[PATCH 2/2] memory-hotplug: cleanup: removing the arch specific functions without any implementation

[Lin Feng <linfeng@cn.fujitsu.com>]

From: Michal Hocko <mhocko@suse.cz>

After introducing CONFIG_HAVE_BOOTMEM_INFO_NODE Kconfig option, the related arch
specific functions become confusing, remove them.

Guys who want to implement memory-hotplug feature on such archs for this part
should look into register_page_bootmem_info_node() and flesh out from top to
end.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Lin Feng <linfeng@cn.fujitsu.com>
---
 arch/ia64/mm/discontig.c  |    5 -----
 arch/powerpc/mm/init_64.c |    5 -----
 arch/s390/mm/vmem.c       |    6 ------
 arch/sparc/mm/init_64.c   |    5 -----
 4 files changed, 0 insertions(+), 21 deletions(-)

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 882a0fd..cb5e1ff 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -827,9 +827,4 @@ void vmemmap_free(struct page *memmap, unsigned long nr_pages)
 {
 }
 
-void register_page_bootmem_memmap(unsigned long section_nr,
-				  struct page *start_page, unsigned long size)
-{
-	/* TODO */
-}
 #endif
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 2969591..7e2246f 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -302,10 +302,5 @@ void vmemmap_free(struct page *memmap, unsigned long nr_pages)
 {
 }
 
-void register_page_bootmem_memmap(unsigned long section_nr,
-				  struct page *start_page, unsigned long size)
-{
-	/* TODO */
-}
 #endif /* CONFIG_SPARSEMEM_VMEMMAP */
 
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 81e6ba3..fa09c2f 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -276,12 +276,6 @@ void vmemmap_free(struct page *memmap, unsigned long nr_pages)
 {
 }
 
-void register_page_bootmem_memmap(unsigned long section_nr,
-				  struct page *start_page, unsigned long size)
-{
-	/* TODO */
-}
-
 /*
  * Add memory segment to the segment list if it doesn't overlap with
  * an already present segment.
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 5afe21a..76ac544 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2236,11 +2236,6 @@ void vmemmap_free(struct page *memmap, unsigned long nr_pages)
 {
 }
 
-void register_page_bootmem_memmap(unsigned long section_nr,
-				  struct page *start_page, unsigned long size)
-{
-	/* TODO */
-}
 #endif /* CONFIG_SPARSEMEM_VMEMMAP */
 
 static void prot_init_common(unsigned long page_none,
-- 
1.7.1