Messages in this thread Patch in this message | | | From | Cody P Schafer <> | Subject | [RFC PATCH v3 25/31] dnuma: memlayout: add memory_add_physaddr_to_nid() for memory_hotplug | Date | Thu, 2 May 2013 17:00:57 -0700 |
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Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> --- mm/memlayout.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/mm/memlayout.c b/mm/memlayout.c index 8b9ba9a..3e89482 100644 --- a/mm/memlayout.c +++ b/mm/memlayout.c @@ -336,3 +336,19 @@ void memlayout_global_init(void) memlayout_commit(ml); } + +#ifdef CONFIG_MEMORY_HOTPLUG +/* + * Provides a default memory_add_physaddr_to_nid() for memory hotplug, unless + * overridden by the arch. + */ +__weak +int memory_add_physaddr_to_nid(u64 start) +{ + int nid = memlayout_pfn_to_nid(PFN_DOWN(start)); + if (nid == NUMA_NO_NODE) + return 0; + return nid; +} +EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); +#endif -- 1.8.2.2
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