Eric Lee / smarc-fsl-linux-kernel

21 Dec, 2005

2 commits

  • bb44f116a   [PATCH] fix spinlock-debugging smp_processor_id() usage ... Browse Code »

    When a spinlock debugging check hits, we print the CPU number as an
    informational thing - but there is no guarantee that preemption is off
    at that point - hence we should use raw_smp_processor_id(). Otherwise
    DEBUG_PREEMPT will print a warning.

    With this fix the warning goes away and only the spinlock-debugging info
    is printed.

    Signed-off-by: Ingo Molnar
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     
  • 7e8702334   [PATCH] Fix swiotlb pci_map_sg error handling ... Browse Code »

    The overflow checking condition in lib/swiotlb.c was wrong.
    It would first run a NULL pointer through virt_to_phys before
    testing it. Since pci_map_sg overflow is not that uncommon
    and causes data corruption (including broken file systems) when not
    properly detected I think it's better to fix it in 2.6.15.

    This affects x86-64 and IA64.

    Signed-off-by: Andi Kleen
    Signed-off-by: Linus Torvalds

    Andi Kleen
     

29 Nov, 2005

1 commit

  • 46596338a   [PATCH] fix broken lib/genalloc.c ... Browse Code »

    genalloc improperly stores the sizes of freed chunks, allocates overlapping
    memory regions, and oopses after its in-band data is overwritten.

    Signed-off-by: Chris Humbert
    Cc: Jes Sorensen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Chris Humbert
     

08 Nov, 2005

1 commit

07 Nov, 2005

2 commits

01 Nov, 2005

1 commit

31 Oct, 2005

12 commits

  • 23fd07750   Merge ../linux-2.6 by hand Browse Code »
    Paul Mackerras
     
  • 4e57b6817   [PATCH] fix missing includes ... Browse Code »

    I recently picked up my older work to remove unnecessary #includes of
    sched.h, starting from a patch by Dave Jones to not include sched.h
    from module.h. This reduces the number of indirect includes of sched.h
    by ~300. Another ~400 pointless direct includes can be removed after
    this disentangling (patch to follow later).
    However, quite a few indirect includes need to be fixed up for this.

    In order to feed the patches through -mm with as little disturbance as
    possible, I've split out the fixes I accumulated up to now (complete for
    i386 and x86_64, more archs to follow later) and post them before the real
    patch. This way this large part of the patch is kept simple with only
    adding #includes, and all hunks are independent of each other. So if any
    hunk rejects or gets in the way of other patches, just drop it. My scripts
    will pick it up again in the next round.

    Signed-off-by: Tim Schmielau
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tim Schmielau
     
  • 82da2c372   [PATCH] lib/string.c cleanup: restore useful memmove const ... Browse Code »

    A couple of (char *) casts removed in a previous cleanup patch in
    lib/string.c:memmove() were actually useful, as they suppressed a couple of
    warnings:

    assignment discards qualifiers from pointer target type

    Fix by declaring the local variable const in the first place, so casts
    aren't needed to strip the const qualifier.

    Signed-off-by: Paul Jackson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paul Jackson
     
  • a241ec65a   [PATCH] RCU torture-testing kernel module ... Browse Code »

    This patch is a rewrite of the one submitted on October 1st, using modules
    (http://marc.theaimsgroup.com/?l=linux-kernel&m=112819093522998&w=2).

    This rewrite adds a tristate CONFIG_RCU_TORTURE_TEST, which enables an
    intense torture test of the RCU infratructure. This is needed due to the
    continued changes to the RCU infrastructure to accommodate dynamic ticks,
    CPU hotplug, realtime, and so on. Most of the code is in a separate file
    that is compiled only if the CONFIG variable is set. Documentation on how
    to run the test and interpret the output is also included.

    This code has been tested on i386 and ppc64, and an earlier version of the
    code has received extensive testing on a number of architectures as part of
    the PREEMPT_RT patchset.

    Signed-off-by: "Paul E. McKenney"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paul E. McKenney
     
  • c4dd0e4c6   [PATCH] extable: remove needless declaration ... Browse Code »

    They aren't used anywhere in that file.

    Signed-off-by: Nicolas Pitre
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nicolas Pitre
     
  • 2a38bccd0   [PATCH] Kconfig help text correction for CONFIG_FRAME_POINTER ... Browse Code »

    Fix-up the CONFIG_FRAME_POINTER help text language a bit.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     
  • fb5eeeee4   [PATCH] cpusets: bitmap and mask remap operators ... Browse Code »

    In the forthcoming task migration support, a key calculation will be
    mapping cpu and node numbers from the old set to the new set while
    preserving cpuset-relative offset.

