Eric Lee / smarc-fsl-linux-kernel

19 May, 2010

1 commit

22 Apr, 2010

1 commit

21 Apr, 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
     

22 Mar, 2010

2 commits

16 Mar, 2010

1 commit

03 Feb, 2010

2 commits

  • 342f31e84   HID: make Wacom modesetting failures non-fatal ... Browse Code »

    With Wacom tablet mode-setting moved from userspace into kernel,
    we don't have to consider failures of device queries through the
    _raw callback as hard failure, as the driver can safely continue
    anyway.

    This is consistent with the current USB driver in wacom_sys.c

    Reported-by: Ping Cheng
    Signed-off-by: Jiri Kosina

    Jiri Kosina
     
  • 46a709b90   HID: Implement Wacom quirk in the kernel ... Browse Code »

    The hid-wacom driver required user-space to poke at the tablet
    to make it send data about the cursor location.

    This patch makes it do the same thing but in the kernel.

    Signed-off-by: Bastien Nocera
    Acked-by: Marcel Holtmann
    Signed-off-by: Jiri Kosina

    Bastien Nocera
     

13 Jan, 2010

2 commits

23 Jul, 2009

1 commit

13 May, 2009

1 commit

  • ca2dcd40f   HID: Wacom Graphire Bluetooth driver ... Browse Code »

    Based on the work by Andrew Zabolotny, an HID driver for the Bluetooth
    Wacom tablet. This is required as it uses a slightly different
    protocols from what's currently support by the drivers/input/wacom*
    driver, and those only support USB.

    A user-space patch is required to activate mode 2 of the Wacom tablet,
    as hidp does not support hid_output_raw_report.

    Signed-off-by: Bastien Nocera
    Signed-off-by: Jiri Kosina

    Bastien Nocera