[tip:x86/mm] x86: Drop obsolete ARCH_BOOTMEM support

[tip-bot for Sam Ravnborg]

Commit-ID:  302616911da8e868d3f1a00dce517ca30b0e065d
Gitweb:     http://git.kernel.org/tip/302616911da8e868d3f1a00dce517ca30b0e065d
Author:     Sam Ravnborg <sam@xxxxxxxxxxxx>
AuthorDate: Fri, 6 Apr 2012 14:47:35 +0200
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Sat, 14 Apr 2012 14:28:58 +0200

x86: Drop obsolete ARCH_BOOTMEM support

x86 unconditionally uses NO_BOOTMEM so there is no use
of the HAVE_ARCH_BOOTMEM support as mm/bootmem.c is the
only file referencing this symbol.

bootmem_arch_preferred_node() is the function referred
in the mm/bootmem.c code and can thuis be dropped too.

x86 was the sole user of HAVE_ARCH_BOOTMEM - so there is
an opportunity to clean up a little in mm/bootmem.c too
if we do not expect other users to emerge.

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20120406124735.GA6920@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/Kconfig                 |    4 ----
 arch/x86/include/asm/mmzone_32.h |    6 ------
 2 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5bed94e..a105ee7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1255,10 +1255,6 @@ config NODES_SHIFT
 	  Specify the maximum number of NUMA Nodes available on the target
 	  system.  Increases memory reserved to accommodate various tables.
 
-config HAVE_ARCH_BOOTMEM
-	def_bool y
-	depends on X86_32 && NUMA
-
 config HAVE_ARCH_ALLOC_REMAP
 	def_bool y
 	depends on X86_32 && NUMA
diff --git a/arch/x86/include/asm/mmzone_32.h b/arch/x86/include/asm/mmzone_32.h
index 55728e1..eb05fb3 100644
--- a/arch/x86/include/asm/mmzone_32.h
+++ b/arch/x86/include/asm/mmzone_32.h
@@ -61,10 +61,4 @@ static inline int pfn_valid(int pfn)
 
 #endif /* CONFIG_DISCONTIGMEM */
 
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-/* always use node 0 for bootmem on this numa platform */
-#define bootmem_arch_preferred_node(__bdata, size, align, goal, limit)	\
-	(NODE_DATA(0)->bdata)
-#endif /* CONFIG_NEED_MULTIPLE_NODES */
-
 #endif /* _ASM_X86_MMZONE_32_H */
--
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