Function mallocinit

freebsd/kern/kern_malloc.c:1164–1199

* Initialize the kernel memory allocator */ ARGSUSED*/

 */
/* ARGSUSED*/
static void
mallocinit(void *dummy)
{
	int i;
	uint8_t indx;

	mtx_init(&malloc_mtx, "malloc", NULL, MTX_DEF);

	kmeminit();

	if (kmem_zmax < PAGE_SIZE || kmem_zmax > KMEM_ZMAX)
		kmem_zmax = KMEM_ZMAX;

	for (i = 0, indx = 0; kmemzones[indx].kz_size != 0; indx++) {
		int size = kmemzones[indx].kz_size;
		const char *name = kmemzones[indx].kz_name;
		size_t align;
		int subzone;

		align = UMA_ALIGN_PTR;
		if (powerof2(size) && size > sizeof(void *))
			align = MIN(size, PAGE_SIZE) - 1;
		for (subzone = 0; subzone < numzones; subzone++) {
			kmemzones[indx].kz_zone[subzone] =
			    uma_zcreate(name, size,
#ifdef INVARIANTS
			    mtrash_ctor, mtrash_dtor, mtrash_init, mtrash_fini,
#else
			    NULL, NULL, NULL, NULL,
#endif
			    align, UMA_ZONE_MALLOC);
		}
		for (;i <= size; i+= KMEM_ZBASE)
			kmemsize[i >> KMEM_ZSHIFT] = indx;
	}
}
SYSINIT(kmem, SI_SUB_KMEM, SI_ORDER_SECOND, mallocinit, NULL);

void