Eric Lee / smarc-fsl-linux-kernel

06 Jan, 2012

1 commit

09 Jan, 2011

1 commit

12 Nov, 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
     

15 Dec, 2009

3 commits

10 Dec, 2009

1 commit

  • 52df6440a   hwmon: Clean up detect functions ... Browse Code »

    As kind is now hard-coded to -1, there is room for code clean-ups.

    Signed-off-by: Jean Delvare
    Acked-by: Corentin Labbe
    Cc: "Mark M. Hoffman"
    Cc: Juerg Haefliger
    Cc: Riku Voipio
    Acked-by: "Hans J. Koch"
    Cc: Rudolf Marek

    Jean Delvare
     

07 Jan, 2009

4 commits

  • 89fac11cb   adt7470: make automatic fan control really work ... Browse Code »

    It turns out that the adt7470's automatic fan control algorithm only works
    when the temperature sensors get updated. This in turn happens only when
    someone tells the chip to read its temperature sensors. Regrettably, this
    means that we have to drive the chip periodically.

    Signed-off-by: Darrick J. Wong
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Darrick J. Wong
     
  • 2f22d5dff   adt7470: observe the number of temperature sensors to shorten update time ... Browse Code »

    The adt7470 driver currently assumes that 1s is the proper time to wait to
    read all temperature sensors. However, the correct time is 200ms *
    number_of_sensors. This patch sets the default time to provide for 10
    sensors and then lowers it based on the number of sensor inputs that have
    nozero values.

    Signed-off-by: Darrick J. Wong
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Darrick J. Wong
     
  • 2e75a4b7a   adt7470: fix pwm at a certain level during temperature sensor scan ... Browse Code »

    In the small window that it takes to read the temperature sensors, the pwm
    outputs momentarily drop to 0. This causes a noticeable hiccup in fan
    speed, which is slightly annoying. The solution is to manually program
    the pwm output with whatever the automatic value is and then shift the
    fans to manual control while reading temperatures. Once that is done, put
    the fans back to whatever mode of control was there before.

    Signed-off-by: Darrick J. Wong
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Darrick J. Wong
     
  • 8f8c1fb0c   adt74{62, 70, 73}: Use DIV_ROUND_CLOSEST for rounded division ... Browse Code »

    Modify some hwmon drivers to use DIV_ROUND_CLOSEST instead of bloating
    source with (naughty) macros.

    Signed-off-by: Darrick J. Wong
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Darrick J. Wong
     

13 Nov, 2008

1 commit

  • 05a9bd46e   adt7470: check input range when sysfs files are written ... Browse Code »

    Implement correct range checking for adt7470 to prevent userland from
    writing impossible values into the chip, and cap out-of-range values per
    standard hwmon conventions.

    Implement correct rounding of input values per standard hwmon conventions.

    Signed-off-by: Darrick J. Wong
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Darrick J. Wong
     

17 Jul, 2008

1 commit

19 Feb, 2008

1 commit

08 Feb, 2008

2 commits

10 Oct, 2007

2 commits