09 May, 2007

1 commit

  • atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
    I agree (with Andi Kleen) this typeof is not needed and more error
    prone. All the original atomic.h code that uses cmpxchg (which includes
    the atomic_add_unless) uses defines instead of inline functions,
    probably to circumvent a circular dependency between system.h and
    atomic.h on powerpc (which my patch addresses). Therefore, it makes
    sense to use inline functions that will provide type checking.

    atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
    Digging into the FRV architecture shows me that it is also affected by
    such a circular dependency. Here is the diff applying this against the
    rest of my atomic.h patches.

    It applies over the atomic.h standardization patches.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mathieu Desnoyers
     

26 Apr, 2006

1 commit


10 Jan, 2006

1 commit


07 Jan, 2006

1 commit

  • Several counters already have the need to use 64 atomic variables on 64 bit
    platforms (see mm_counter_t in sched.h). We have to do ugly ifdefs to fall
    back to 32 bit atomic on 32 bit platforms.

    The VM statistics patch that I am working on will also make more extensive
    use of atomic64.

    This patch introduces a new type atomic_long_t by providing definitions in
    asm-generic/atomic.h that works similar to the c "long" type. Its 32 bits
    on 32 bit platforms and 64 bits on 64 bit platforms.

    Also cleans up the determination of the mm_counter_t in sched.h.

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

    Christoph Lameter
     

14 Nov, 2005

2 commits

  • Introduce an atomic_inc_not_zero operation. Make this a special case of
    atomic_add_unless because lockless pagecache actually wants
    atomic_inc_not_negativeone due to its offset refcount.

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

    Nick Piggin
     
  • Introduce an atomic_cmpxchg operation.

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

    Nick Piggin
     

23 Sep, 2005

1 commit


05 Sep, 2005

1 commit


24 Jun, 2005

1 commit