Eric Lee / smarc-ti-linux-kernel

20 Jul, 2007

1 commit

  • 83c54070e   mm: fault feedback #2 ... Browse Code »

    This patch completes Linus's wish that the fault return codes be made into
    bit flags, which I agree makes everything nicer. This requires requires
    all handle_mm_fault callers to be modified (possibly the modifications
    should go further and do things like fault accounting in handle_mm_fault --
    however that would be for another patch).

    [akpm@linux-foundation.org: fix alpha build]
    [akpm@linux-foundation.org: fix s390 build]
    [akpm@linux-foundation.org: fix sparc build]
    [akpm@linux-foundation.org: fix sparc64 build]
    [akpm@linux-foundation.org: fix ia64 build]
    Signed-off-by: Nick Piggin
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Bryan Wu
    Cc: Mikael Starvik
    Cc: David Howells
    Cc: Yoshinori Sato
    Cc: "Luck, Tony"
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Cc: Greg Ungerer
    Cc: Matthew Wilcox
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    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
    Acked-by: Kyle McMartin
    Acked-by: Haavard Skinnemoen
    Acked-by: Ralf Baechle
    Acked-by: Andi Kleen
    Signed-off-by: Andrew Morton
    [ Still apparently needs some ARM and PPC loving - Linus ]
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

10 May, 2007

1 commit

09 May, 2007

2 commits

  • 5616df204   FRV: Miscellaneous fixes ... Browse Code »

    Miscellaneous fixes to bring FRV up to date:

    (1) Copy the new syscall numbers from i386 to asm-frv/unistd.h and fill out
    the syscall table in entry.S too.

    (2) Mark __frv_uart0 and __frv_uart1 __pminitdata rather than __initdata so
    that determine_clocks() can access them when CONFIG_PM=y.

    (3) Make arch/frv/mm/elf-fdpic.c include asm/mman.h so that MAP_FIXED is
    available (fixes commit 2fd3bebaad9da3b3b99c46a3389099424bf7ee35).

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

    David Howells
     
  • 0e6b9c98b   use SLAB_PANIC flag cleanup ... Browse Code »

    Use SLAB_PANIC and delete duplicated panic().

    Signed-off-by: Akinobu Mita
    Cc: Ian Molton
    Cc: David Howells
    Cc: Andi Kleen
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

08 May, 2007

1 commit

02 Mar, 2007

1 commit

  • fa6427542   [PATCH] FRV: No ZONE_DMA ... Browse Code »

    FRV does not require a ZONE_DMA, so all DMA'able pages that aren't highmem
    should be in ZONE_NORMAL.

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

    David Howells
     

09 Dec, 2006

1 commit

08 Dec, 2006

2 commits

  • e18b890bb   [PATCH] slab: remove kmem_cache_t ... Browse Code »

    Replace all uses of kmem_cache_t with struct kmem_cache.

    The patch was generated using the following script:

    #!/bin/sh
    #
    # Replace one string by another in all the kernel sources.
    #

    set -e

    for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do
    quilt add $file
    sed -e "1,\$s/$1/$2/g" $file >/tmp/$$
    mv /tmp/$$ $file
    quilt refresh
    done

    The script was run like this

    sh replace kmem_cache_t "struct kmem_cache"

    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     
  • 6edaf68a8   [PATCH] mm: arch do_page_fault() vs in_atomic() ... Browse Code »

    In light of the recent pagefault and filemap_copy_from_user work I've gone
    through all the arch pagefault handlers to make sure the inc_preempt_count()
    'feature' works as expected.

    Several sections of code (including the new filemap_copy_from_user) rely on
    the fact that faults do not take locks under increased preempt count.

    arch/x86_64 - good
    arch/powerpc - good
    arch/cris - fixed
    arch/i386 - good
    arch/parisc - fixed
    arch/sh - good
    arch/sparc - good
    arch/s390 - good
    arch/m68k - fixed
    arch/ppc - good
    arch/alpha - fixed
    arch/mips - good
    arch/sparc64 - good
    arch/ia64 - good
    arch/arm - fixed
    arch/um - good
    arch/avr32 - good
    arch/h8300 - NA
    arch/m32r - good
    arch/v850 - good
    arch/frv - fixed
    arch/m68knommu - NA
    arch/arm26 - fixed
    arch/sh64 - fixed
    arch/xtensa - good

    Signed-off-by: Peter Zijlstra
    Acked-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Peter Zijlstra
     

26 Sep, 2006

1 commit

01 Jul, 2006

1 commit

23 Jun, 2006

1 commit

27 Mar, 2006

1 commit

  • 0f7217f4a   [PATCH] frv: remove unnesesary "&" ... Browse Code »

    Fix warning messages triggered by bitops code consolidation patches.
    cxn_bitmap is the array of unsigned long. '&' is unnesesary for the argument
    of *_bit() routins.

    Signed-off-by: Akinobu Mita
    Acked-by: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

22 Mar, 2006

2 commits

  • 7835e98b2   [PATCH] remove set_page_count() outside mm/ ... Browse Code »

    set_page_count usage outside mm/ is limited to setting the refcount to 1.
    Remove set_page_count from outside mm/, and replace those users with
    init_page_count() and set_page_refcounted().

    This allows more debug checking, and tighter control on how code is allowed
    to play around with page->_count.

    Signed-off-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     
  • 8dfcc9ba2   [PATCH] mm: split highorder pages ... Browse Code »

    Have an explicit mm call to split higher order pages into individual pages.
    Should help to avoid bugs and be more explicit about the code's intention.

