Eric Lee / smarc-fsl-linux-kernel

26 Aug, 2020

1 commit

  • bf9282dc2   cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic ... Browse Code »

    This allows moving the leave_mm() call into generic code before
    rcu_idle_enter(). Gets rid of more trace_*_rcuidle() users.

    Signed-off-by: Peter Zijlstra (Intel)
    Reviewed-by: Steven Rostedt (VMware)
    Reviewed-by: Thomas Gleixner
    Acked-by: Rafael J. Wysocki
    Tested-by: Marco Elver
    Link: https://lkml.kernel.org/r/20200821085348.369441600@infradead.org

    Peter Zijlstra
     

11 Jun, 2020

1 commit

  • 9bf5b9eb2   kernel: move use_mm/unuse_mm to kthread.c ... Browse Code »

    Patch series "improve use_mm / unuse_mm", v2.

    This series improves the use_mm / unuse_mm interface by better documenting
    the assumptions, and my taking the set_fs manipulations spread over the
    callers into the core API.

    This patch (of 3):

    Use the proper API instead.

    Link: http://lkml.kernel.org/r/20200404094101.672954-1-hch@lst.de

    These helpers are only for use with kernel threads, and I will tie them
    more into the kthread infrastructure going forward. Also move the
    prototypes to kthread.h - mmu_context.h was a little weird to start with
    as it otherwise contains very low-level MM bits.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Tested-by: Jens Axboe
    Reviewed-by: Jens Axboe
    Acked-by: Felix Kuehling
    Cc: Alex Deucher
    Cc: Al Viro
    Cc: Felipe Balbi
    Cc: Jason Wang
    Cc: "Michael S. Tsirkin"
    Cc: Zhenyu Wang
    Cc: Zhi Wang
    Cc: Greg Kroah-Hartman
    Link: http://lkml.kernel.org/r/20200404094101.672954-1-hch@lst.de
    Link: http://lkml.kernel.org/r/20200416053158.586887-1-hch@lst.de
    Link: http://lkml.kernel.org/r/20200404094101.672954-5-hch@lst.de
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

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
     

28 Apr, 2016

1 commit

  • f98db6013   sched/core: Add switch_mm_irqs_off() and use it in the scheduler ... Browse Code »

    By default, this is the same thing as switch_mm().

    x86 will override it as an optimization.

    Signed-off-by: Andy Lutomirski
    Reviewed-by: Borislav Petkov
    Cc: Borislav Petkov
    Cc: Linus Torvalds
    Cc: Peter Zijlstra
    Cc: Thomas Gleixner
    Link: http://lkml.kernel.org/r/df401df47bdd6be3e389c6f1e3f5310d70e81b2c.1461688545.git.luto@kernel.org
    Signed-off-by: Ingo Molnar

    Andy Lutomirski
     

22 Sep, 2009

1 commit

  • 3d2d827f5   mm: move use_mm/unuse_mm from aio.c to mm/ ... Browse Code »

    Anyone who wants to do copy to/from user from a kernel thread, needs
    use_mm (like what fs/aio has). Move that into mm/, to make reusing and
    exporting easier down the line, and make aio use it. Next intended user,
    besides aio, will be vhost-net.

    Acked-by: Andrea Arcangeli
    Signed-off-by: Michael S. Tsirkin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael S. Tsirkin