commit 1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b
author Pekka Enberg <penberg@cs.helsinki.fi> Mon Apr 28 02:12:22 2008 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Mon Apr 28 08:58:19 2008 -0700
tree c5413d5f64efed1aa84bfa0ab718f1e2a2f6f9cb
parent 19fc3f0acde32636529969570055c7e2a744787c

mm: move cache_line_size() to <linux/cache.h>

Not all architectures define cache_line_size() so as suggested by Andrew move
the private implementations in mm/slab.c and mm/slob.c to <linux/cache.h>.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/cache.h

diff --git a/include/linux/cache.h b/include/linux/cache.h
index 4552504..97e2488 100644
--- a/include/linux/cache.h
+++ b/include/linux/cache.h
@@ -60,4 +60,8 @@
 #endif
 #endif
 
+#ifndef CONFIG_ARCH_HAS_CACHE_LINE_SIZE
+#define cache_line_size()	L1_CACHE_BYTES
+#endif
+
 #endif /* __LINUX_CACHE_H */