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authorArnd Bergmann <arnd@arndb.de>2009-05-13 22:56:33 +0000
committerArnd Bergmann <arnd@klappe2.(none)>2009-06-11 21:02:37 +0200
commitaafe4dbed0bf6cbdb2e9f03e1d42f8a540d8541d (patch)
tree5cc3e500ebb234ad82928de0ed680373c616dc44 /include/asm-generic/spinlock.h
parent9858c60cc2d33b18367b2bc6947e3ea23db26ccb (diff)
asm-generic: add generic versions of common headers
These are all kernel internal interfaces that get copied around a lot. In most cases, architectures can provide their own optimized versions, but these generic versions can work as well. I have tried to use the most common contents of each header to allow existing architectures to migrate easily. Thanks to Remis for suggesting a number of cleanups. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic/spinlock.h')
-rw-r--r--include/asm-generic/spinlock.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-generic/spinlock.h b/include/asm-generic/spinlock.h
new file mode 100644
index 00000000000..1547a03ac50
--- /dev/null
+++ b/include/asm-generic/spinlock.h
@@ -0,0 +1,11 @@
+#ifndef __ASM_GENERIC_SPINLOCK_H
+#define __ASM_GENERIC_SPINLOCK_H
+/*
+ * You need to implement asm/spinlock.h for SMP support. The generic
+ * version does not handle SMP.
+ */
+#ifdef CONFIG_SMP
+#error need an architecture specific asm/spinlock.h
+#endif
+
+#endif /* __ASM_GENERIC_SPINLOCK_H */