diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-08-07 17:41:01 -0400 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-05-31 14:41:31 +0800 |
| commit | 1d52795792ae3605464f99f482bffc963f6ea0d3 (patch) | |
| tree | 3641ac8c709372da6bbe8aafb878250e788b9692 /include | |
| parent | f7370c029b51e89e4279aa5c2b0be4ea0e33422c (diff) | |
mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
Three architectures already define these, and we'll need them genericly
soon.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit 012dcef3f058385268630c0003e9b7f8dcafbeb4)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/memory_model.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index 14909b0b9cae..f20f407ce45d 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -69,6 +69,12 @@ }) #endif /* CONFIG_FLATMEM/DISCONTIGMEM/SPARSEMEM */ +/* + * Convert a physical address to a Page Frame Number and back + */ +#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) +#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) + #define page_to_pfn __page_to_pfn #define pfn_to_page __pfn_to_page |