Function uma_prealloc

freebsd/vm/uma_core.c:4898–4933

See uma.h */

/* See uma.h */
void
uma_prealloc(uma_zone_t zone, int items)
{
	struct vm_domainset_iter di;
	uma_domain_t dom;
	uma_slab_t slab;
	uma_keg_t keg;
	int aflags, domain, slabs;

	KEG_GET(zone, keg);
	slabs = howmany(items, keg->uk_ipers);
	while (slabs-- > 0) {
		aflags = M_NOWAIT;
		vm_domainset_iter_policy_ref_init(&di, &keg->uk_dr, &domain,
		    &aflags);
		for (;;) {
			slab = keg_alloc_slab(keg, zone, domain, M_WAITOK,
			    aflags);
			if (slab != NULL) {
				dom = &keg->uk_domain[slab->us_domain];
				/*
				 * keg_alloc_slab() always returns a slab on the
				 * partial list.
				 */
				LIST_REMOVE(slab, us_link);
				LIST_INSERT_HEAD(&dom->ud_free_slab, slab,
				    us_link);
				dom->ud_free_slabs++;
				KEG_UNLOCK(keg, slab->us_domain);
				break;
			}
			if (vm_domainset_iter_policy(&di, &domain) != 0)
				vm_wait_doms(&keg->uk_dr.dr_policy->ds_mask, 0);
		}
	}
}

/*
 * Returns a snapshot of memory consumption in bytes.