Function callout_lock

lib/ff_kern_timeout.c:333–348

}

static struct callout_cpu *
callout_lock(struct callout *c)
{
    struct callout_cpu *cc;
    int cpu;

    for (;;) {
        cpu = c->c_cpu;
        cc = CC_CPU(cpu);
        CC_LOCK(cc);
        if (cpu == c->c_cpu)
            break;
        CC_UNLOCK(cc);
    }
    return (cc);
}

static void
callout_cc_add(struct callout *c, struct callout_cpu *cc,