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drivers: base: unshare add_memory_section() from hotplug 

add_memory_section() is currently called from both boot time and run
time via hotplug and there is a lot of nastiness to allow for shared
code including an enum parameter to convey the calling context to
add_memory_section().

This patch is the first step in breaking up the messy code sharing by
pulling the hotplug path for add_memory_section() directly into
register_new_memory().

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Seth Jennings 2013-08-20 12:13:00 -05:00 committed by Greg Kroah-Hartman
parent df2b717c66
commit d7f80530ad
1 changed files with 16 additions and 3 deletions
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19
drivers/base/memory.c
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@ -647,12 +647,25 @@ static int add_memory_section(int nid, struct mem_section *section,
*/
int register_new_memory(int nid, struct mem_section *section)
{
int ret;
int ret = 0;
struct memory_block *mem;
mutex_lock(&mem_sysfs_mutex);
ret = add_memory_section(nid, section, NULL, MEM_OFFLINE, HOTPLUG);
mutex_unlock(&mem_sysfs_mutex);
mem = find_memory_block(section);
if (mem) {
mem->section_count++;
put_device(&mem->dev);
} else {
ret = init_memory_block(&mem, section, MEM_OFFLINE);
if (ret)
goto out;
}
if (mem->section_count == sections_per_block)
ret = register_mem_sect_under_node(mem, nid);
out:
mutex_unlock(&mem_sysfs_mutex);
return ret;
}