[PATCH] ARM: tlb: Compile out MULTI_TLB specific code when MULTI_TLB is undefined

From: Tzu-Jung Lee
Date: Fri Sep 16 2011 - 12:33:03 EST


To eliminate the 'undefined cpu_tlb' errors when the kernel is built with -O0

Change-Id: Ie5afea022b30dbe23a7ee3f3fc6af0dd6479b980
Signed-off-by: Tzu-Jung Lee <tjlee@xxxxxxxxxxxxx>

diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h
index d2005de..a3f7aea 100644
--- a/arch/arm/include/asm/tlbflush.h
+++ b/arch/arm/include/asm/tlbflush.h
@@ -230,23 +230,22 @@ struct cpu_tlb_fns {
*/
#ifdef MULTI_TLB

+extern struct cpu_tlb_fns cpu_tlb;
#define __cpu_flush_user_tlb_range cpu_tlb.flush_user_range
#define __cpu_flush_kern_tlb_range cpu_tlb.flush_kern_range
+#define __cpu_tlb_flags cpu_tlb.tlb_flags

#else

#define __cpu_flush_user_tlb_range __glue(_TLB,_flush_user_tlb_range)
#define __cpu_flush_kern_tlb_range __glue(_TLB,_flush_kern_tlb_range)
+#define __cpu_tlb_flags 0

extern void __cpu_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
extern void __cpu_flush_kern_tlb_range(unsigned long, unsigned long);

#endif

-extern struct cpu_tlb_fns cpu_tlb;
-
-#define __cpu_tlb_flags cpu_tlb.tlb_flags
-
/*
* TLB Management
* ==============
--
1.7.6.1

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