Eric Lee / smarc-fsl-linux-kernel

21 Jul, 2007

1 commit

20 Jul, 2007

1 commit

  • dd00cc486   some kmalloc/memset ->kzalloc (tree wide) ... Browse Code »

    Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

    Here is a short excerpt of the semantic patch performing
    this transformation:

    @@
    type T2;
    expression x;
    identifier f,fld;
    expression E;
    expression E1,E2;
    expression e1,e2,e3,y;
    statement S;
    @@

    x =
    - kmalloc
    + kzalloc
    (E1,E2)
    ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
    - memset((T2)x,0,E1);

    @@
    expression E1,E2,E3;
    @@

    - kzalloc(E1 * E2,E3)
    + kcalloc(E1,E2,E3)

    [akpm@linux-foundation.org: get kcalloc args the right way around]
    Signed-off-by: Yoann Padioleau
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Acked-by: Russell King
    Cc: Bryan Wu
    Acked-by: Jiri Slaby
    Cc: Dave Airlie
    Acked-by: Roland Dreier
    Cc: Jiri Kosina
    Acked-by: Dmitry Torokhov
    Cc: Benjamin Herrenschmidt
    Acked-by: Mauro Carvalho Chehab
    Acked-by: Pierre Ossman
    Cc: Jeff Garzik
    Cc: "David S. Miller"
    Acked-by: Greg KH
    Cc: James Bottomley
    Cc: "Antonino A. Daplas"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yoann Padioleau
     

18 Jul, 2007

2 commits

  • 10a0a8d4e   Add common orderly_poweroff() ... Browse Code »

    Various pieces of code around the kernel want to be able to trigger an
    orderly poweroff. This pulls them together into a single
    implementation.

    By default the poweroff command is /sbin/poweroff, but it can be set
    via sysctl: kernel/poweroff_cmd. This is split at whitespace, so it
    can include command-line arguments.

    This patch replaces four other instances of invoking either "poweroff"
    or "shutdown -h now": two sbus drivers, and acpi thermal
    management.

    sparc64 has its own "powerd"; still need to determine whether it should
    be replaced by orderly_poweroff().

    Signed-off-by: Jeremy Fitzhardinge
    Acked-by: Len Brown
    Signed-off-by: Chris Wright
    Cc: Andrew Morton
    Cc: Randy Dunlap
    Cc: Andi Kleen
    Cc: Al Viro
    Cc: Arnd Bergmann
    Cc: David S. Miller

    Jeremy Fitzhardinge
     
  • 00d59405c   unregister_blkdev() delete redundant messages in callers ... Browse Code »

    No need to warn unregister_blkdev() failure by the callers. (The previous
    patch makes unregister_blkdev() print error message in error case)

    Signed-off-by: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

17 Jul, 2007

1 commit

  • 347e03df1   cpwatchdog build fix ... Browse Code »

    sparc64:

    drivers/sbus/char/cpwatchdog.c: In function `wd_toggleintr':
    drivers/sbus/char/cpwatchdog.c:523: error: implicit declaration of function `readb'
    drivers/sbus/char/cpwatchdog.c:533: error: implicit declaration of function `writeb'
    drivers/sbus/char/cpwatchdog.c: In function `wd_pingtimer':
    drivers/sbus/char/cpwatchdog.c:545: error: implicit declaration of function `readw'
    drivers/sbus/char/cpwatchdog.c: In function `wd_starttimer':
    drivers/sbus/char/cpwatchdog.c:584: error: implicit declaration of function `writew'
    drivers/sbus/char/cpwatchdog.c: In function `wd_init':
    drivers/sbus/char/cpwatchdog.c:767: error: implicit declaration of function `ioremap'
    drivers/sbus/char/cpwatchdog.c:767: warning: assignment makes pointer from integer without a cast
    drivers/sbus/char/cpwatchdog.c: In function `wd_cleanup':
    drivers/sbus/char/cpwatchdog.c:849: error: implicit declaration of function `iounmap'

    Cc: "David S. Miller"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

31 May, 2007

1 commit

14 May, 2007

2 commits

12 May, 2007

1 commit

09 May, 2007

2 commits

03 May, 2007

1 commit

  • 6473d160b   PCI: Cleanup the includes of <linux/pci.h> ... Browse Code »

    I noticed that many source files include while they do
    not appear to need it. Here is an attempt to clean it all up.

    In order to find all possibly affected files, I searched for all
    files including but without any other occurence of "pci"
    or "PCI". I removed the include statement from all of these, then I
    compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
    false positives manually.

    My tests covered 66% of the affected files, so there could be false
    positives remaining. Untested files are:

    arch/alpha/kernel/err_common.c
    arch/alpha/kernel/err_ev6.c
    arch/alpha/kernel/err_ev7.c
    arch/ia64/sn/kernel/huberror.c
    arch/ia64/sn/kernel/xpnet.c
    arch/m68knommu/kernel/dma.c
    arch/mips/lib/iomap.c
    arch/powerpc/platforms/pseries/ras.c
    arch/ppc/8260_io/enet.c
    arch/ppc/8260_io/fcc_enet.c
    arch/ppc/8xx_io/enet.c
    arch/ppc/syslib/ppc4xx_sgdma.c
    arch/sh64/mach-cayman/iomap.c
    arch/xtensa/kernel/xtensa_ksyms.c
    arch/xtensa/platform-iss/setup.c
    drivers/i2c/busses/i2c-at91.c
    drivers/i2c/busses/i2c-mpc.c
    drivers/media/video/saa711x.c
    drivers/misc/hdpuftrs/hdpu_cpustate.c
    drivers/misc/hdpuftrs/hdpu_nexus.c
    drivers/net/au1000_eth.c
    drivers/net/fec_8xx/fec_main.c
    drivers/net/fec_8xx/fec_mii.c
    drivers/net/fs_enet/fs_enet-main.c
    drivers/net/fs_enet/mac-fcc.c
    drivers/net/fs_enet/mac-fec.c
    drivers/net/fs_enet/mac-scc.c
    drivers/net/fs_enet/mii-bitbang.c
    drivers/net/fs_enet/mii-fec.c
    drivers/net/ibm_emac/ibm_emac_core.c
    drivers/net/lasi_82596.c
    drivers/parisc/hppb.c
    drivers/sbus/sbus.c
    drivers/video/g364fb.c
    drivers/video/platinumfb.c
    drivers/video/stifb.c
    drivers/video/valkyriefb.c
    include/asm-arm/arch-ixp4xx/dma.h
    sound/oss/au1550_ac97.c

    I would welcome test reports for these files. I am fine with removing
    the untested files from the patch if the general opinion is that these
    changes aren't safe. The tested part would still be nice to have.

    Note that this patch depends on another header fixup patch I submitted
    to LKML yesterday:
    [PATCH] scatterlist.h needs types.h
    http://lkml.org/lkml/2007/3/01/141

    Signed-off-by: Jean Delvare
    Cc: Badari Pulavarty
    Signed-off-by: Greg Kroah-Hartman

    Jean Delvare
     

26 Apr, 2007

2 commits

24 Apr, 2007

1 commit

22 Apr, 2007

1 commit

27 Feb, 2007

3 commits

18 Feb, 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
     

13 Feb, 2007

1 commit

  • 00977a59b   [PATCH] mark struct file_operations const 6 ... Browse Code »

    Many struct file_operations in the kernel can be "const". Marking them const
    moves these to the .rodata section, which avoids false sharing with potential
    dirty data. In addition it'll catch accidental writes at compile time to
    these shared resources.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     

11 Feb, 2007

1 commit

14 Dec, 2006

1 commit

  • 5cbded585   [PATCH] getting rid of all casts of k[cmz]alloc() calls ... Browse Code »

    Run this:

    #!/bin/sh
    for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
    echo "De-casting $f..."
    perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
    done

    And then go through and reinstate those cases where code is casting pointers
    to non-pointers.

    And then drop a few hunks which conflicted with outstanding work.

    Cc: Russell King , Ian Molton
    Cc: Mikael Starvik
    Cc: Yoshinori Sato
    Cc: Roman Zippel
    Cc: Geert Uytterhoeven
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Kyle McMartin
    Cc: Benjamin Herrenschmidt
    Cc: Martin Schwidefsky
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Greg KH
    Cc: Jens Axboe
    Cc: Paul Fulghum
    Cc: Alan Cox
    Cc: Karsten Keil
    Cc: Mauro Carvalho Chehab
    Cc: Jeff Garzik
    Cc: James Bottomley
    Cc: Ian Kent
    Cc: Steven French
    Cc: David Woodhouse
    Cc: Neil Brown
    Cc: Jaroslav Kysela
    Cc: Takashi Iwai
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robert P. J. Day
     

09 Dec, 2006

1 commit

27 Oct, 2006

1 commit

18 Oct, 2006

1 commit

13 Oct, 2006

1 commit

11 Oct, 2006

2 commits

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
     

04 Oct, 2006

1 commit

02 Oct, 2006

2 commits

  • 3db03b4af   [PATCH] rename the provided execve functions to kernel_execve ... Browse Code »

    Some architectures provide an execve function that does not set errno, but
    instead returns the result code directly. Rename these to kernel_execve to
    get the right semantics there. Moreover, there is no reasone for any of these
    architectures to still provide __KERNEL_SYSCALLS__ or _syscallN macros, so
    remove these right away.

    [akpm@osdl.org: build fix]
    [bunk@stusta.de: build fix]
    Signed-off-by: Arnd Bergmann
    Cc: Andi Kleen
    Acked-by: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Mikael Starvik
    Cc: David Howells
    Cc: Yoshinori Sato
    Cc: Hirokazu Takata
    Cc: Ralf Baechle
    Cc: Kyle McMartin
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Kazumoto Kojima
    Cc: Richard Curnow
    Cc: William Lee Irwin III
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Cc: Miles Bader
    Cc: Chris Zankel
    Cc: "Luck, Tony"
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Signed-off-by: Adrian Bunk
    Cc: Arnd Bergmann
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arnd Bergmann
     
  • 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
     

18 Sep, 2006

1 commit

  • b9b64e6e8   [OPENPROMIO]: Handle current_node being NULL correctly. ... Browse Code »

    If the user tries to traverse to the next node of the
    last node, we get NULL in current_node and a zero phandle
    returned. That's fine, but if the user tries to obtain
    properties in that state, we try to dereference a NULL
    pointer in the downcall to the of_*() routines.

    So protect against that.

    Signed-off-by: David S. Miller

    David S. Miller
     

22 Jul, 2006

1 commit

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

27 Jun, 2006

2 commits