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    Subject[PATCH [RT] 01/14] spinlocks: fix preemption feature when PREEMPT_RT is enabled
    Date
    The logic is currently broken so that PREEMPT_RT disables preemptible
    spinlock waiters, which is counter intuitive.

    Signed-off-by: Gregory Haskins <ghaskins@novell.com>
    ---

    kernel/spinlock.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/kernel/spinlock.c b/kernel/spinlock.c
    index c9bcf1b..b0e7f02 100644
    --- a/kernel/spinlock.c
    +++ b/kernel/spinlock.c
    @@ -117,7 +117,7 @@ EXPORT_SYMBOL(__write_trylock_irqsave);
    * not re-enabled during lock-acquire (which the preempt-spin-ops do):
    */
    #if !defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP) || \
    - defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_PREEMPT_RT)
    + defined(CONFIG_DEBUG_LOCK_ALLOC)

    void __lockfunc __read_lock(raw_rwlock_t *lock)
    {


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