    Signed-off-by: Nick Piggin
    Cc: Russell King
    Cc: David Howells
    Cc: Ralf Baechle
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mundt
    Cc: "David S. Miller"
    Cc: Chris Zankel
    Signed-off-by: Yoichi Yuasa
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

15 Feb, 2006

1 commit

  • 68f624fc8   [PATCH] FRV: Miscellaneous fixes ... Browse Code »

    Make various alterations and fixes to the FRV arch:

    (1) Resyncs the FRV system call collection with the i386 arch.

    (2) Discards __iounmap() as it's not used.

    (3) Fixes the use of the SWAP/SWAPI instruction to get the arguments the right
    way around in atomic.h, and also to get the asm constraints correct.

    (4) Moves copy_to/from_user_page() to asm/cacheflush.h to be consistent with
    other archs.

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

    David Howells
     

09 Jan, 2006

2 commits

29 Nov, 2005

1 commit

  • 8080f2312   [PATCH] FRV: Make the FRV arch work again ... Browse Code »

    The attached patch implements a bunch of small changes to the FRV arch to
    make it work again.

    It deals with the following problems:

    (1) SEM_DEBUG should be SEMAPHORE_DEBUG.

    (2) The argument list to pcibios_penalize_isa_irq() has changed.

    (3) CONFIG_HIGHMEM can't be used directly in #if as it may not be defined.

    (4) page->private is no longer directly accessible.

    (5) linux/hardirq.h assumes asm/hardirq.h will include linux/irq.h

    (6) The IDE MMIO access functions are given pointers, not integers, and so
    get type casting errors.

    (7) __pa() is passed an explicit u64 type in drivers/char/mem.c, but that
    can't be cast directly to a pointer on a 32-bit platform.

    (8) SEMAPHORE_DEBUG should not be contingent on WAITQUEUE_DEBUG as that no
    longer exists.

    (9) PREEMPT_ACTIVE is too low a value.

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

    David Howells
     

30 Oct, 2005

2 commits

  • 4c21e2f24   [PATCH] mm: split page table lock ... Browse Code »

    Christoph Lameter demonstrated very poor scalability on the SGI 512-way, with
    a many-threaded application which concurrently initializes different parts of
    a large anonymous area.

    This patch corrects that, by using a separate spinlock per page table page, to
    guard the page table entries in that page, instead of using the mm's single
    page_table_lock. (But even then, page_table_lock is still used to guard page
    table allocation, and anon_vma allocation.)

    In this implementation, the spinlock is tucked inside the struct page of the
    page table page: with a BUILD_BUG_ON in case it overflows - which it would in
    the case of 32-bit PA-RISC with spinlock debugging enabled.

    Splitting the lock is not quite for free: another cacheline access. Ideally,
    I suppose we would use split ptlock only for multi-threaded processes on
    multi-cpu machines; but deciding that dynamically would have its own costs.
    So for now enable it by config, at some number of cpus - since the Kconfig
    language doesn't support inequalities, let preprocessor compare that with
    NR_CPUS. But I don't think it's worth being user-configurable: for good
    testing of both split and unsplit configs, split now at 4 cpus, and perhaps
    change that to 8 later.

    There is a benefit even for singly threaded processes: kswapd can be attacking
    one part of the mm while another part is busy faulting.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     
  • 872fec16d   [PATCH] mm: init_mm without ptlock ... Browse Code »

    First step in pushing down the page_table_lock. init_mm.page_table_lock has
    been used throughout the architectures (usually for ioremap): not to serialize
    kernel address space allocation (that's usually vmlist_lock), but because
    pud_alloc,pmd_alloc,pte_alloc_kernel expect caller holds it.

    Reverse that: don't lock or unlock init_mm.page_table_lock in any of the
    architectures; instead rely on pud_alloc,pmd_alloc,pte_alloc_kernel to take
    and drop it when allocating a new one, to check lest a racing task already
    did. Similarly no page_table_lock in vmalloc's map_vm_area.

    Some temporary ugliness in __pud_alloc and __pmd_alloc: since they also handle
    user mms, which are converted only by a later patch, for now they have to lock
    differently according to whether or not it's init_mm.

    If sources get muddled, there's a danger that an arch source taking
    init_mm.page_table_lock will be mixed with common source also taking it (or
    neither take it). So break the rules and make another change, which should
    break the build for such a mismatch: remove the redundant mm arg from
    pte_alloc_kernel (ppc64 scrapped its distinct ioremap_mm in 2.6.13).

    Exceptions: arm26 used pte_alloc_kernel on user mm, now pte_alloc_map; ia64
    used pte_alloc_map on init_mm, now pte_alloc_kernel; parisc had bad args to
    pmd_alloc and pte_alloc_kernel in unused USE_HPPA_IOREMAP code; ppc64
    map_io_page forgot to unlock on failure; ppc mmu_mapin_ram and ppc64 im_free
    took page_table_lock for no good reason.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

28 Oct, 2005

1 commit

04 Aug, 2005

1 commit

22 Jun, 2005

1 commit

  • cbe37d093   [PATCH] mm: remove PG_highmem ... Browse Code »

    Remove PG_highmem, to save a page flag. Use is_highmem() instead. It'll
    generate a little more code, but we don't use PageHigheMem() in many places.

    Signed-off-by: Badari Pulavarty
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Badari Pulavarty
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »
    212

    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