Eric Lee / smarc-fsl-linux-kernel

19 Aug, 2011

1 commit

22 Mar, 2011

14 commits

26 Jan, 2011

1 commit

  • ac751efa6   console: rename acquire/release_console_sem() to console_lock/unlock() ... Browse Code »

    The -rt patches change the console_semaphore to console_mutex. As a
    result, a quite large chunk of the patches changes all
    acquire/release_console_sem() to acquire/release_console_mutex()

    This commit makes things use more neutral function names which dont make
    implications about the underlying lock.

    The only real change is the return value of console_trylock which is
    inverted from try_acquire_console_sem()

    This patch also paves the way to switching console_sem from a semaphore to
    a mutex.

    [akpm@linux-foundation.org: coding-style fixes]
    [akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]
    Signed-off-by: Torben Hohn
    Cc: Thomas Gleixner
    Cc: Greg KH
    Cc: Ingo Molnar
    Cc: Geert Uytterhoeven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Torben Hohn
     

11 Aug, 2010

1 commit

  • d6d1b650a   param: simple locking for sysfs-writable charp parameters ... Browse Code »

    Since the writing to sysfs can free the old one, we need to block that
    when we access the charp variables.

    Signed-off-by: Rusty Russell
    Reviewed-by: Takashi Iwai
    Tested-by: Phil Carmody
    Cc: Jeff Dike
    Cc: Dan Williams
    Cc: John W. Linville
    Cc: Jing Huang
    Cc: James E.J. Bottomley
    Cc: Greg Kroah-Hartman
    Cc: Johannes Berg
    Cc: David S. Miller
    Cc: user-mode-linux-devel@lists.sourceforge.net
    Cc: libertas-dev@lists.infradead.org
    Cc: linux-wireless@vger.kernel.org
    Cc: netdev@vger.kernel.org
    Cc: linux-scsi@vger.kernel.org
    Cc: linux-usb@vger.kernel.org

    Rusty Russell
     

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
     

04 Dec, 2009

1 commit

  • af901ca18   tree-wide: fix assorted typos all over the place ... Browse Code »

    That is "success", "unknown", "through", "performance", "[re|un]mapping"
    , "access", "default", "reasonable", "[con]currently", "temperature"
    , "channel", "[un]used", "application", "example","hierarchy", "therefore"
    , "[over|under]flow", "contiguous", "threshold", "enough" and others.

    Signed-off-by: André Goddard Rosa
    Signed-off-by: Jiri Kosina

    André Goddard Rosa
     

24 Aug, 2008

1 commit

06 Aug, 2008

1 commit

  • 594a88197   vt8623fb: fix kernel oops ... Browse Code »

    commit 20e061fb750d36ec0ffcb2e44ed7dafa9018223b
    Author: Ondrej Zajicek
    Date: Mon Apr 28 02:15:18 2008 -0700

    fbdev: framebuffer_alloc() fixes

    Correct the dev arg of framebuffer_alloc() in arkfb, s3fb and vt8623fb.

    causes a null-pointer deref because "info->dev is NULL, info was just
    kzallocated".

    Signed-off-by: Ondrej Zajicek
    Reported-by: "MadLoisae@gmx.net"
    Tested-by: "MadLoisae@gmx.net"
    Cc: Alexey Dobriyan
    Cc: "Antonino A. Daplas"
    Cc: Krzysztof Helt
    Cc: [2.6.26.x]
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ondrej Zajicek
     

31 Jul, 2008

1 commit

  • 950d442ad   drivers/video: release mutex in error handling code ... Browse Code »

    The mutex is released on a successful return, so it would seem that it
    should be released on an error return as well.

    The semantic patch finds this problem is as follows:
    (http://www.emn.fr/x-info/coccinelle/)

    //
    @@
    expression l;
    @@

    mutex_lock(l);
    ... when != mutex_unlock(l)
    when any
    when strict
    (
    if (...) { ... when != mutex_unlock(l)
    + mutex_unlock(l);
    return ...;
    }
    |
    mutex_unlock(l);
    )
    //

    Signed-off-by: Julia Lawall
    Acked-by: Krzysztof Helt
    Acked-by: Ondrej Zajicek
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Julia Lawall
     

28 Apr, 2008

4 commits

18 Jul, 2007

1 commit

01 Jun, 2007

1 commit

10 May, 2007

2 commits