/*
* Initialize the sysfs support for memory devices...
*/
int __init memory_dev_init(void)
{
unsigned int i;
int ret;
int err;
unsigned long block_sz;
struct memory_block *mem = NULL;
ret = subsys_system_register(&memory_subsys, NULL);
if (ret)
goto out;
block_sz = get_memory_block_size();
sections_per_block = block_sz / MIN_MEMORY_BLOCK_SIZE;
/*
* Create entries for memory sections that were found
* during boot and have been initialized
*/
for (i = 0; i < NR_MEM_SECTIONS; i++) {
if (!present_section_nr(i))
continue;
/* don't need to reuse memory_block if only one per block */
err = add_memory_section(0, __nr_to_section(i),
(sections_per_block == 1) ? NULL : &mem,
MEM_ONLINE,
BOOT);
if (!ret)
ret = err;
}
err = memory_probe_init();
if (!ret)
ret = err;
err = memory_fail_init();
if (!ret)
ret = err;
err = block_size_init();
if (!ret)
ret = err;
out:
if (ret)
printk(KERN_ERR "%s() failed: %d\n", __func__, ret);
return ret;
}
/*
* need an interface for the VM to add new memory regions,
* but without onlining it.
*/
int register_new_memory(int nid, struct mem_section *section)
{
return add_memory_section(nid, section, MEM_OFFLINE, HOTPLUG);
}
err = block_size_init();
if (!ret)
ret = err;
out:
if (ret)
printk(KERN_ERR "%s() failed: %d\n", __func__, ret);
return ret;
}
ng boot and have been initialized
*/
for (i = 0; i < NR_MEM_SECTIONS; i++) {
if (!present_section_nr(i))
continue;
/* don't need to reuse memory_block if only one per block */
err = add_memory_section(0, __nr_to_section(i),
(sections_per_block == 1) ? NULL : &mem,
MEM_ONLINE,
BOOT);
if (!ret)
ret = err;
}
err = memory_probe_init();
if (!ret)
ret = err;
err = memory_fail_init();
if (!ret)
ret = err;
err = block_size_init();
if (!ret)
ret = err;
out: