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authorDavid Hildenbrand <david@redhat.com>2021-09-08 05:55:30 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-08 21:50:23 +0300
commit836809ec75cc07c6d07c43036e3844affbe0d46f (patch)
treec9d59582d1ca908eac48e57f6b90f7aa451d76f5 /include/linux/memory.h
parent028fc57a1c361116e3bcebfeba4ca87878baaf4f (diff)
downloadlinux-836809ec75cc07c6d07c43036e3844affbe0d46f.tar.xz
mm/memory_hotplug: track present pages in memory groups
Let's track all present pages in each memory group. Especially, track memory present in ZONE_MOVABLE and memory present in one of the kernel zones (which really only is ZONE_NORMAL right now as memory groups only apply to hotplugged memory) separately within a memory group, to prepare for making smart auto-online decision for individual memory blocks within a memory group based on group statistics. Link: https://lkml.kernel.org/r/20210806124715.17090-5-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hui Zhu <teawater@gmail.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Marek Kedzierski <mkedzier@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/memory.h')
-rw-r--r--include/linux/memory.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/memory.h b/include/linux/memory.h
index d505c12c5c77..6ffdc1db385f 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -27,6 +27,10 @@
* struct memory_group - a logical group of memory blocks
* @nid: The node id for all memory blocks inside the memory group.
* @blocks: List of all memory blocks belonging to this memory group.
+ * @present_kernel_pages: Present (online) memory outside ZONE_MOVABLE of this
+ * memory group.
+ * @present_movable_pages: Present (online) memory in ZONE_MOVABLE of this
+ * memory group.
* @is_dynamic: The memory group type: static vs. dynamic
* @s.max_pages: Valid with &memory_group.is_dynamic == false. The maximum
* number of pages we'll have in this static memory group.
@@ -48,6 +52,8 @@
struct memory_group {
int nid;
struct list_head memory_blocks;
+ unsigned long present_kernel_pages;
+ unsigned long present_movable_pages;
bool is_dynamic;
union {
struct {