Eric Lee / smarc-fsl-linux-kernel

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

05 Mar, 2010

1 commit

  • 5dd4056db   dquot: cleanup space allocation / freeing routines ... Browse Code »

    Get rid of the alloc_space, free_space, reserve_space, claim_space and
    release_rsv dquot operations - they are always called from the filesystem
    and if a filesystem really needs their own (which none currently does)
    it can just call into it's own routine directly.

    Move shared logic into the common __dquot_alloc_space,
    dquot_claim_space_nodirty and __dquot_free_space low-level methods,
    and rationalize the wrappers around it to move as much as possible
    code into the common block for CONFIG_QUOTA vs not. Also rename
    all these helpers to be named dquot_* instead of vfs_dq_*.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Jan Kara

    Christoph Hellwig
     

26 Mar, 2009

1 commit

04 Jan, 2008

2 commits

20 Oct, 2007

1 commit

15 Oct, 2007

1 commit

07 Jun, 2007

1 commit

14 Dec, 2006

1 commit

  • 5cbded585   [PATCH] getting rid of all casts of k[cmz]alloc() calls ... Browse Code »

    Run this:

    #!/bin/sh
    for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
    echo "De-casting $f..."
    perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
    done

    And then go through and reinstate those cases where code is casting pointers
    to non-pointers.

    And then drop a few hunks which conflicted with outstanding work.

    Cc: Russell King , Ian Molton
    Cc: Mikael Starvik
    Cc: Yoshinori Sato
    Cc: Roman Zippel
    Cc: Geert Uytterhoeven
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Kyle McMartin
    Cc: Benjamin Herrenschmidt
    Cc: Martin Schwidefsky
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Greg KH
    Cc: Jens Axboe
    Cc: Paul Fulghum
    Cc: Alan Cox
    Cc: Karsten Keil
    Cc: Mauro Carvalho Chehab
    Cc: Jeff Garzik
    Cc: James Bottomley
    Cc: Ian Kent
    Cc: Steven French
    Cc: David Woodhouse
    Cc: Neil Brown
    Cc: Jaroslav Kysela
    Cc: Takashi Iwai
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robert P. J. Day
     

09 Dec, 2006

1 commit

02 Oct, 2006

2 commits

  • 63f83c9fc   JFS: White space cleanup ... Browse Code »

    Removed trailing spaces & tabs, and spaces preceding tabs.
    Also a couple very minor comment cleanups.

    Signed-off-by: Dave Kleikamp
    (cherry picked from f74156539964d7b3d5164fdf8848e6a682f75b97 commit)

    Dave Kleikamp
     
  • 087387f90   [PATCH] JFS: return correct error when i-node allocation failed ... Browse Code »

    I have seen confusing behavior on JFS when I injected many intentional
    slab allocation errors. The cp command failed with no disk space error
    with enough disk space.

    This patch makes:

    - change the return value in case slab allocation failures happen
    from -ENOSPC to -ENOMEM

    - ialloc() return error code so that the caller can know the reason
    of failures

    Signed-off-by: Akinobu Mita
    Signed-off-by: Dave Kleikamp
    (cherry picked from 2b46f77976f798f3fe800809a1d0ed38763c71c8 commit)

    Akinobu Mita
     

10 Nov, 2005

1 commit

  • dd8a306ac   JFS: Add back directory i_size calculations for legacy partitions ... Browse Code »

    Linux-formatted jfs partitions have a different idea about what i_size
    represents than partitions formatted on OS/2. The i_size calculation is
    now based on the size of the directory index. For legacy partitions, which
    have no directory index, the i_size is never being updated.

    This patch adds back the original i_size calculations for legacy partitions.

    Signed-off-by: Dave Kleikamp

    Dave Kleikamp
     

26 Jul, 2005

1 commit

28 Jun, 2005

1 commit

  • b38a3ab3d   JFS: Code cleanup - getting rid of never-used debug code ... Browse Code »

    I'm finally getting around to cleaning out debug code that I've never used.
    There has always been code ifdef'ed out by _JFS_DEBUG_DMAP, _JFS_DEBUG_IMAP,
    _JFS_DEBUG_DTREE, and _JFS_DEBUG_XTREE, which I have personally never used,
    and I doubt that anyone has since the design stage back in OS/2. There is
    also a function, xtGather, that has never been used, and I don't know why it
    was ever there.

    Signed-off-by: Dave Kleikamp

    Dave Kleikamp
     

03 Jun, 2005

1 commit

03 May, 2005

2 commits

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds