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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2007-10-16 10:26:14 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 18:43:02 +0200
commit48e94196a533dbee17c252bf80d0310fb8c8c2eb (patch)
tree9b29060b0e2600dc7da645fd436dc94c25d1fb36 /arch/ia64
parentmemory unplug: ia64 interface (diff)
downloadlinux-48e94196a533dbee17c252bf80d0310fb8c8c2eb.tar.xz
linux-48e94196a533dbee17c252bf80d0310fb8c8c2eb.zip
fix memory hot remove not configured case.
Now, arch dependent code around CONFIG_MEMORY_HOTREMOVE is a mess. This patch cleans up them. This is against 2.6.23-rc6-mm1. - fix compile failure on ia64/ CONFIG_MEMORY_HOTPLUG && !CONFIG_MEMORY_HOTREMOVE case. - For !CONFIG_MEMORY_HOTREMOVE, add generic no-op remove_memory(), which returns -EINVAL. - removed remove_pages() only used in powerpc. - removed no-op remove_memory() in i386, sh, sparc64, x86_64. - only powerpc returns -ENOSYS at memory hot remove(no-op). changes it to return -EINVAL. Note: Currently, only ia64 supports CONFIG_MEMORY_HOTREMOVE. I welcome other archs if there are requirements and testers. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/mm/init.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 947ec0c73234..3e10152abbf0 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -718,7 +718,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
return ret;
}
-
+#ifdef CONFIG_MEMORY_HOTREMOVE
int remove_memory(u64 start, u64 size)
{
unsigned long start_pfn, end_pfn;
@@ -734,4 +734,5 @@ out:
return ret;
}
EXPORT_SYMBOL_GPL(remove_memory);
+#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif