Eric Lee / smarc-ti-linux-kernel

04 Mar, 2015

1 commit

23 Feb, 2015

1 commit

  • c517d838e   Linux 4.0-rc1 ... Browse Code »

    .. after extensive statistical analysis of my G+ polling, I've come to
    the inescapable conclusion that internet polls are bad.

    Big surprise.

    But "Hurr durr I'ma sheep" trounced "I like online polls" by a 62-to-38%
    margin, in a poll that people weren't even supposed to participate in.
    Who can argue with solid numbers like that? 5,796 votes from people who
    can't even follow the most basic directions?

    In contrast, "v4.0" beat out "v3.20" by a slimmer margin of 56-to-44%,
    but with a total of 29,110 votes right now.

    Now, arguably, that vote spread is only about 3,200 votes, which is less
    than the almost six thousand votes that the "please ignore" poll got, so
    it could be considered noise.

    But hey, I asked, so I'll honor the votes.

    Linus Torvalds
     

20 Feb, 2015

1 commit

  • 27a22ee4c   Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild ... Browse Code »

    Pull kbuild updates from Michal Marek:

    - several cleanups in kbuild

    - serialize multiple *config targets so that 'make defconfig kvmconfig'
    works

    - The cc-ifversion macro got support for an else-branch

    * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
    kbuild,gcov: simplify kernel/gcov/Makefile more
    kbuild: allow cc-ifversion to have the argument for false condition
    kbuild,gcov: simplify kernel/gcov/Makefile
    kbuild,gcov: remove unnecessary workaround
    kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion
    kbuild: fix cc-ifversion macro
    kbuild: drop $(version_h) from MRPROPER_FILES
    kbuild: use mixed-targets when two or more config targets are given
    kbuild: remove redundant line from bounds.h/asm-offsets.h
    kbuild: merge bounds.h and asm-offsets.h rules
    kbuild: Drop support for clean-rule

    Linus Torvalds
     

18 Feb, 2015

1 commit

  • 3ee7b3fa2   scripts/gdb: add infrastructure ... Browse Code »

    This provides the basic infrastructure to load kernel-specific python
    helper scripts when debugging the kernel in gdb.

    The loading mechanism is based on gdb loading for -gdb.py when
    opening . Therefore, this places a corresponding link to the
    main helper script into the output directory that contains vmlinux.

    The main scripts will pull in submodules containing Linux specific gdb
    commands and functions. To avoid polluting the source directory with
    compiled python modules, we link to them from the object directory.

    Due to gdb.parse_and_eval and string redirection for gdb.execute, we
    depend on gdb >= 7.2.

    This feature is enabled via CONFIG_GDB_SCRIPTS.

    Signed-off-by: Jan Kiszka
    Acked-by: Michal Marek [kbuild stuff]
    Cc: Thomas Gleixner
    Cc: Jason Wessel
    Cc: Andi Kleen
    Cc: Ben Widawsky
    Cc: Borislav Petkov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jan Kiszka
     

14 Feb, 2015

1 commit

  • 0b24becc8   kasan: add kernel address sanitizer infrastructure ... Browse Code »

    Kernel Address sanitizer (KASan) is a dynamic memory error detector. It
    provides fast and comprehensive solution for finding use-after-free and
    out-of-bounds bugs.

    KASAN uses compile-time instrumentation for checking every memory access,
    therefore GCC > v4.9.2 required. v4.9.2 almost works, but has issues with
    putting symbol aliases into the wrong section, which breaks kasan
    instrumentation of globals.

    This patch only adds infrastructure for kernel address sanitizer. It's
    not available for use yet. The idea and some code was borrowed from [1].

    Basic idea:

    The main idea of KASAN is to use shadow memory to record whether each byte
    of memory is safe to access or not, and use compiler's instrumentation to
    check the shadow memory on each memory access.

    Address sanitizer uses 1/8 of the memory addressable in kernel for shadow
    memory and uses direct mapping with a scale and offset to translate a
    memory address to its corresponding shadow address.

    Here is function to translate address to corresponding shadow address:

    unsigned long kasan_mem_to_shadow(unsigned long addr)
    {
    return (addr >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET;
    }

    where KASAN_SHADOW_SCALE_SHIFT = 3.

