Eric Lee / smarc-fsl-linux-kernel

21 May, 2019

1 commit

15 May, 2019

1 commit

  • 73b0140bf   mm/gup: change GUP fast to use flags rather than a write 'bool' ... Browse Code »

    To facilitate additional options to get_user_pages_fast() change the
    singular write parameter to be gup_flags.

    This patch does not change any functionality. New functionality will
    follow in subsequent patches.

    Some of the get_user_pages_fast() call sites were unchanged because they
    already passed FOLL_WRITE or 0 for the write parameter.

    NOTE: It was suggested to change the ordering of the get_user_pages_fast()
    arguments to ensure that callers were converted. This breaks the current
    GUP call site convention of having the returned pages be the final
    parameter. So the suggestion was rejected.

    Link: http://lkml.kernel.org/r/20190328084422.29911-4-ira.weiny@intel.com
    Link: http://lkml.kernel.org/r/20190317183438.2057-4-ira.weiny@intel.com
    Signed-off-by: Ira Weiny
    Reviewed-by: Mike Marshall
    Cc: Aneesh Kumar K.V
    Cc: Benjamin Herrenschmidt
    Cc: Borislav Petkov
    Cc: Dan Williams
    Cc: "David S. Miller"
    Cc: Heiko Carstens
    Cc: Ingo Molnar
    Cc: James Hogan
    Cc: Jason Gunthorpe
    Cc: John Hubbard
    Cc: "Kirill A. Shutemov"
    Cc: Martin Schwidefsky
    Cc: Michal Hocko
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Ralf Baechle
    Cc: Rich Felker
    Cc: Thomas Gleixner
    Cc: Yoshinori Sato
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ira Weiny
     

22 Jan, 2019

1 commit

04 Jan, 2019

1 commit

  • 96d4f267e   Remove 'type' argument from access_ok() function ... Browse Code »

    Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
    of the user address range verification function since we got rid of the
    old racy i386-only code to walk page tables by hand.

    It existed because the original 80386 would not honor the write protect
    bit when in kernel mode, so you had to do COW by hand before doing any
    user access. But we haven't supported that in a long time, and these
    days the 'type' argument is a purely historical artifact.

    A discussion about extending 'user_access_begin()' to do the range
    checking resulted this patch, because there is no way we're going to
    move the old VERIFY_xyz interface to that model. And it's best done at
    the end of the merge window when I've done most of my merges, so let's
    just get this done once and for all.

    This patch was mostly done with a sed-script, with manual fix-ups for
    the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

    There were a couple of notable cases:

    - csky still had the old "verify_area()" name as an alias.

    - the iter_iov code had magical hardcoded knowledge of the actual
    values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
    really used it)

    - microblaze used the type argument for a debug printout

    but other than those oddities this should be a total no-op patch.

    I tried to fix up all architectures, did fairly extensive grepping for
    access_ok() uses, and the changes are trivial, but I may have missed
    something. Any missed conversion should be trivially fixable, though.

    Signed-off-by: Linus Torvalds

    Linus Torvalds
     

16 Oct, 2018

6 commits

26 Sep, 2018

6 commits

14 Sep, 2018

20 commits

02 Aug, 2018

1 commit

07 Jul, 2018

1 commit

  • ac3167257   headers: separate linux/mod_devicetable.h from linux/platform_device.h ... Browse Code »

    At over 4000 #includes, is the 9th most
    #included header file in the Linux kernel. It does not need
    , so drop that header and explicitly add
    to source files that need it.

    4146 #include

    After this patch, there are 225 files that use ,
    for a reduction of around 3900 times that
    does not have to be read & parsed.

    225 #include

    This patch was build-tested on 20 different arch-es.

    It also makes these drivers SubmitChecklist#1 compliant.

    Signed-off-by: Randy Dunlap
    Reported-by: kbuild test robot # drivers/media/platform/vimc/
    Reported-by: kbuild test robot # drivers/pinctrl/pinctrl-u300.c
    Signed-off-by: Greg Kroah-Hartman

    Randy Dunlap
     

03 Jul, 2018

1 commit

12 Feb, 2018

1 commit

  • a9a08845e   vfs: do bulk POLL* -> EPOLL* replacement ... Browse Code »

    This is the mindless scripted replacement of kernel use of POLL*
    variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
    L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
    for f in $L; do sed -i "-es/^\([^\"]*\)\(\\)/\\1E\\2/" $f; done
    done

    with de-mangling cleanups yet to come.

    NOTE! On almost all architectures, the EPOLL* constants have the same
    values as the POLL* constants do. But they keyword here is "almost".
    For various bad reasons they aren't the same, and epoll() doesn't
    actually work quite correctly in some cases due to this on Sparc et al.

    The next patch from Al will sort out the final differences, and we
    should be all done.

    Scripted-by: Al Viro
    Signed-off-by: Linus Torvalds

    Linus Torvalds