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authorOscar Salvador <osalvador@suse.de>2018-08-18 01:46:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-18 02:20:29 +0300
commit4fbce633910ed80b135b84160a22b219080c8082 (patch)
tree719985a2f3a69277b26a6e3ba124829b7bf44eee /mm/memory_hotplug.c
parentd5b6f6a3610b05e6712cb9c61a85a6dff16e91cf (diff)
downloadlinux-4fbce633910ed80b135b84160a22b219080c8082.tar.xz
mm/memory_hotplug.c: make register_mem_sect_under_node() a callback of walk_memory_range()
link_mem_sections() and walk_memory_range() share most of the code, so we can use convert link_mem_sections() into a dummy function that calls walk_memory_range() with a callback to register_mem_sect_under_node(). This patch converts register_mem_sect_under_node() in order to match a walk_memory_range's callback, getting rid of the check_nid argument and checking instead if the system is still boothing, since we only have to check for the nid if the system is in such state. Link: http://lkml.kernel.org/r/20180622111839.10071-4-osalvador@techadventures.net Signed-off-by: Oscar Salvador <osalvador@suse.de> Suggested-by: Pavel Tatashin <pasha.tatashin@oracle.com> Tested-by: Reza Arbab <arbab@linux.vnet.ibm.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index e2ed64b994e5..4eb6e824a80c 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1123,7 +1123,6 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
u64 start, size;
bool new_node = false;
int ret;
- unsigned long start_pfn, nr_pages;
start = res->start;
size = resource_size(res);
@@ -1164,9 +1163,7 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
}
/* link memory sections under this node.*/
- start_pfn = start >> PAGE_SHIFT;
- nr_pages = size >> PAGE_SHIFT;
- ret = link_mem_sections(nid, start_pfn, nr_pages, false);
+ ret = link_mem_sections(nid, PFN_DOWN(start), PFN_UP(start + size - 1));
BUG_ON(ret);
/* create new memmap entry */