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/** CPU structure.

 *

 * There is one structure like this for every processor.

 */

typedef struct {

    SPINLOCK_DECLARE(lock);

    tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN];

    count_t tlb_messages_count;

    context_t saved_context;

    atomic_t nrdy;

    runq_t rq[RQ_COUNT];

    volatile count_t needs_relink;

    SPINLOCK_DECLARE(timeoutlock);

    link_t timeout_active_head;

    count_t missed_clock_ticks; /**< When system clock loses a tick, it is recorded here

                         so that clock() can react. This variable is

                         CPU-local and can be only accessed when interrupts

                         are disabled. */

    /**

     * Processor ID assigned by kernel.

     */

    unsigned int id;

    int active;

    int tlb_active;

    uint16_t frequency_mhz;

    uint32_t delay_loop_const;

    cpu_arch_t arch;

    struct thread *fpu_owner;

    /**

     * Stack used by scheduler when there is no running thread.

     */

    uint8_t *stack;

} cpu_t;