    For example, if a task and its pages on nodes 8-11 are being migrated to
    nodes 24-27, then pages on node 9 (the 2nd node in the old set) should be
    moved to node 25 (the 2nd node in the new set.)

    As with other bitmap operations, the proper way to code this is to provide
    the underlying calculation in lib/bitmap.c, and then to provide the usual
    cpumask and nodemask wrappers.

    This patch provides that. These operations are termed 'remap' operations.
    Both remapping a single bit and a set of bits is supported.

    Signed-off-by: Paul Jackson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paul Jackson
     
  • e15ae2dd3   [PATCH] Whitespace and CodingStyle cleanup for lib/idr.c ... Browse Code »

    Cleanup trailing whitespace, blank lines, CodingStyle issues etc, for
    lib/idr.c

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     
  • 850b92479   [PATCH] lib/string.c cleanup: remove pointless explicit casts ... Browse Code »

    The first two hunks of the patch really belongs in patch 1, but I missed
    them on the first pass and instead of redoing all 3 patches I stuck them in
    this one.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     
  • cc75fb71c   [PATCH] lib/string.c cleanup: remove pointless register keyword ... Browse Code »

    Removes a few pointless register keywords. register is merely a compiler
    hint that access to the variable should be optimized, but gcc (3.3.6 in my
    case) generates the exact same code with and without the keyword, and even
    if gcc did something different with register present I think it is doubtful
    we would want to optimize access to these variables - especially since this
    is generic library code and there are supposed to be optimized versions in
    asm/ for anything that really matters speed wise.

    (akpm: iirc, keyword register is a gcc no-op unless using -O0)

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     
  • 51a0f0f65   [PATCH] lib/string.c cleanup: whitespace and CodingStyle cleanups ... Browse Code »

    Removes some blank lines, removes some trailing whitespace, adds spaces
    after commas and a few similar changes.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     
  • 0d078f6f9   [PATCH] CONFIG_IA32 ... Browse Code »

    Add CONFIG_X86_32 for i386. This allows selecting options that only apply
    to 32-bit systems.

    (X86 && !X86_64) becomes X86_32
    (X86 || X86_64) becomes X86

    Signed-off-by: Brian Gerst
    Cc: Sam Ravnborg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Brian Gerst
     

29 Oct, 2005

3 commits

28 Oct, 2005

1 commit

24 Oct, 2005

1 commit

  • 8d3b35914   [PATCH] inotify/idr leak fix ... Browse Code »

    Fix a bug which was reported and diagnosed by
    Stefan Jones

    IDR trees include a cache of idr_layer objects. There's no way to destroy
    this cache, so when we discard an overall idr tree we end up leaking some
    memory.

    Add and use idr_destroy() for this. v9fs and infiniband also need to use
    idr_destroy() to avoid leaks.

    Or, we make the cache global, like radix_tree_preload(). Which is probably
    better. Later.

    Cc: Eric Van Hensbergen
    Cc: Roland Dreier
    Cc: Robert Love
    Cc: John McCutchan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

21 Oct, 2005

1 commit

18 Oct, 2005

1 commit

09 Oct, 2005

1 commit

  • dd0fc66fb   [PATCH] gfp flags annotations - part 1 ... Browse Code »

    - added typedef unsigned int __nocast gfp_t;

    - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
    the same warnings as far as sparse is concerned, doesn't change
    generated code (from gcc point of view we replaced unsigned int with
    typedef) and documents what's going on far better.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

05 Oct, 2005

1 commit

30 Sep, 2005

6 commits

15 Sep, 2005

1 commit

  • 4db2ce019   [LIB]: Consolidate _atomic_dec_and_lock() ... Browse Code »

    Several implementations were essentialy a common piece of C code using
    the cmpxchg() macro. Put the implementation in one spot that everyone
    can share, and convert sparc64 over to using this.

    Alpha is the lone arch-specific implementation, which codes up a
    special fast path for the common case in order to avoid GP reloading
    which a pure C version would require.

