Eric Lee / smarc-fsl-linux-kernel

17 Apr, 2008

3 commits

  • 64ac24e73   Generic semaphore implementation ... Browse Code »
    46

    Semaphores are no longer performance-critical, so a generic C
    implementation is better for maintainability, debuggability and
    extensibility. Thanks to Peter Zijlstra for fixing the lockdep
    warning. Thanks to Harvey Harrison for pointing out that the
    unlikely() was unnecessary.

    Signed-off-by: Matthew Wilcox
    Acked-by: Ingo Molnar

    Matthew Wilcox
     
  • b4dcaea36   Pb1200/DBAu1200: fix bad IDE resource size ... Browse Code »

    The header files for the Pb1200/DBAu1200 boards have wrong definition for the
    IDE interface's decoded range length -- it should be 512 bytes according to
    what the IDE driver does. In addition, the IDE platform device claims 1 byte
    too many for its memory resource -- fix the platform code and the IDE driver
    in accordance.

    Signed-off-by: Sergei Shtylyov
    Cc: Ralf Baechle
    Signed-off-by: Bartlomiej Zolnierkiewicz

    Sergei Shtylyov
     
  • 09a77441f   Au1200: kill IDE driver function prototypes ... Browse Code »

    Fix these warnings emitted when compiling drivers/ide/mips/au1xxx-ide.c:

    include/asm/mach-au1x00/au1xxx_ide.h:137: warning: 'auide_tune_drive' declared
    `static' but never defined
    include/asm/mach-au1x00/au1xxx_ide.h:138: warning: 'auide_tune_chipset' declared
    `static' but never defined

    by wiping out the whole "function prototyping" section from the header file
    as it mostly declared functions that are
    already dead in the IDE driver; move the only useful prototype into the driver.

    Signed-off-by: Sergei Shtylyov
    Cc: Ralf Baechle
    Signed-off-by: Bartlomiej Zolnierkiewicz

    Sergei Shtylyov
     

08 Apr, 2008

1 commit

05 Apr, 2008

2 commits

03 Apr, 2008

1 commit

  • dd135ebbd   kvm: provide kvm.h for all architecture: fixes headers_install ... Browse Code »

    Currently include/linux/kvm.h is not considered by make headers_install,
    because Kbuild cannot handle " unifdef-$(CONFIG_FOO) += foo.h. This problem
    was introduced by

    commit fb56dbb31c4738a3918db81fd24da732ce3b4ae6
    Author: Avi Kivity
    Date: Sun Dec 2 10:50:06 2007 +0200

    KVM: Export include/linux/kvm.h only if $ARCH actually supports KVM

    Currently, make headers_check barfs due to , which
    includes, not existing. Rather than add a zillion s, export kvm.
    only if the arch actually supports it.

    Signed-off-by: Avi Kivity

    which makes this an 2.6.25 regression.

    One way of solving the issue is to enhance Kbuild, but Avi and David conviced
    me, that changing headers_install is not the way to go. This patch changes
    the definition for linux/kvm.h to unifdef-y.

    If  unifdef-y is used for linux/kvm.h "make headers_check" will fail on all
    architectures without asm/kvm.h. Therefore, this patch also provides
    asm/kvm.h on all architectures.

    Signed-off-by: Christian Borntraeger
    Acked-by: Avi Kivity
    Cc: Sam Ravnborg
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christian Borntraeger
     

01 Apr, 2008

1 commit

  • 758e285fa   [MIPS] Alchemy: work around clock misdetection on early Au1000 ... Browse Code »

    Work around the CPU clock miscalculation on Au1000DA/HA/HB due the
    sys_cpupll register being write-only, i.e. actually do what the comment
    before cal_r4off() function advertised for years but the code failed at.
    This is achieved by just giving user a chance to define the clock
    explicitly in the board config. via CONFIG_SOC_AU1000_FREQUENCY option,
    defaulting to 396 MHz if the option is not given...

    The patch is based on the AMD's big unpublished patch, the issue seems to
    be an undocumented errata (or feature :-)...

