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Rev 3424 Rev 3425
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        default:
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        default:
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            /*
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            /*
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             * Entering state is unexpected.
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             * Entering state is unexpected.
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             */
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             */
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            panic("tid%" PRIu64 ": unexpected state %s\n", THREAD->tid,
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            panic("tid%" PRIu64 ": unexpected state %s\n",
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                thread_states[THREAD->state]);
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                THREAD->tid, thread_states[THREAD->state]);
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            break;
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            break;
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        }
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        }
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        THREAD = NULL;
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        THREAD = NULL;
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    }
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    }
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    spinlock_lock(&THREAD->lock);  
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    spinlock_lock(&THREAD->lock);  
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    THREAD->state = Running;
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    THREAD->state = Running;
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#ifdef SCHEDULER_VERBOSE
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#ifdef SCHEDULER_VERBOSE
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    printf("cpu%u: tid %" PRIu64 " (priority=%d, ticks=%" PRIu64 ", nrdy=%ld)\n",
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    printf("cpu%u: tid %" PRIu64 " (priority=%d, ticks=%" PRIu64
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        CPU->id, THREAD->tid, THREAD->priority, THREAD->ticks,
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        ", nrdy=%ld)\n", CPU->id, THREAD->tid, THREAD->priority,
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        atomic_get(&CPU->nrdy));
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        THREAD->ticks, atomic_get(&CPU->nrdy));
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#endif 
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#endif 
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    /*
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    /*
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     * Some architectures provide late kernel PA2KA(identity)
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     * Some architectures provide late kernel PA2KA(identity)
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     * mapping in a page fault handler. However, the page fault
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     * mapping in a page fault handler. However, the page fault
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                /*
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                /*
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                 * Ready t on local CPU
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                 * Ready t on local CPU
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                 */
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                 */
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                spinlock_lock(&t->lock);
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                spinlock_lock(&t->lock);
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#ifdef KCPULB_VERBOSE
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#ifdef KCPULB_VERBOSE
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                printf("kcpulb%u: TID %" PRIu64 " -> cpu%u, nrdy=%ld, "
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                printf("kcpulb%u: TID %" PRIu64 " -> cpu%u, "
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                    "avg=%ld\n", CPU->id, t->tid, CPU->id,
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                    "nrdy=%ld, avg=%ld\n", CPU->id, t->tid,
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                    atomic_get(&CPU->nrdy),
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                    CPU->id, atomic_get(&CPU->nrdy),
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                    atomic_get(&nrdy) / config.cpu_active);
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                    atomic_get(&nrdy) / config.cpu_active);
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#endif
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#endif
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                t->flags |= THREAD_FLAG_STOLEN;
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                t->flags |= THREAD_FLAG_STOLEN;
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                t->state = Entering;
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                t->state = Entering;
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                spinlock_unlock(&t->lock);
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                spinlock_unlock(&t->lock);