Eric Lee / smarc-fsl-linux-kernel

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
     

25 Mar, 2009

1 commit

17 Oct, 2007

2 commits

  • 44a2db43e   lk201: remove obsolete driver ... Browse Code »

    Remove the old-fashioned lk201 driver under drivers/tc/ that used to be
    used by the old dz.c and zs.c drivers, which is now orphan code referred to
    from nowhere and does not build anymore. A modern replacement is available
    as drivers/input/keyboard/lkkbd.c.

    There are no plans to do anything about this piece of code and it does not
    fit anywhere anymore, so it is not just a matter of maintenance or the lack
    of. There are still some bits that might be added to the new lkkbd.c
    driver based on the old code, and the embedded hardware documentation which
    is otherwise quite hard to get hold of might be useful to keep too. Both
    of these can be done separately though. RIP.

    Signed-off-by: Maciej W. Rozycki
    Acked-by: Ralf Baechle
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Maciej W. Rozycki
     
  • 04c719765   unicode diacritics support ... Browse Code »
    44

    There have been issues with non-latin1 diacritics and unicode.
    http://bugzilla.kernel.org/show_bug.cgi?id=7746

    Git 759448f459234bfcf34b82471f0dba77a9aca498 `Kernel utf-8 handling'
    partly resolved it by adding conversion between diacritics and
    unicode. The patch below goes further by just turning diacritics into
    unicode, hence providing better future support. The kbd support can be
    fetched from
    http://bugzilla.kernel.org/attachment.cgi?id=12313

    This was tested in all of latin1, latin9, latin2 and unicode with french
    and czech dead keys.

    Turn the kernel accent_table into unicode, and extend ioctls KDGKBDIACR
    and KDSKBDIACR into their equivalents KDGKBDIACRUC and KDSKBDIACR.

    New function int conv_uni_to_8bit(u32 uni) for converting unicode into 8bit
    _input_. No, we don't want to store the translation, as it is potentially
    sparse and large.

    Signed-off-by: Samuel Thibault
    Cc: Jan Engelhardt
    Cc: "Antonino A. Daplas"
    Cc: David Woodhouse
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Samuel Thibault
     

18 Jul, 2007

1 commit

  • 8b4a40809   zs: move to the serial subsystem ... Browse Code »

    This is a reimplementation of the zs driver for the serial subsystem. Any
    resemblance to the old driver is purely coincidential. ;-) I do hope I got
    the handling of modem lines right -- better do not tackle me about the
    issue unless you feel too good...

    Any users of the old driver: please note the numbers of the serial lines
    have now been swapped, i.e. ttyS0 ttyS1 and ttyS2 ttyS3. It has
    to do with the modem lines mentioned above; basically the port A in a given
    chip has to be initialised before the port B if you want to use the latter
    as the serial console (which is usually the case), as operations on modem
    lines of the serial line associated with the port B access both ports (see
    the comment at the top of the driver for the details of wiring used).
    Please update your scripts.

    This is also the reason each SCC now requests an IRQ once only (as seen in
    "/proc/interrupts") -- the handler takes care of both ports at once as the
    line associated with the port B has to take status update interrupts from
    both ports (and yet the line of the port A takes its own for itself too).
    The old driver never got it right...

    Signed-off-by: Maciej W. Rozycki
    Cc: Ralf Baechle
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Maciej W. Rozycki
     

13 Jul, 2007

2 commits

11 Jul, 2007

1 commit

  • bf74b9647   [MIPS] DEC: Fix modpost warning. ... Browse Code »

    LD vmlinux
    SYSMAP System.map
    SYSMAP .tmp_System.map
    MODPOST vmlinux
    WARNING: drivers/built-in.o(.data+0x2480): Section mismatch: reference to .init.text: (between 'sercons' and 'ds_parms')

    Signed-off-by: Ralf Baechle

    Ralf Baechle
     

09 Jun, 2007

1 commit

  • a17627ef8   potential parse error in ifdef part 3 ... Browse Code »

    Fix various bits of obviously-busted code which we're not happening to
    compile, due to ifdefs.