    Signed-off-by: Sergei Shtylyov
    Signed-off-by: Ralf Baechle

    Sergei Shtylyov
     

12 Mar, 2008

6 commits

25 Feb, 2008

1 commit

20 Feb, 2008

4 commits

  • b991b590d   [MIPS] RM: fix EISA=n compilation ... Browse Code »

    This patch fixes the following build error with CONFIG_EISA=n caused by
    commit 231a35d37293ab88d325a9cb94e5474c156282c0:

    ...
    LD .tmp_vmlinux1
    arch/mips/sni/built-in.o: In function `snirm_a20r_setup_devinit':
    a20r.c:(.init.text+0x42c): undefined reference to `sni_eisa_root_init'
    a20r.c:(.init.text+0x42c): relocation truncated to fit: R_MIPS_26 against `sni_eisa_root_init'
    arch/mips/sni/built-in.o: In function `snirm_setup_devinit':
    rm200.c:(.init.text+0x52c): undefined reference to `sni_eisa_root_init'
    rm200.c:(.init.text+0x52c): relocation truncated to fit: R_MIPS_26 against `sni_eisa_root_init'
    make[1]: *** [.tmp_vmlinux1] Error 1

    Signed-off-by: Adrian Bunk
    Acked-by: Thomas Bogendoerfer
    Signed-off-by: Ralf Baechle

    Adrian Bunk
     
  • dc9175be7   [MIPS] Qemu: finish platform removal ... Browse Code »

    Two files were omitted from the recent removal of the qemu platform.

    Signed-off-by: Adrian Bunk
    Signed-off-by: Ralf Baechle

    Adrian Bunk
     
  • 6783fe625   [MIPS] Wire up the timerfd_*() o32 system calls ... Browse Code »

    This patch enables the system calls timerfd_create(), timerfd_settime()
    and timerfd_gettime() for MIPS architecture.

    Please see the following Bugzilla entry for more details:

    http://bugzilla.kernel.org/show_bug.cgi?id=10038

    This was tested using a Malta 4Kc board in both little-endian and
    big-endian modes. The unit test program is available from the URL
    above.

    Signed-off-by: Dmitri Vorobiev

    [Ralf: Added N64, N32 and O32 bits on 64-bit kernels.]
    Signed-off-by: Ralf Baechle

    Dmitri Vorobiev
     
  • eaf7943cc   [MIPS] IP27: Add missing ~ in DMA code. ... Browse Code »

    Harmless since this function is not being called on I/O coherent systems
    such as IP27.

    Signed-off-by: Ralf Baechle

    Ralf Baechle
     

09 Feb, 2008

3 commits

  • 2f569afd9   CONFIG_HIGHPTE vs. sub-page page tables. ... Browse Code »

    Background: I've implemented 1K/2K page tables for s390. These sub-page
    page tables are required to properly support the s390 virtualization
    instruction with KVM. The SIE instruction requires that the page tables
    have 256 page table entries (pte) followed by 256 page status table entries
    (pgste). The pgstes are only required if the process is using the SIE
    instruction. The pgstes are updated by the hardware and by the hypervisor
    for a number of reasons, one of them is dirty and reference bit tracking.
    To avoid wasting memory the standard pte table allocation should return
    1K/2K (31/64 bit) and 2K/4K if the process is using SIE.

    Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means
    the s390 version for pte_alloc_one cannot return a pointer to a struct
    page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one
    cannot return a pointer to a pte either, since that would require more than
    32 bit for the return value of pte_alloc_one (and the pte * would not be
    accessible since its not kmapped).

    Solution: The only solution I found to this dilemma is a new typedef: a
    pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a
    later patch. For everybody else it will be a (struct page *). The
    additional problem with the initialization of the ptl lock and the
    NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and
    a destructor pgtable_page_dtor. The page table allocation and free
    functions need to call these two whenever a page table page is allocated or
    freed. pmd_populate will get a pgtable_t instead of a struct page pointer.
    To get the pgtable_t back from a pmd entry that has been installed with
    pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page
    call in free_pte_range and apply_to_pte_range.

    Signed-off-by: Martin Schwidefsky
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Martin Schwidefsky
     
  • 531d7d425   asm-*/posix_types.h: scrub __GLIBC__ ... Browse Code »

    Some arches (like alpha and ia64) already have a clean posix_types.h header.
    This brings all the others in line by removing all references to __GLIBC__
    (and some undocumented __USE_ALL).

    Signed-off-by: Mike Frysinger
    Acked-by: Ingo Molnar
    Cc: Ulrich Drepper
    Cc: Roland McGrath
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mike Frysinger
     
  • 922a70d32   aout: move STACK_TOP[_MAX] to asm/processor.h ... Browse Code »

    Move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're
    required whether or not A.OUT format is available.

    Signed-off-by: David Howells
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     

08 Feb, 2008

3 commits

  • 3b96a56d3   Add cmpxchg64 and cmpxchg64_local to mips ... Browse Code »

    Make sure that at least cmpxchg64_local is available on all architectures to use
    for unsigned long long values.