    So for every 8 bytes there is one corresponding byte of shadow memory.
    The following encoding used for each shadow byte: 0 means that all 8 bytes
    of the corresponding memory region are valid for access; k (1
    Acked-by: Michal Marek
    Signed-off-by: Andrey Konovalov
    Cc: Dmitry Vyukov
    Cc: Konstantin Serebryany
    Cc: Dmitry Chernenkov
    Cc: Yuri Gribov
    Cc: Konstantin Khlebnikov
    Cc: Sasha Levin
    Cc: Christoph Lameter
    Cc: Joonsoo Kim
    Cc: Dave Hansen
    Cc: Andi Kleen
    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: "H. Peter Anvin"
    Cc: Christoph Lameter
    Cc: Pekka Enberg
    Cc: David Rientjes
    Cc: Stephen Rothwell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrey Ryabinin
     

12 Feb, 2015

1 commit

  • b3d6524ff   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux ... Browse Code »

    Pull s390 updates from Martin Schwidefsky:

    - The remaining patches for the z13 machine support: kernel build
    option for z13, the cache synonym avoidance, SMT support,
    compare-and-delay for spinloops and the CES5S crypto adapater.

    - The ftrace support for function tracing with the gcc hotpatch option.
    This touches common code Makefiles, Steven is ok with the changes.

    - The hypfs file system gets an extension to access diagnose 0x0c data
    in user space for performance analysis for Linux running under z/VM.

    - The iucv hvc console gets wildcard spport for the user id filtering.

    - The cacheinfo code is converted to use the generic infrastructure.

    - Cleanup and bug fixes.

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
    s390/process: free vx save area when releasing tasks
    s390/hypfs: Eliminate hypfs interval
    s390/hypfs: Add diagnose 0c support
    s390/cacheinfo: don't use smp_processor_id() in preemptible context
    s390/zcrypt: fixed domain scanning problem (again)
    s390/smp: increase maximum value of NR_CPUS to 512
    s390/jump label: use different nop instruction
    s390/jump label: add sanity checks
    s390/mm: correct missing space when reporting user process faults
    s390/dasd: cleanup profiling
    s390/dasd: add locking for global_profile access
    s390/ftrace: hotpatch support for function tracing
    ftrace: let notrace function attribute disable hotpatching if necessary
    ftrace: allow architectures to specify ftrace compile options
    s390: reintroduce diag 44 calls for cpu_relax()
    s390/zcrypt: Add support for new crypto express (CEX5S) adapter.
    s390/zcrypt: Number of supported ap domains is not retrievable.
    s390/spinlock: add compare-and-delay to lock wait loops
    s390/tape: remove redundant if statement
    s390/hvc_iucv: add simple wildcard matches to the iucv allow filter
    ...

    Linus Torvalds
     

09 Feb, 2015

1 commit

02 Feb, 2015

1 commit

29 Jan, 2015

1 commit

  • c0a80c0c2   ftrace: allow architectures to specify ftrace compile options ... Browse Code »

    If the kernel is compiled with function tracer support the -pg compile option
    is passed to gcc to generate extra code into the prologue of each function.

    This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE
    makefile variable which architectures can override if a different option
    should be used for code generation.

    Acked-by: Steven Rostedt
    Signed-off-by: Heiko Carstens
    Signed-off-by: Martin Schwidefsky

    Heiko Carstens
     

26 Jan, 2015

1 commit

18 Jan, 2015

1 commit

12 Jan, 2015

1 commit

09 Jan, 2015

1 commit

  • 90ac086bc   Makefile: include arch/*/include/generated/uapi before .../generated ... Browse Code »

    The introduction of the uapi directories in v3.7-rc1 moved some of the
    generated headers from arch/*/include/generated to the uapi directory,
    keeping the #include directives intact.

    This creates a problem when bisecting, because the unversioned files are
    not cleaned automatically by git and the compiler might include stale
    headers as a result. Instead of cleaning them in the Makefiles, promote
    arch/*/include/generated/uapi in the search path. Under normal
    circumstances, there is no overlap between this uapi subdirectory and
    its parent, so the include choices remain the same. We keep
    arch/*/include/generated/uapi in the USERINCLUDE variable so that it is
    usable standalone.

