool, such as perf, that is
    being cross compiled, so do like the kernel and provide HOSTCC, HOSTLD and HOSTAR
    to do that.

    Signed-off-by: Jiri Olsa
    Requested-by: Andi Kleen
    Requested-and-Tested-by: Arnaldo Carvalho de Melo
    Cc: Madhavan Srinivasan
    Cc: Peter Zijlstra
    Cc: Sukadev Bhattiprolu
    Cc: linuxppc-dev@lists.ozlabs.org
    Link: http://lkml.kernel.org/r/20160927141846.GA6589@krava
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

20 Apr, 2016

1 commit

03 Mar, 2016

1 commit

  • 676787939   tools build: Use .s extension for preprocessed assembler code ... Browse Code »

    The "man gcc" says .i extension represents the file is C source code
    that should not be preprocessed. Here, .s should be used.

    For clarification,
    .c ---(preprocess)---> .i
    .S ---(preprocess)---> .s

    Signed-off-by: Masahiro Yamada
    Acked-by: Jiri Olsa
    Cc: Aaro Koskinen
    Cc: Adrian Hunter
    Cc: Lukas Wunner
    Link: http://lkml.kernel.org/r/1454263140-19670-1-git-send-email-yamada.masahiro@socionext.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Masahiro Yamada
     

29 Sep, 2015

1 commit

  • 9fb81323e   tools build: Make the fixdep helper part of the build process ... Browse Code »

    Making the fixdep helper to be invoked within dep-cmd.

    Each user of the build framework needs to make sure fixdep exists before
    executing the build itself.

    If the build doesn't find fixdep, it falls back to the old style
    dependency tracking.

    Signed-off-by: Jiri Olsa
    Cc: David Ahern
    Cc: Namhyung Kim
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1443004442-32660-6-git-send-email-jolsa@kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

26 Aug, 2015

1 commit

  • 0bdede8a3   tools build: Allow duplicate objects in the object list ... Browse Code »

    It's sometimes useful to specify the object affiliation to multiple
    config options like:

    libperf-$(CONFIG_X86) += tsc.o
    libperf-$(CONFIG_AUXTRACE) += tsc.o

    while the object itself is linked only once. Adding the support for this
    and ignoring duplicate objects in the object list.

    Suggested-by: Arnaldo Carvalho de Melo
    Signed-off-by: Jiri Olsa
    Cc: Adrian Hunter
    Cc: Sukadev Bhattiprolu
    Link: http://lkml.kernel.org/r/20150826130103.GF22670@krava.redhat.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

17 Aug, 2015

1 commit

  • 237fae79f   perf tools: Add Intel PT instruction decoder ... Browse Code »

    Add support for decoding instructions for Intel Processor Trace. The
    kernel x86 instruction decoder is copied for this.

    This essentially provides intel_pt_get_insn() which takes a binary
    buffer, uses the kernel's x86 instruction decoder to get details of the
    instruction and then categorizes it for consumption by an Intel PT
    decoder.

    Signed-off-by: Adrian Hunter
    Cc: Jiri Olsa
    Link: http://lkml.kernel.org/r/1439450095-30122-1-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     

02 Jul, 2015

1 commit

  • 642273795   perf tools: Create config.detected into OUTPUT directory ... Browse Code »

    Create config.detected into OUTPUT directory instead of source
    directory.

    This fixes parallel builds that share the same source directory.

    Signed-off-by: Aaro Koskinen
    Acked-by: Jiri Olsa
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1435751683-18500-1-git-send-email-aaro.koskinen@nokia.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Aaro Koskinen
     

23 Jun, 2015

1 commit

  • 6bc4c3ad3   Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Browse Code »

    Pull perf fixes from Ingo Molnar:
    "These are the left over fixes from the v4.1 cycle"

    * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    perf tools: Fix build breakage if prefix= is specified
    perf/x86: Honor the architectural performance monitoring version
    perf/x86/intel: Fix PMI handling for Intel PT
    perf/x86/intel/bts: Fix DS area sharing with x86_pmu events
    perf/x86: Add more Broadwell model numbers
    perf: Fix ring_buffer_attach() RCU sync, again

