// swap_init - init swap fs, two swap lists, alloc memory & init for swap_entry record array mem_map
// - init the hash list.
void
swap_init(void) {
swapfs_init();
swap_list_init(&active_list);
swap_list_init(&inactive_list);
if (!(512 <= max_swap_offset && max_swap_offset < MAX_SWAP_OFFSET_LIMIT)) {
panic("bad max_swap_offset %08x.\n", max_swap_offset);
}
mem_map = kmalloc(sizeof(short) * max_swap_offset);
assert(mem_map != NULL);
size_t offset;
for (offset = 0; offset < max_swap_offset; offset ++) {
mem_map[offset] = SWAP_UNUSED;
}
int i;
for (i = 0; i < HASH_LIST_SIZE; i ++) {
list_init(hash_list + i);
}
sem_init(&swap_in_sem, 1);
check_swap();
check_mm_swap();
check_mm_shm_swap();
wait_queue_init(&kswapd_done);
swap_init_ok = 1;
}
int swap_init(void)
{
swapfs_init();
if (!(1024 <= max_swap_offset && max_swap_offset < MAX_SWAP_OFFSET_LIMIT))
{
panic("bad max_swap_offset %08x.\n", max_swap_offset);
}
sm = &swap_manager_fifo;
int r = sm->init();
if (r == 0)
{
swap_init_ok = 1;
cprintf("SWAP: manager = %s\n", sm->name);
check_swap();
}
return r;
}
