Messages in this thread Patch in this message | | | From | David Hildenbrand <> | Subject | [PATCH RFCv2 3/4] s390: numa: implement memory_add_physaddr_to_nid() | Date | Wed, 23 May 2018 20:24:03 +0200 |
| |
The common interface to be used with add_memory().
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-s390@vger.kernel.org Signed-off-by: David Hildenbrand <david@redhat.com> --- arch/s390/numa/numa.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/s390/numa/numa.c b/arch/s390/numa/numa.c index 06a80434cfe6..8902652ab3e5 100644 --- a/arch/s390/numa/numa.c +++ b/arch/s390/numa/numa.c @@ -44,6 +44,18 @@ int numa_pfn_to_nid(unsigned long pfn) return mode->__pfn_to_nid ? mode->__pfn_to_nid(pfn) : 0; } +#ifdef CONFIG_MEMORY_HOTPLUG +int memory_add_physaddr_to_nid(u64 addr) +{ + int nid = numa_pfn_to_nid(PFN_DOWN(addr)); + + if (nid < 0) + return 0; + return nid; +} +EXPORT_SYMBOL(memory_add_physaddr_to_nid); +#endif + void numa_update_cpu_topology(void) { if (mode->update_cpu_topology) -- 2.17.0
| |