    Signed-off-by: Mathieu Desnoyers
    Cc: Ralf Baechle
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mathieu Desnoyers
     
  • 6e16d89bc   Sanitize the type of struct user.u_ar0 ... Browse Code »

    struct user.u_ar0 is defined to contain a pointer offset on all
    architectures in which it is defined (all architectures which define an
    a.out format except SPARC.) However, it has a pointer type in the headers,
    which is pointless -- is not exported to userspace, and it
    just makes the code messy.

    Redefine the field as "unsigned long" (which is the same size as a pointer
    on all Linux architectures) and change the setting code to user offsetof()
    instead of hand-coded arithmetic.

    Cc: Linux Arch Mailing List
    Cc: Bryan Wu
    Cc: Roman Zippel
    Cc: Thomas Gleixner
    Cc: Ingo Molnar
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Lennert Buytenhek
    Cc: Håvard Skinnemoen
    Cc: Mikael Starvik
    Cc: Yoshinori Sato
    Cc: Tony Luck
    Cc: Hirokazu Takata
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Paul Mundt
    Signed-off-by: H. Peter Anvin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    H. Peter Anvin
     
  • 516c25a86   Cleanup asm/{elf,page,user}.h: #ifdef __KERNEL__ is no longer needed ... Browse Code »

    asm/elf.h, asm/page.h and asm/user.h don't export to userspace now, so we can
    drop #ifdef __KERNEL__ for them.

    [k.shutemov@gmail.com: remove #ifdef __KERNEL_]
    Signed-off-by: Kirill A. Shutemov
    Reviewed-by: David Woodhouse
    Cc:
    Signed-off-by: Kirill A. Shutemov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

06 Feb, 2008

2 commits

  • 5e5419734   add mm argument to pte/pmd/pud/pgd_free ... Browse Code »

    (with Martin Schwidefsky )

    The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as
    first argument. The free functions do not get the mm_struct argument. This
    is 1) asymmetrical and 2) to do mm related page table allocations the mm
    argument is needed on the free function as well.

    [kamalesh@linux.vnet.ibm.com: i386 fix]
    [akpm@linux-foundation.org: coding-syle fixes]
    Signed-off-by: Benjamin Herrenschmidt
    Signed-off-by: Martin Schwidefsky
    Cc:
    Signed-off-by: Kamalesh Babulal
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Benjamin Herrenschmidt
     
  • 824552574   maps4: rework TASK_SIZE macros ... Browse Code »

    The following replaces the earlier patches sent. It should address
    David Rientjes's comments, and has been compile tested on all the
    architectures that it touches, save for parisc.

    For the /proc//pagemap code[1], we need to able to query how
    much virtual address space a particular task has. The trick is
    that we do it through /proc and can't use TASK_SIZE since it
    references "current" on some arches. The process opening the
    /proc file might be a 32-bit process opening a 64-bit process's
    pagemap file.

    x86_64 already has a TASK_SIZE_OF() macro:

    #define TASK_SIZE_OF(child) ((test_tsk_thread_flag(child, TIF_IA32)) ? IA32_PAGE_OFFSET : TASK_SIZE64)

    I'd like to have that for other architectures. So, add it
    for all the architectures that actually use "current" in
    their TASK_SIZE. For the others, just add a quick #define
    in sched.h to use plain old TASK_SIZE.

    1. http://www.linuxworld.com/news/2007/042407-kernel.html

    - MIPS portion from Ralf Baechle

    [akpm@linux-foundation.org: fix mips build]
    Signed-off-by: Dave Hansen
    Signed-off-by: Ralf Baechle
    Signed-off-by: Matt Mackall
    Acked-by: David Rientjes
    Cc: Dave Hansen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dave Hansen
     

03 Feb, 2008

2 commits

02 Feb, 2008

1 commit

  • 5df37c34a   au1xxx-ide: use hwif->dev ... Browse Code »

    * Setup hwif->dev in au_ide_probe().

    * Use hwif->dev instead of ahwif->dev in auide_build_sglist(),
    auide_build_dmatable(), auide_dma_end() and auide_ddma_init().

    * Remove no longer needed 'dev' field from _auide_hwif type.

    Signed-off-by: Bartlomiej Zolnierkiewicz

    Bartlomiej Zolnierkiewicz
     

01 Feb, 2008

1 commit

  • 4a19ec580   [NET]: Introducing socket mark socket option. ... Browse Code »

    A userspace program may wish to set the mark for each packets its send
    without using the netfilter MARK target. Changing the mark can be used
    for mark based routing without netfilter or for packet filtering.

    It requires CAP_NET_ADMIN capability.

    Signed-off-by: Laszlo Attila Toth
    Acked-by: Patrick McHardy
    Signed-off-by: David S. Miller

    Laszlo Attila Toth
     

29 Jan, 2008

9 commits