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| author |   David Vrabel <david.vrabel@citrix.com> | 2015-06-25 16:35:49 +0100 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2015-10-23 14:19:58 +0100 |
| commit | 62cedb9f135794ec26a93ae29e5f0231ab263c84 (patch) | |
| tree | 391e9f85e552feee52c6527daf7c95548572b6d0 /include/linux/memory_hotplug.h | |
| parent | Linux 4.3-rc6 (diff) | |
| download | linux-dev-62cedb9f135794ec26a93ae29e5f0231ab263c84.tar.xz linux-dev-62cedb9f135794ec26a93ae29e5f0231ab263c84.zip | |
mm: memory hotplug with an existing resource
Add add_memory_resource() to add memory using an existing "System RAM"
resource. This is useful if the memory region is being located by
finding a free resource slot with allocate_resource().
Xen guests will make use of this in their balloon driver to hotplug
arbitrary amounts of memory in response to toolstack requests.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Tang Chen <tangchen@cn.fujitsu.com>
Diffstat (limited to 'include/linux/memory_hotplug.h')
| -rw-r--r-- | include/linux/memory_hotplug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 8f60e899b33c..2ea574ff9714 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -11,6 +11,7 @@ struct zone; struct pglist_data; struct mem_section; struct memory_block; +struct resource; #ifdef CONFIG_MEMORY_HOTPLUG @@ -266,6 +267,7 @@ static inline void remove_memory(int nid, u64 start, u64 size) {} extern int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn, void *arg, int (*func)(struct memory_block *, void *)); extern int add_memory(int nid, u64 start, u64 size); +extern int add_memory_resource(int nid, struct resource *resource); extern int zone_for_memory(int nid, u64 start, u64 size, int zone_default, bool for_device); extern int arch_add_memory(int nid, u64 start, u64 size, bool for_device); |