[lkml]   [2002]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [patch] scheduler fixes, 2.5.32-BK

    we used to have the global semaphore_lock - which, if used separately from
    the waitqueue lock, indeed can cause the unuse of the semaphore structure
    before the spin_unlock in wakeup() completes.

    but since 2.5.25 or so we use the semaphore waitqueue's spinlock for
    semaphore locking - this also neatly solves the semaphore-unuse problem.
    Four architectures, sparc, ia64, arm and x86-64 still use the global
    semaphore_lock, but the other 13 architectures use the waitqueue spinlock

    (unless there's something else i missed.)


    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:28    [W:0.022 / U:16.096 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site