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asm-generic/tlb: Guard with #ifdef CONFIG_MMU 

The inner workings of the mmu_gather-based TLB invalidation mechanism
are not relevant to nommu configurations, so guard them with an #ifdef.
This allows us to implement future functions using static inlines
without breaking the build.

Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2018-08-24 13:28:28 +01:00
parent 57361846b5
commit faaadaf315
1 changed files with 4 additions and 0 deletions
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4
include/asm-generic/tlb.h
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@ -20,6 +20,8 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#ifdef CONFIG_MMU
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
/*
* Semi RCU freeing of the page directories.
@ -310,6 +312,8 @@ static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
#endif
#endif
#endif /* CONFIG_MMU */
#define tlb_migrate_finish(mm) do {} while (0)
#endif /* _ASM_GENERIC__TLB_H */