]> git.karo-electronics.de Git - linux-beck.git/commit
mm, hotplug: avoid compiling memory hotremove functions when disabled
authorDavid Rientjes <rientjes@google.com>
Mon, 29 Apr 2013 22:08:22 +0000 (15:08 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 29 Apr 2013 22:54:37 +0000 (15:54 -0700)
commit4edd7ceff0662afde195da6f6c43e7cbe1ed2dc4
tree89e53f524dae229f9db490a1e091842302010c21
parentfe74ebb106a5950e82222c8ea258a9c0d7c65f04
mm, hotplug: avoid compiling memory hotremove functions when disabled

__remove_pages() is only necessary for CONFIG_MEMORY_HOTREMOVE.  PowerPC
pseries will return -EOPNOTSUPP if unsupported.

Adding an #ifdef causes several other functions it depends on to also
become unnecessary, which saves in .text when disabled (it's disabled in
most defconfigs besides powerpc, including x86).  remove_memory_block()
becomes static since it is not referenced outside of
drivers/base/memory.c.

Build tested on x86 and powerpc with CONFIG_MEMORY_HOTREMOVE both enabled
and disabled.

Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/powerpc/platforms/pseries/hotplug-memory.c
drivers/base/memory.c
include/linux/memory.h
include/linux/memory_hotplug.h
mm/memory_hotplug.c
mm/sparse.c