Eric Lee / smarc-fsl-linux-kernel

12 Dec, 2006

21 commits

09 Dec, 2006

3 commits

  • 5b3e1a85c   [PATCH] Generic ioremap_page_range: sh conversion ... Browse Code »

    Convert SH to use generic ioremap_page_range()

    Signed-off-by: Haavard Skinnemoen
    Signed-off-by: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Haavard Skinnemoen
     
  • f0d1b0b30   [PATCH] LOG2: Implement a general integer log2 facility in the kernel ... Browse Code »

    This facility provides three entry points:

    ilog2() Log base 2 of unsigned long
    ilog2_u32() Log base 2 of u32
    ilog2_u64() Log base 2 of u64

    These facilities can either be used inside functions on dynamic data:

    int do_something(long q)
    {
    ...;
    y = ilog2(x)
    ...;
    }

    Or can be used to statically initialise global variables with constant values:

    unsigned n = ilog2(27);

    When performing static initialisation, the compiler will report "error:
    initializer element is not constant" if asked to take a log of zero or of
    something not reducible to a constant. They treat negative numbers as
    unsigned.

    When not dealing with a constant, they fall back to using fls() which permits
    them to use arch-specific log calculation instructions - such as BSR on
    x86/x86_64 or SCAN on FRV - if available.

    [akpm@osdl.org: MMC fix]
    Signed-off-by: David Howells
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Herbert Xu
    Cc: David Howells
    Cc: Wojtek Kaniewski
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     
  • c943c4b49   [PATCH] struct path: convert sh ... Browse Code »

    Signed-off-by: Josef Sipek
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Josef Sipek
     

08 Dec, 2006

6 commits

  • 19e5d9c0d   [PATCH] initrd: remove unused false condition for initrd_start ... Browse Code »

    After LOADER_TYPE && INITRD_START are true, the short if-condition
    for INITRD_START can never be false.

    Remove unused code from the else condition.

    Signed-off-by: Henry Nestler
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Henry Nestler
     
  • 4cf303487   [PATCH] Export pm_suspend for the shared APM emulation ... Browse Code »

    The new shared APM emulation just like its ARM and MIPS predecessors uses
    pm_suspend() which was only exported on SH. Move export to close to it's
    definition where it really should be anyway.

    Signed-off-by: Ralf Baechle
    Cc: Russell King
    Cc: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ralf Baechle
     
  • 7dfb71030   [PATCH] Add include/linux/freezer.h and move definitions from sched.h ... Browse Code »

    Move process freezing functions from include/linux/sched.h to freezer.h, so
    that modifications to the freezer or the kernel configuration don't require
    recompiling just about everything.

    [akpm@osdl.org: fix ueagle driver]
    Signed-off-by: Nigel Cunningham
    Cc: "Rafael J. Wysocki"
    Cc: Pavel Machek
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nigel Cunningham
     
  • 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
     
  • e94b17660   [PATCH] slab: remove SLAB_KERNEL ... Browse Code »

    SLAB_KERNEL is an alias of GFP_KERNEL.

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

    Christoph Lameter
     
  • 39dde65c9   [PATCH] shared page table for hugetlb page ... Browse Code »
    44

    Following up with the work on shared page table done by Dave McCracken. This
    set of patch target shared page table for hugetlb memory only.

    The shared page table is particular useful in the situation of large number of
    independent processes sharing large shared memory segments. In the normal
    page case, the amount of memory saved from process' page table is quite
    significant. For hugetlb, the saving on page table memory is not the primary
    objective (as hugetlb itself already cuts down page table overhead
    significantly), instead, the purpose of using shared page table on hugetlb is
    to allow faster TLB refill and smaller cache pollution upon TLB miss.

    With PT sharing, pte entries are shared among hundreds of processes, the cache
    consumption used by all the page table is smaller and in return, application
    gets much higher cache hit ratio. One other effect is that cache hit ratio
    with hardware page walker hitting on pte in cache will be higher and this
    helps to reduce tlb miss latency. These two effects contribute to higher
    application performance.

    Signed-off-by: Ken Chen
    Acked-by: Hugh Dickins
    Cc: Dave McCracken
    Cc: William Lee Irwin III
    Cc: "Luck, Tony"
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: David Gibson
    Cc: Adam Litke
    Cc: Paul Mundt
    Cc: "David S. Miller"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Chen, Kenneth W
     

06 Dec, 2006

10 commits