    Note that we cannot completely swap the order of the uapi and
    kernel-only directories, since the headers in include/uapi/asm-generic
    are meant to be wrapped by their include/asm-generic counterparts when
    building kernel code.

    Reported-by: "Nicholas A. Bellinger"
    Reported-by: David Drysdale
    Signed-off-by: Michal Marek
    Signed-off-by: Linus Torvalds

    Michal Marek
     

08 Jan, 2015

2 commits

  • c22bd32c6   kbuild: drop $(version_h) from MRPROPER_FILES ... Browse Code »

    Now $(version_h) is include/generated/uapi/linux/version.h.

    $(version_h) in MRPROPER_FILES is redundant because it is covered
    by include/generated in MRPROPER_DIRS.

    Signed-off-by: Masahiro Yamada
    Signed-off-by: Michal Marek

    Masahiro Yamada
     
  • d0d38cd9e   kbuild: use mixed-targets when two or more config targets are given ... Browse Code »

    "make kvmconfig" expects that the .config has already been created,
    but some people might want to create the .config and run kvmconfig
    in one shot command, like this:

    $ make defconfig kvmconfig

    To make sure this command works correctly even if -j* option is set,
    we must handle them one by one.
    This commit turns on mixed-targets when $(MAKECMDGOALS) includes
    at least one config target and also includes another target.

    Signed-off-by: Masahiro Yamada
    Signed-off-by: Michal Marek

    Masahiro Yamada
     

06 Jan, 2015

1 commit

29 Dec, 2014

1 commit

21 Dec, 2014

2 commits

  • 97bf6af1f   Linux 3.19-rc1 Browse Code »
    Linus Torvalds
     
  • d08372ca2   Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild ... Browse Code »

    Pull kbuild updates from Michal Marek:
    "Here are the kbuild changes for v3.19-rc1:

    - Cleanups and deduplication in the main Makefile and
    scripts/Makefile.*
    - Sort the output of *config targets in make help
    - Old is always removed to avoid a surprise during
    bisecting
    - Warning fix in kconfig"

    * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
    kbuild: remove redundant -rR flag of hdr-inst
    kbuild: Fix make help- on powerpc
    kbuild: Automatically remove stale file
    kconfig: Fix warning "‘jump’ may be used uninitialized"
    Makefile: sort list of defconfig targets in make help output
    kbuild: Remove duplicate $(cmd) definition in Makefile.clean
    kbuild: collect shorthands into scripts/Kbuild.include

    Linus Torvalds
     

08 Dec, 2014

1 commit

01 Dec, 2014

1 commit

28 Nov, 2014

3 commits

26 Nov, 2014

1 commit

  • 371fdc77a   kbuild: collect shorthands into scripts/Kbuild.include ... Browse Code »
    26

    The shorthand "clean" is defined in both the top Makefile and
    scripts/Makefile.clean. Likewise, the "hdr-inst" is defined in
    both the top Makefile and scripts/Makefile.headersinst.

    To reduce code duplication, this commit collects them into
    scripts/Kbuild.include like the "build" and "modbuiltin" shorthands.
    It requires scripts/Makefile.clean to include scripts/Kbuild.include,
    but its impact on the performance of "make clean" should be
    negligible.

    Signed-off-by: Masahiro Yamada
    Signed-off-by: Michal Marek

    Masahiro Yamada
     

24 Nov, 2014

1 commit

17 Nov, 2014

1 commit

16 Nov, 2014

1 commit

  • 51b97e354   kernel: use the gnu89 standard explicitly ... Browse Code »

    Sasha Levin reports:
    "gcc5 changes the default standard to c11, which makes kernel build
    unhappy

    Explicitly define the kernel standard to be gnu89 which should keep
    everything working exactly like it was before gcc5"

    There are multiple small issues with the new default, but the biggest
    issue seems to be that the old - and very useful - GNU extension to
    allow a cast in front of an initializer has gone away.

    Patch updated by Kirill:
    "I'm pretty sure all gcc versions you can build kernel with supports
    -std=gnu89. cc-option is redunrant.

    We also need to adjust HOSTCFLAGS otherwise allmodconfig fails for me"

    Note by Andrew Pinski:
    "Yes it was reported and both problems relating to this extension has
    been added to gnu99 and gnu11. Though there are other issues with the
    kernel dealing with extern inline have different semantics between
    gnu89 and gnu99/11"

    End result: we may be able to move up to a newer stdc model eventually,
    but right now the newer models have some annoying deficiencies, so the
    traditional "gnu89" model ends up being the preferred one.

