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authorArnd Bergmann <arnd@arndb.de>2009-05-14 02:56:36 +0400
committerArnd Bergmann <arnd@klappe2.(none)>2009-06-11 23:02:50 +0400
commit5c01b46bb6bb8f2662573c05c87b5d68fa25af89 (patch)
tree77a85f19546e08ad8dfdb21b380bbdf8fb1c857e /include/asm-generic/pgalloc.h
parent3f7e212df82ca0459d44c91d9e019efd1b5f936c (diff)
downloadlinux-5c01b46bb6bb8f2662573c05c87b5d68fa25af89.tar.xz
asm-generic: add generic NOMMU versions of some headers
Memory management in generic is highly architecture specific, but on NOMMU architectures, it is mostly trivial, so just add a default implementation in asm-generic that applies to all NOMMU architectures. The two files cache.h and cacheflush.h can possibly also be used by architectures that have an MMU but never require flushing the cache or have cache lines larger than 32 bytes. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic/pgalloc.h')
-rw-r--r--include/asm-generic/pgalloc.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h
new file mode 100644
index 000000000000..9e429d08b1f8
--- /dev/null
+++ b/include/asm-generic/pgalloc.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_GENERIC_PGALLOC_H
+#define __ASM_GENERIC_PGALLOC_H
+/*
+ * an empty file is enough for a nommu architecture
+ */
+#ifdef CONFIG_MMU
+#error need to implement an architecture specific asm/pgalloc.h
+#endif
+
+#define check_pgt_cache() do { } while (0)
+
+#endif /* __ASM_GENERIC_PGALLOC_H */