diff options
| author | Laura Abbott <lauraa@codeaurora.org> | 2013-04-09 17:07:02 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:04:46 -0700 |
| commit | 65899d855fbf5088be4a1d16adf9f7359f6a850c (patch) | |
| tree | ff1ecd66edac7f83d351e8f119012d65346baaca | |
| parent | 40eb383998a792c1fa6983dfd3cf8c10c559339b (diff) | |
mm: highmem: Add definitions for kmap_atomic_flush_unused
kmap_flush_unused does not flush kmap_atomic mappings which
are handled separately. Architectures may have use cases to require
these to be flushed. Add an option to let architectures define
kmap_atomic flushing to get rid of extra mappings.
Change-Id: I5a338ed9e215f0f0ad3ab58a3066d2f4c8ce3ba7
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
| -rw-r--r-- | include/linux/highmem.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index bb3f3297062a..4c70716759a6 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -39,6 +39,12 @@ extern unsigned long totalhigh_pages; void kmap_flush_unused(void); +#ifdef CONFIG_ARCH_WANT_KMAP_ATOMIC_FLUSH +void kmap_atomic_flush_unused(void); +#else +static inline void kmap_atomic_flush_unused(void) { } +#endif + struct page *kmap_to_page(void *addr); #else /* CONFIG_HIGHMEM */ @@ -80,6 +86,7 @@ static inline void __kunmap_atomic(void *addr) #define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) #define kmap_flush_unused() do {} while(0) +#define kmap_atomic_flush_unused() do {} while (0) #endif #endif /* CONFIG_HIGHMEM */ |