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powerpc/mm: Define radix_enabled() in one place & use static inline

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Currently we have radix_enabled() three times, twice in asm/book3s/64/mmu.h
and then a fallback in asm/mmu.h.

Consolidate them in asm/mmu.h. While we're at it convert them to be
static inlines, and change the fallback case to returning a bool, like
mmu_has_feature().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2016-07-27 13:37:58 +10:00
parent 6574ba950b
commit bab4c8de62
2 changed files with 12 additions and 11 deletions
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7
arch/powerpc/include/asm/book3s/64/mmu.h
View File

@ -23,13 +23,6 @@ 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_TYPE_RADIX)
#else
#define radix_enabled() (0)
#endif
#endif /* __ASSEMBLY__ */
/* 64-bit classic hash table MMU */

16
arch/powerpc/include/asm/mmu.h
View File

@ -163,6 +163,18 @@ static inline void assert_pte_locked(struct mm_struct *mm, unsigned long addr)
}
#endif /* !CONFIG_DEBUG_VM */
#ifdef CONFIG_PPC_RADIX_MMU
static inline bool radix_enabled(void)
{
return mmu_has_feature(MMU_FTR_TYPE_RADIX);
}
#else
static inline bool radix_enabled(void)
{
return false;
}
#endif
#endif /* !__ASSEMBLY__ */
/* The kernel use the constants below to index in the page sizes array.
@ -230,9 +242,5 @@ static inline void mmu_early_init_devtree(void) { }
# include <asm/mmu-8xx.h>
#endif
#ifndef radix_enabled
#define radix_enabled() (0)
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_MMU_H_ */