sh: Calculate shm alignment at runtime.

Set the SHM alignment at runtime, based off of probed cache desc.
Optimize get_unmapped_area() to only colour align shared mappings.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h
index 3d8dae31a6f6..ca8b26d90475 100644
--- a/include/asm-sh/page.h
+++ b/include/asm-sh/page.h
@@ -44,6 +44,8 @@
 extern void (*clear_page)(void *to);
 extern void (*copy_page)(void *to, void *from);
 
+extern unsigned long shm_align_mask;
+
 #ifdef CONFIG_MMU
 extern void clear_page_slow(void *to);
 extern void copy_page_slow(void *to, void *from);