    Linus Torvalds
     

20 Jun, 2015

1 commit

  • 75e84ab90   perf tools: Fix build breakage if prefix= is specified ... Browse Code »

    Invoking Makefile.perf with prefix= breaks the build since Makefile.perf
    hands that variable down to Makefile.build where it overrides

    prefix := $(subst ./,,$(OUTPUT)$(dir)/)

    leading to errors like this:

    No rule to make target '/usrabspath.o', needed by '/usrlibperf-in.o'

    Signed-off-by: Lukas Wunner
    Acked-by: Jiri Olsa
    Cc: David Ahern
    Fixes: c819e2cf2eb6f65d3208d195d7a0edef6108d5
    Link: http://lkml.kernel.org/r/5582c48a.84a22b0a.a918.5285SMTPIN_ADDED_MISSING@mx.google.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Lukas Wunner
     

29 May, 2015

1 commit

  • d7a3d85e0   perf build: Do not fail on missing Build file ... Browse Code »

    Allow nesting into directories without Build file. Currently we force
    include of the Build file, which fails the build when the Build file is
    missing.

    We already support empty *-in.o' objects if there's nothing in the
    directory to be compiled, so we can just use it for missing Build file
    cases.

    Also adding this case under tests.

    Reported-by: Rabin Vincent
    Signed-off-by: Jiri Olsa
    Cc: David Ahern
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Rabin Vincent
    Link: http://lkml.kernel.org/r/1432914178-24086-1-git-send-email-jolsa@kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

13 Feb, 2015

2 commits

  • ceed252fe   perf build: Display make commands on V=1 ... Browse Code »

    Get more verbose output wrt displaying executed commands from make.

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-68v67h59zoz7ilb1ggcuff3j@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     
  • 1999307b4   perf build: Add single target build framework support ... Browse Code »

    Add support to build single targets, like:

    $ make util/map.o # objects
    $ make util/map.i # preprocessor
    $ make util/map.s # assembly

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-tt10y0dmweq6rjaod937rpb4@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

12 Feb, 2015

4 commits

  • 9352aabad   perf build: Add libperf objects building ... Browse Code »

    Move the util objects building under build framework.

    Add the new libperf build object so it's separated from the rest of the
    perf code and could be librarized.

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-574tgt9t23tnxo9td8qjiibc@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     
  • 579ff6d40   tools build: Add subdir support ... Browse Code »

    Add support to make directory any time we build objects out of the tree
    (O=/tmp/krava) and the output directory does not exist.

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-h80ukls4o2kpr0e4c4bfln6u@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     
  • fcfd6611f   tools build: Add detected config support ... Browse Code »

    Adding support to include detected configuration makefile into the build
    process. This will allow the Build objects to be configurable based on
    the config data, like:

    perf-$(CONFIG_KRAVA) += krava.o

    The configuration is stored in '.config-detected' file, which is
    generated for each compilation.

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-bl8qho0ubck7aqrbbfu9inlm@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     
  • c819e2cf2   tools build: Add new build support ... Browse Code »

    Adding new build framework into 'tools/build' to be used by tools.

    There's no change for actual building at this point, it comes in the
    next patches.

    The idea and more details are explained in the
    'tools/build/Documentation/Build.txt' file.

    I adopted everything from the kernel build system, with some changes to
    allow for multiple binaries build definitions.

    While the kernel's build output is single image (forget modules) we need
    to be able to build several binaries/libraries.

    The basic idea is that sser provides 'Build' files with objects
    definitions like:

    perf-y += a.o
    perf-y += b.o
    libperf-y += c.o
    libperf-y += d.o

    and the build framework outputs files:

    perf-in.o # a.o, b.o compiled in
    libperf-in.o # c.o, d.o compiled in

    Signed-off-by: Jiri Olsa
    Tested-by: Sukadev Bhattiprolu
    Tested-by: Will Deacon
    Cc: Alexis Berlemont
    Cc: Borislav Petkov
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-fbj22h4av0otlxupwcmrxgpa@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa