static void __init check_sal_cache_flush (void) { unsigned long flags; int cpu; u64 vector; cpu = get_cpu(); local_irq_save(flags); /* * Schedule a timer interrupt, wait until it's reported, and see if * SAL_CACHE_FLUSH drops it. */ ia64_set_itv(IA64_TIMER_VECTOR); ia64_set_itm(ia64_get_itc() + 1000); while (!ia64_get_irr(IA64_TIMER_VECTOR)) cpu_relax(); ia64_sal_cache_flush(3); if (ia64_get_irr(IA64_TIMER_VECTOR)) { vector = ia64_get_ivr(); ia64_eoi(); WARN_ON(vector != IA64_TIMER_VECTOR); } else { sal_cache_flush_drops_interrupts = 1; printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; " "PAL_CACHE_FLUSH will be used instead\n"); ia64_eoi(); } local_irq_restore(flags); put_cpu(); }
/* * On SMP systems, when the scheduler does migration-cost autodetection, * it needs a way to flush as much of the CPU's caches as possible. */ void sched_cacheflush(void) { ia64_sal_cache_flush(3); }
void flush_all_cache() { ia64_sal_cache_flush(3); }