    Signed-off-by: Sasha Levin
    Singed-off-by: Kirill A. Shutemov
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

10 Nov, 2014

1 commit

03 Nov, 2014

1 commit

27 Oct, 2014

1 commit

20 Oct, 2014

1 commit

14 Oct, 2014

1 commit

  • f33a3faa2   Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild ... Browse Code »

    Pull kbuild changes from Michal Marek:
    - fix for handling dependencies of *-objs targets by Masahiro Yamada
    - lots of cleanups in the kbuild machinery, also by Masahiro
    - fixes for the kconfig build to use an UTF-8 capable ncurses library
    if possible and to build on not-so-standard installs
    - some more minor fixes

    * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
    kbuild: Do not reference *-n variables in the Makefile
    kbuild: simplify build, clean, modbuiltin shorthands
    kbuild: arm: Do not define "comma" twice
    kbuild: remove obj-n and lib-n handling
    kbuild: remove unnecessary variable initializaions
    kbuild: remove unnecessary "obj- := dummy.o" trick
    kbuild: handle C=... and M=... after entering into build directory
    kbuild: use $(Q) for sub-make target
    kbuild: fake the "Entering directory ..." message more simply
    kconfig/lxdialog: get ncurses CFLAGS with pkg-config
    kconfig: nconfig: fix multi-byte UTF handling
    kconfig: lxdialog: fix spelling
    kbuild: Make scripts executable
    kbuild: remove redundant clean-files from scripts/kconfig/Makefile
    kbuild: refactor script/kconfig/Makefile
    kbuild: handle the dependency of multi-objs hostprogs appropriately
    kbuild: handle multi-objs dependency appropriately

    Linus Torvalds
     

08 Oct, 2014

2 commits

  • b6420ebd4   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/doc ... Browse Code »

    Pull documentation updates from Jiri Kosina:
    "Updates to kernel documentation.

    I took this over (hopefully temporarily) from Randy who was not
    willing to maintain it any longer. This pile mostly is a relay of
    queue that Randy already had in his tree"

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/doc:
    Documentation: fix broken v4l-utils URL
    Documentation: update include path for mpssd
    Documentation: correct parameter error for dma_mapping_error
    MAINTAINERS: update location of linux-doc tree
    Documentation: remove networking/.gitignore
    tools: add more endian.h macros
    Make Documenation depend on headers_install
    Docs: this_cpu_ops: remove redundant add forms
    Documentation: disable vdso_test to avoid breakage with old glibc
    Documentation: update vDSO makefile to build portable examples
    Documentation: update .gitignore files
    Documentation: support glibc versions without htole macros
    v4l2-pci-skeleton: Only build if PCI is available
    Documentation: fix misc. warnings
    Documentation: make functions static to avoid prototype warnings
    Documentation: add makefiles for more targets
    Documentation: use subdir-y to avoid unnecessary built-in.o files

    Linus Torvalds
     
  • bdf428feb   Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux ... Browse Code »

    Pull module update from Rusty Russell:
    "Nothing major: support for compressing modules, and auto-tainting
    params.

    PS. My virtio-next tree is empty: DaveM took the patches I had. There
    might be a virtio-rng starvation fix, but so far it's a bit voodoo
    so I will get to that in the next two days or it will wait"

    * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
    moduleparam: Resolve missing-field-initializer warning
    kbuild: handle module compression while running 'make modules_install'.
    modinst: wrap long lines in order to enhance cmd_modules_install
    modsign: lookup lines ending in .ko in .mod files
    modpost: simplify file name generation of *.mod.c files
    modpost: reduce visibility of symbols and constify r/o arrays
    param: check for tainting before calling set op.
    drm/i915: taint the kernel if unsafe module parameters are set
    module: add module_param_unsafe and module_param_named_unsafe
    module: make it possible to have unsafe, tainting module params
    module: rename KERNEL_PARAM_FL_NOARG to avoid confusion

    Linus Torvalds
     

06 Oct, 2014

1 commit

02 Oct, 2014

4 commits