summaryrefslogtreecommitdiff
path: root/include/asm-mips/page.h
diff options
context:
space:
mode:
authorRalf Baechle <ralf@linux-mips.org>2006-06-12 09:13:56 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-06-19 17:39:22 +0100
commite53639d8f313974a87540015cbb0832905be6056 (patch)
treeb6a442bd408c9c4f2d3de284097d06c69cae273f /include/asm-mips/page.h
parent952fa954a61cee43de5afba91ae605e30ed2586c (diff)
[MIPS] Consolidate definitions of pfn_valid in one file.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/page.h')
-rw-r--r--include/asm-mips/page.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 4035ec79ecd4..3d262c01521c 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -145,6 +145,25 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#endif
#endif
+#ifdef CONFIG_FLATMEM
+
+#define pfn_valid(pfn) ((pfn) < max_mapnr)
+
+#elif defined(CONFIG_NEED_MULTIPLE_NODES)
+
+#define pfn_valid(pfn) \
+({ \
+ unsigned long __pfn = (pfn); \
+ int __n = pfn_to_nid(__pfn); \
+ ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \
+ NODE_DATA(__n)->node_spanned_pages) \
+ : 0); \
+})
+
+#else
+#error Provide a definition of pfn_valid
+#endif
+
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)