/SPINLOCK=spinlock
       /NOSPINLOCK

    The /SPINLOCK=spinlock qualifier specifies the tracing
    of a specific spinlock, for example, /SPINLOCK=LCKMGR or
    /SPINLOCK=SCHED.

    The /NOSPINLOCK qualifier disables spinlock tracing and does not
    collect any spinlock data. By default, all spinlocks are traced.