Eric Lee / smarc-fsl-linux-kernel

23 Mar, 2011

1 commit

  • 565d76cb7   zlib: slim down zlib_deflate() workspace when possible ... Browse Code »

    Instead of always creating a huge (268K) deflate_workspace with the
    maximum compression parameters (windowBits=15, memLevel=8), allow the
    caller to obtain a smaller workspace by specifying smaller parameter
    values.

    For example, when capturing oops and panic reports to a medium with
    limited capacity, such as NVRAM, compression may be the only way to
    capture the whole report. In this case, a small workspace (24K works
    fine) is a win, whether you allocate the workspace when you need it (i.e.,
    during an oops or panic) or at boot time.

    I've verified that this patch works with all accepted values of windowBits
    (positive and negative), memLevel, and compression level.

    Signed-off-by: Jim Keniston
    Cc: Herbert Xu
    Cc: David Miller
    Cc: Chris Mason
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jim Keniston
     

25 Oct, 2010

1 commit

  • 088bd455c   jffs2: drop unused model argument ... Browse Code »

    The jffs2 compression framework provides a "model" argument when
    compressing and decompressing, but the caller always passes in NULL
    and the callees never use it. So punt this useless overhead.

    Signed-off-by: Mike Frysinger
    Signed-off-by: Artem Bityutskiy
    Signed-off-by: David Woodhouse

    Mike Frysinger
     

08 Aug, 2010

1 commit

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
     

10 Jul, 2007

1 commit

25 Apr, 2007

1 commit

  • c00c310ea   [JFFS2] Tidy up licensing/copyright boilerplate. ... Browse Code »

    In particular, remove the bit in the LICENCE file about contacting
    Red Hat for alternative arrangements. Their errant IS department broke
    that arrangement a long time ago -- the policy of collecting copyright
    assignments from contributors came to an end when the plug was pulled on
    the servers hosting the project, without notice or reason.

    We do still dual-license it for use with eCos, with the GPL+exception
    licence approved by the FSF as being GPL-compatible. It's just that nobody
    has the right to license it differently.

    Signed-off-by: David Woodhouse

    David Woodhouse
     

15 Feb, 2007

1 commit

  • cd354f1ae   [PATCH] remove many unneeded #includes of sched.h ... Browse Code »

    After Al Viro (finally) succeeded in removing the sched.h #include in module.h
    recently, it makes sense again to remove other superfluous sched.h includes.
    There are quite a lot of files which include it but don't actually need
    anything defined in there. Presumably these includes were once needed for
    macros that used to live in sched.h, but moved to other header files in the
    course of cleaning it up.

    To ease the pain, this time I did not fiddle with any header files and only
    removed #includes from .c-files, which tend to cause less trouble.

    Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
    arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
    allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
    configs in arch/arm/configs on arm. I also checked that no new warnings were
    introduced by the patch (actually, some warnings are removed that were emitted
    by unnecessarily included header files).

    Signed-off-by: Tim Schmielau
    Acked-by: Russell King
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tim Schmielau
     

01 Jul, 2006

1 commit

27 Mar, 2006

1 commit

  • 353ab6e97   [PATCH] sem2mutex: fs/ ... Browse Code »

    Semaphore to mutex conversion.

    The conversion was generated via scripts, and the result was validated
    automatically via a script as well.

    Signed-off-by: Ingo Molnar
    Cc: Eric Van Hensbergen
    Cc: Robert Love
    Cc: Thomas Gleixner
    Cc: David Woodhouse
    Cc: Neil Brown
    Cc: Trond Myklebust
    Cc: Dave Kleikamp
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

07 Nov, 2005

1 commit

23 May, 2005

1 commit

06 May, 2005

1 commit

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