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authorChristoph Hellwig <hch@lst.de>2015-08-07 17:41:01 -0400
committerDan Williams <dan.j.williams@intel.com>2015-08-27 19:40:58 -0400
commit012dcef3f058385268630c0003e9b7f8dcafbeb4 (patch)
tree11009c91175cbb15149259fc5c6c7722f98a25b1 /include/asm-generic
parentcb389b9c0e00c30c9daf20287f7d91e2466edbb1 (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>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/memory_model.h6
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

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