    Signed-off-by: David S. Miller

    David S. Miller
     

13 Sep, 2005

1 commit

11 Sep, 2005

3 commits

  • ecec4cb7a   [PATCH] lib/sort.c: small cleanups ... Browse Code »

    This patch contains the following small cleanups:
    - make two needlessly global functions static
    - every file should #include the header files containing the prototypes
    of it's global functions

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

    Adrian Bunk
     
  • 00b61f519   [PATCH] lib/radix-tree: Fix "nocast type" warnings ... Browse Code »

    Fix the sparse warning "implicit cast to nocast type"

    Signed-off-by: Victor Fusco
    Signed-off-by: Domen Puncer
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Victor Fusco
     
  • fb1c8f93d   [PATCH] spinlock consolidation ... Browse Code »

    This patch (written by me and also containing many suggestions of Arjan van
    de Ven) does a major cleanup of the spinlock code. It does the following
    things:

    - consolidates and enhances the spinlock/rwlock debugging code

    - simplifies the asm/spinlock.h files

    - encapsulates the raw spinlock type and moves generic spinlock
    features (such as ->break_lock) into the generic code.

    - cleans up the spinlock code hierarchy to get rid of the spaghetti.

    Most notably there's now only a single variant of the debugging code,
    located in lib/spinlock_debug.c. (previously we had one SMP debugging
    variant per architecture, plus a separate generic one for UP builds)

    Also, i've enhanced the rwlock debugging facility, it will now track
    write-owners. There is new spinlock-owner/CPU-tracking on SMP builds too.
    All locks have lockup detection now, which will work for both soft and hard
    spin/rwlock lockups.

    The arch-level include files now only contain the minimally necessary
    subset of the spinlock code - all the rest that can be generalized now
    lives in the generic headers:

    include/asm-i386/spinlock_types.h | 16
    include/asm-x86_64/spinlock_types.h | 16

    I have also split up the various spinlock variants into separate files,
    making it easier to see which does what. The new layout is:

    SMP | UP
    ----------------------------|-----------------------------------
    asm/spinlock_types_smp.h | linux/spinlock_types_up.h
    linux/spinlock_types.h | linux/spinlock_types.h
    asm/spinlock_smp.h | linux/spinlock_up.h
    linux/spinlock_api_smp.h | linux/spinlock_api_up.h
    linux/spinlock.h | linux/spinlock.h

    /*
    * here's the role of the various spinlock/rwlock related include files:
    *
    * on SMP builds:
    *
    * asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the
    * initializers
    *
    * linux/spinlock_types.h:
    * defines the generic type and initializers
    *
    * asm/spinlock.h: contains the __raw_spin_*()/etc. lowlevel
    * implementations, mostly inline assembly code
    *
    * (also included on UP-debug builds:)
    *
    * linux/spinlock_api_smp.h:
    * contains the prototypes for the _spin_*() APIs.
    *
    * linux/spinlock.h: builds the final spin_*() APIs.
    *
    * on UP builds:
    *
    * linux/spinlock_type_up.h:
    * contains the generic, simplified UP spinlock type.
    * (which is an empty structure on non-debug builds)
    *
    * linux/spinlock_types.h:
    * defines the generic type and initializers
    *
    * linux/spinlock_up.h:
    * contains the __raw_spin_*()/etc. version of UP
    * builds. (which are NOPs on non-debug, non-preempt
    * builds)
    *
    * (included on UP-non-debug builds:)
    *
    * linux/spinlock_api_up.h:
    * builds the _spin_*() APIs.
    *
    * linux/spinlock.h: builds the final spin_*() APIs.
    */

    All SMP and UP architectures are converted by this patch.

    arm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via
    crosscompilers. m32r, mips, sh, sparc, have not been tested yet, but should
    be mostly fine.

    From: Grant Grundler

    Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU).
    Builds 32-bit SMP kernel (not booted or tested). I did not try to build
    non-SMP kernels. That should be trivial to fix up later if necessary.

    I converted bit ops atomic_hash lock to raw_spinlock_t. Doing so avoids
    some ugly nesting of linux/*.h and asm/*.h files. Those particular locks
    are well tested and contained entirely inside arch specific code. I do NOT
    expect any new issues to arise with them.

    If someone does ever need to use debug/metrics with them, then they will
    need to unravel this hairball between spinlocks, atomic ops, and bit ops
    that exist only because parisc has exactly one atomic instruction: LDCW
    (load and clear word).

    From: "Luck, Tony"

    ia64 fix

    Signed-off-by: Ingo Molnar
    Signed-off-by: Arjan van de Ven
    Signed-off-by: Grant Grundler
    Cc: Matthew Wilcox
    Signed-off-by: Hirokazu Takata
    Signed-off-by: Mikael Pettersson
    Signed-off-by: Benoit Boissinot
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

09 Sep, 2005

1 commit