Eric Lee / smarc-fsl-linux-kernel

23 Nov, 2019

1 commit

  • 2bee1b584   mips: add support for folded p4d page tables ... Browse Code »

    Implement primitives necessary for the 4th level folding, add walks of p4d
    level where appropriate, replace 5leve-fixup.h with pgtable-nop4d.h and
    drop usage of __ARCH_USE_5LEVEL_HACK.

    Signed-off-by: Mike Rapoport
    Signed-off-by: Paul Burton
    Cc: Ralf Baechle
    Cc: James Hogan
    Cc: linux-mips@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    Cc: linux-mm@kvack.org
    Cc: Mike Rapoport

    Mike Rapoport
     

08 Feb, 2019

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
     

04 Oct, 2016

1 commit

  • 01882b4d5   MIPS: c-r4k: Split user/kernel flush_icache_range() ... Browse Code »

    flush_icache_range() is used for both user addresses (i.e.
    cacheflush(2)), and kernel addresses (as the API documentation
    describes).

    This isn't really suitable however for Enhanced Virtual Addressing (EVA)
    where cache operations on usermode addresses must use a different
    instruction, and the protected cache ops assume user addresses, making
    flush_icache_range() ineffective on kernel addresses.

    Split out a new __flush_icache_user_range() and
    __local_flush_icache_user_range() for users which actually want to flush
    usermode addresses (note that flush_icache_user_range() already exists
    on various architectures but with different arguments).

    The implementation of flush_icache_range() will be changed in an
    upcoming commit to use unprotected normal cache ops so as to always work
    on the kernel mode address space.

    Signed-off-by: James Hogan
    Cc: Leonid Yegoshin
    Cc: linux-mips@linux-mips.org
    Patchwork: https://patchwork.linux-mips.org/patch/14152/
    Signed-off-by: Ralf Baechle

    James Hogan
     

22 Jun, 2015

1 commit

  • 3bcb03f3a   MIPS: tlb-r3k: Move CP0.Wired register initialisation to `tlb_init' ... Browse Code »

    Move the initialisation of the CP0.Wired register implemented by Toshiba
    TX3922 and TX3927 processors from `tx39_cache_init' to `tlb_init' where
    it belongs, correcting code structure and making sure initialisation
    does not rely on `tx39_cache_init' being called before `tlb_init' to
    work correctly.

    Make `r3k_have_wired_reg' static as it's no longer externally referred
    to; remove a stale declaration too.

    Signed-off-by: Maciej W. Rozycki
    Cc: James Hogan
    Cc: linux-mips@linux-mips.org
    Patchwork: https://patchwork.linux-mips.org/patch/10195/
    Signed-off-by: Ralf Baechle

    Maciej W. Rozycki
     

15 Jul, 2013

1 commit

  • 078a55fc8   MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code ... Browse Code »

    commit 3747069b25e419f6b51395f48127e9812abc3596 upstream.

    The __cpuinit type of throwaway sections might have made sense
    some time ago when RAM was more constrained, but now the savings
    do not offset the cost and complications. For example, the fix in
    commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
    is a good example of the nasty type of bugs that can be created
    with improper use of the various __init prefixes.

    After a discussion on LKML[1] it was decided that cpuinit should go
    the way of devinit and be phased out. Once all the users are gone,
    we can then finally remove the macros themselves from linux/init.h.

    Note that some harmless section mismatch warnings may result, since
    notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
    and are flagged as __cpuinit -- so if we remove the __cpuinit from
    the arch specific callers, we will also get section mismatch warnings.
    As an intermediate step, we intend to turn the linux/init.h cpuinit
    related content into no-ops as early as possible, since that will get
    rid of these warnings. In any case, they are temporary and harmless.

    Here, we remove all the MIPS __cpuinit from C code and __CPUINIT
    from asm files. MIPS is interesting in this respect, because there
    are also uasm users hiding behind their own renamed versions of the
    __cpuinit macros.

    [1] https://lkml.org/lkml/2013/5/20/589

    [ralf@linux-mips.org: Folded in Paul's followup fix.]

    Signed-off-by: Paul Gortmaker
    Cc: linux-mips@linux-mips.org
    Patchwork: https://patchwork.linux-mips.org/patch/5494/
    Patchwork: https://patchwork.linux-mips.org/patch/5495/
    Patchwork: https://patchwork.linux-mips.org/patch/5509/
    Signed-off-by: Ralf Baechle

    Paul Gortmaker
     

01 Feb, 2013

1 commit

  • 703422879   MIPS: Whitespace cleanup. ... Browse Code »

    Having received another series of whitespace patches I decided to do this
    once and for all rather than dealing with this kind of patches trickling
    in forever.

    Signed-off-by: Ralf Baechle

    Ralf Baechle
     

29 Mar, 2012

1 commit

20 Oct, 2011

1 commit

  • d9cdc901a   MIPS: cache: Provide cache flush operations for XFS ... Browse Code »

    Until now flush_kernel_vmap_range() and invalidate_kernel_vmap_range() did
    not exist on MIPS resulting in heavy cache corruption on XFS filesystems.

    Left for the post-3.0 time: optimization and make this work with highmem,
    too. Since the combination of highmem + cache aliases atm doesn't work
    this isn't a regression.

    Signed-off-by: Ralf Baechle
    Patchwork: https://patchwork.linux-mips.org/patch/2505/

    Ralf Baechle
     

06 Apr, 2011

1 commit