[PATCH PREEMPT_RT] Compilation fix for PPC

[Sripathi Kodi]

Hi,

2.6.24-rc5-rt1 won't compile on PPC if CONFIG_SMP is turned off. 

  CC      arch/powerpc/kernel/pmc.o
In file included from include/asm/tlb.h:62,
                 from arch/powerpc/mm/mem.c:44:
include/asm-generic/tlb.h: In function âtlb_gather_mmuâ:
include/asm-generic/tlb.h:58: error: implicit declaration of function â__get_cpu_lockâ
include/asm-generic/tlb.h:58: error: âmmu_gathersâ undeclared (first use in this function)
include/asm-generic/tlb.h:58: error: (Each undeclared identifier is reported only once
include/asm-generic/tlb.h:58: error: for each function it appears in.)
include/asm-generic/tlb.h:58: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:58: warning: type defaults to âintâ in declaration of âtype nameâ
include/asm-generic/tlb.h:58: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:58: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:58: warning: type defaults to âintâ in declaration of âtype nameâ
include/asm-generic/tlb.h:58: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:58: error: implicit declaration of function â__get_cpu_var_lockedâ
include/asm-generic/tlb.h:58: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h: In function âtlb_finish_mmuâ:
include/asm-generic/tlb.h:96: error: âmmu_gathersâ undeclared (first use in this function)
include/asm-generic/tlb.h:96: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:96: warning: type defaults to âintâ in declaration of âtype nameâ
include/asm-generic/tlb.h:96: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:96: error: invalid lvalue in unary â&â
include/asm-generic/tlb.h:96: warning: type defaults to âintâ in declaration of âtype nameâ
include/asm-generic/tlb.h:96: error: invalid lvalue in unary â&â

The patch below fixes it.

Thanks,
Sripathi.

Signed-off-by: Sripathi Kodi <sripathik@xxxxxxxxxx>

diff -uprN linux-2.6.24-rc5-rt1_org/include/asm-powerpc/percpu.h linux-2.6.24-rc5-rt1/include/asm-powerpc/percpu.h
--- linux-2.6.24-rc5-rt1_org/include/asm-powerpc/percpu.h	2008-01-12 17:43:03.000000000 +0530
+++ linux-2.6.24-rc5-rt1/include/asm-powerpc/percpu.h	2008-01-12 17:43:58.000000000 +0530
@@ -68,6 +68,8 @@ extern void setup_per_cpu_areas(void);
 
 #define __get_cpu_var(var)			per_cpu__##var
 #define __raw_get_cpu_var(var)			per_cpu__##var
+#define __get_cpu_lock(var, cpu)		per_cpu_lock__##var##_locked
+#define __get_cpu_var_locked(var, cpu)		per_cpu__##var##_locked
 
 #endif	/* SMP */
 
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