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| author | Shaohua Li <shaohua.li@intel.com> | 2011-01-12 16:59:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 08:03:08 -0800 |
| commit | 8369744fc4418743d3d84a8490d576e3dbf01594 (patch) | |
| tree | 11692eefa7c632dc353d438131a240a5ab82de2a /include/asm-generic | |
| parent | 1725310324163f56fea71bb77c5d6e88f9ce4192 (diff) | |
| download | lwn-8369744fc4418743d3d84a8490d576e3dbf01594.tar.gz lwn-8369744fc4418743d3d84a8490d576e3dbf01594.zip | |
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>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 3 |
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); \ |