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[V2,06/10] powerpc/mm: Compile out radix related functions if RADIX_MMU is disabled

Message ID 1465395958-21349-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com (mailing list archive)
State Superseded
Headers show

Commit Message

Aneesh Kumar K.V June 8, 2016, 2:25 p.m. UTC
Currently we depend on mmu_has_feature to evalute to zero based on
MMU_FTRS_POSSIBLE mask. In a later patch, we want to update
radix_enabled() to runtime update the conditional operation to a jump
instruction. This implies we cannot depend on MMU_FTRS_POSSIBLE mask.
Instead define radix_enabled to return 0 if RADIX_MMU is not enabled.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/book3s/64/mmu.h | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index 5854263d4d6e..d4eda6420523 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -23,7 +23,12 @@  struct mmu_psize_def {
 };
 extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
 
+#ifdef CONFIG_PPC_RADIX_MMU
 #define radix_enabled() mmu_has_feature(MMU_FTR_RADIX)
+#else
+#define radix_enabled() (0)
+#endif
+
 
 #endif /* __ASSEMBLY__ */