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authorShaohua Li <shaohua.li@intel.com>2011-01-12 16:59:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 08:03:08 -0800
commit8369744fc4418743d3d84a8490d576e3dbf01594 (patch)
tree11692eefa7c632dc353d438131a240a5ab82de2a
parent1725310324163f56fea71bb77c5d6e88f9ce4192 (diff)
include/asm-generic/vmlinux.lds.h: make readmostly section correctly align
The readmostly section should end at a cacheline aligned address, otherwise the last several data might share cachline with other data and make the readmostly data still have cache bounce. For example, in ia64, secpath_cachep is the last readmostly data, and it shares cacheline with init_uts_ns. a000000100e80480 d secpath_cachep a000000100e80488 D init_uts_ns Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/asm-generic/vmlinux.lds.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 05cbad03c5ab..68649336c4ad 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -200,7 +200,8 @@
#define READ_MOSTLY_DATA(align) \
. = ALIGN(align); \
- *(.data..read_mostly)
+ *(.data..read_mostly) \
+ . = ALIGN(align);
#define CACHELINE_ALIGNED_DATA(align) \
. = ALIGN(align); \

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