    Signed-off-by: Yoann Padioleau
    Cc: Andi Kleen
    Cc: Paul Mackerras
    Acked-by: Paul Mundt
    Cc: Jens Axboe
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yoann Padioleau
     

05 Apr, 2007

1 commit

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
     

12 Feb, 2007

1 commit

  • b963a8441   [PATCH] Char: tty_wakeup cleanup ... Browse Code »

    tty_wakeup cleanup

    - remove wake_up_interruptible(&tty->write_wait) surrounding
    tty_wakup(tty);
    - substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);

    Signed-off-by: Jiri Slaby
    Cc: Alan Cox
    Acked-by: Tilman Schmidt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jiri Slaby
     

10 Feb, 2007

2 commits

  • 56a47da1b   [TC] MIPS: TURBOchannel resources off-by-one fix ... Browse Code »

    Fix resource reservation of TURBOchannel areas, where the end is one byte
    too far.

    Signed-off-by: Maciej W. Rozycki
    Signed-off-by: Andrew Morton
    Signed-off-by: Ralf Baechle

    Maciej W. Rozycki
     
  • b454cc663   [TC] MIPS: TURBOchannel update to the driver model ... Browse Code »

    This is a set of changes to convert support for the TURBOchannel bus to the
    driver model. It implements the usual set of calls similar to what other bus
    drivers have: tc_register_driver(), tc_unregister_driver(), etc. All the
    platform-specific bits have been removed and headers from asm-mips/dec/ have
    been merged into linux/tc.h, which should be included by drivers.

    Signed-off-by: Maciej W. Rozycki
    Signed-off-by: Andrew Morton
    Signed-off-by: Ralf Baechle

    Maciej W. Rozycki
     

09 Dec, 2006

1 commit

  • 606d099cd   [PATCH] tty: switch to ktermios ... Browse Code »

    This is the grungy swap all the occurrences in the right places patch that
    goes with the updates. At this point we have the same functionality as
    before (except that sgttyb() returns speeds not zero) and are ready to
    begin turning new stuff on providing nobody reports lots of bugs

    If you are a tty driver author converting an out of tree driver the only
    impact should be termios->ktermios name changes for the speed/property
    setting functions from your upper layers.

    If you are implementing your own TCGETS function before then your driver
    was broken already and its about to get a whole lot more painful for you so
    please fix it 8)

    Also fill in c_ispeed/ospeed on init for most devices, although the current
    code will do this for you anyway but I'd like eventually to lose that extra
    paranoia

    [akpm@osdl.org: bluetooth fix]
    [mp3@de.ibm.com: sclp fix]
    [mp3@de.ibm.com: warning fix for tty3270]
    [hugh@veritas.com: fix tty_ioctl powerpc build]
    [jdike@addtoit.com: uml: fix ->set_termios declaration]
    Signed-off-by: Alan Cox
    Signed-off-by: Martin Peschke
    Acked-by: Peter Oberparleiter
    Cc: Cornelia Huck
    Signed-off-by: Hugh Dickins
    Signed-off-by: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     

08 Oct, 2006

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

02 Oct, 2006

1 commit

  • b68e31d0e   [PATCH] const struct tty_operations ... Browse Code »

    As part of an SMP cleanliness pass over UML, I consted a bunch of
    structures in order to not have to document their locking. One of these
    structures was a struct tty_operations. In order to const it in UML
    without introducing compiler complaints, the declaration of
    tty_set_operations needs to be changed, and then all of its callers need to
    be fixed.

    This patch declares all struct tty_operations in the tree as const. In all
    cases, they are static and used only as input to tty_set_operations. As an
    extra check, I ran an i386 allyesconfig build which produced no extra
    warnings.

    53 drivers are affected. I checked the history of a bunch of them, and in
    most cases, there have been only a handful of maintenance changes in the
    last six months. serial_core.c was the busiest one that I looked at.

    Signed-off-by: Jeff Dike
    Acked-by: Alan Cox
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

27 Jun, 2006

2 commits

23 Mar, 2006

1 commit

  • 41c28ff16   [PATCH] kill _INLINE_ ... Browse Code »

    This patch removes all occurances of _INLINE_ in the kernel.

    With the exception of tty_flip.h, I've simply removed the inline's since
    gcc should know best which functions to be inlined.

    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     

08 Feb, 2006

1 commit

18 Nov, 2005

1 commit

08 Nov, 2005

1 commit

30 Oct, 2005

4 commits

13 Sep, 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