Eric Lee / smarc-fsl-linux-kernel

22 Jun, 2010

1 commit

02 Jun, 2010

1 commit

26 Apr, 2010

1 commit

15 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
     

29 Mar, 2010

1 commit

  • c2a25e819   clocksource: Deprecate clock string across the SH drivers. ... Browse Code »

    We want to get rid of the clock string from platform data entirely,
    depending on the clkdev-based clock lookup to do the right thing for us
    instead.

    This converts all of the SH drivers to request their associated function
    clocks directly, and if there is no match for that then we fall back on
    the legacy lookup while warning about it. After all of the outstanding
    CPUs have been converted to clkdev lookups the clock string will be
    killed off completely.

    Signed-off-by: Paul Mundt

    Paul Mundt
     

10 Mar, 2010

1 commit

02 Mar, 2010

1 commit

25 Feb, 2010

1 commit

  • da64c2a8d   clocksource: Fix up a registration/IRQ race in the sh drivers. ... Browse Code »

    All of the SH clocksource drivers follow the scheme that the IRQ is setup
    prior to registering the clockevent. The interrupt handler in the
    clockevent cases looks to the event handler function pointer being filled
    in by the registration code, permitting us to get in to situations where
    asserted IRQs step in to the handler before registration has had a chance
    to complete and hitting a NULL pointer deref.

    In practice this is not an issue for most platforms, but some of them
    with fairly special loaders (or that are chain-loading from another
    kernel) may enter in to this situation. This fixes up the oops reported
    by Rafael on hp6xx.

    Reported-and-tested-by: Rafael Ignacio Zurita
    Cc: stable@kernel.org
    Signed-off-by: Paul Mundt

    Paul Mundt
     

05 Feb, 2010

1 commit

  • c81628848   clocksource: start CMT at clocksource resume ... Browse Code »

    Add code to start the CMT timer on clocksource resume. While at it handle
    the suspend case as well. Remove the platform device specific suspend
    calls.

    This makes sure the timer is started during sysdev_resume(). Without this
    patch the clocksource may be read as suspended, this after sysdev resume
    but before platform device resume.

    Signed-off-by: Magnus Damm
    Cc: john stultz
    Cc: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Thomas Gleixner

    Magnus Damm
     

15 Aug, 2009

1 commit

  • f6431732f   sh: CMT suspend/resume ... Browse Code »

    This patch updates the SuperH CMT driver with suspend and resume
    callbacks for the suspend-to-ram case. This patch stops the CMT
    channel at suspend time to avoid unwanted wake up events.

    Signed-off-by: Magnus Damm
    Signed-off-by: Paul Mundt

    Magnus Damm
     

17 Jun, 2009

1 commit

  • be890a1a9   sh: turn off irqs when disabling CMT/TMU timers ... Browse Code »

    Modify the CMT and TMU drivers to disable interrupts when
    disabling the timer. Only using start/stop bits is not
    enough.

    This fixes a bootup hang on Migo-R when the CMT is replaced
    by TMU for clockevents but the CMT keeps on delivering irqs
    even though the timer start bit is off.

    Signed-off-by: Magnus Damm
    Signed-off-by: Paul Mundt

    Magnus Damm
     

14 Jun, 2009

1 commit

03 May, 2009

2 commits

30 Apr, 2009

1 commit

28 Apr, 2009

2 commits

  • 8e0b84294   sh: setup timers in late_time_init() ... Browse Code »

    This patch moves the SuperH timer setup code from time_init()
    to late_time_init(). Good things about this change:
    - interrupts: they are enabled at late_time_init()
    - mm: regular kmalloc() can be used at late_time_init()

    Together with moving to late_time_init() this patch changes
    the sh_cmt driver to always allocate with kmalloc(). This
    simplifies the code a bit and also fixes section mismatches.

    Signed-off-by: Magnus Damm
    Signed-off-by: Paul Mundt

    Magnus Damm
     
  • 5b644c7a2   clocksource: improve sh_cmt clocksource overflow handling ... Browse Code »

    This patch improves the sh_cmt clocksource handling.

    Currently the counter value is ignored in the case of
    overflow. With this patch the overflow flag is read
    before and after reading the counter, removing any
    counter value and overflow flag mismatch issues.

    Signed-off-by: Magnus Damm
    Signed-off-by: Paul Mundt

    Magnus Damm
     

22 Apr, 2009

1 commit

19 Apr, 2009

1 commit

02 Apr, 2009

1 commit

29 Jan, 2009

1 commit

  • 3fb1b6ad0   sh: CMT clockevent platform driver ... Browse Code »

    SuperH CMT clockevent driver.

    Both 16-bit and 32-bit CMT versions are supported, but only 32-bit
    is tested. This driver contains support for both clockevents and
    clocksources, but no unregistration is supported at this point.

    Works fine as clock source and/or event in periodic or oneshot mode.
    Tested on sh7722 and sh7723, but should work with any cpu/architecture.

    This version is lacking clocksource and early platform driver support
    for now - this to minimize the amount of dependencies.

    Signed-off-by: Magnus Damm
    Signed-off-by: Paul Mundt

    Magnus Damm