The patch titled
include/asm-generic/vmlinux.lds.h: make readmostly section correctly align
has been added to the -mm tree. Its filename is
include-asm-generic-vmlinuxldsh-make-readmostly-section-correctly-align.patch
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------------------------------------------------------
Subject: include/asm-generic/vmlinux.lds.h: make readmostly section correctly align
From: Shaohua Li <shaohua.li@xxxxxxxxx>
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@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/vmlinux.lds.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN include/asm-generic/vmlinux.lds.h~include-asm-generic-vmlinuxldsh-make-readmostly-section-correctly-align include/asm-generic/vmlinux.lds.h
--- a/include/asm-generic/vmlinux.lds.h~include-asm-generic-vmlinuxldsh-make-readmostly-section-correctly-align
+++ a/include/asm-generic/vmlinux.lds.h
@@ -192,7 +192,8 @@
#define READ_MOSTLY_DATA(align) \
. = ALIGN(align); \
- *(.data..read_mostly)
+ *(.data..read_mostly) \
+ . = ALIGN(align);
#define CACHELINE_ALIGNED_DATA(align) \
. = ALIGN(align); \
_
Patches currently in -mm which might be from shaohua.li@xxxxxxxxx are
mm-page-allocator-adjust-the-per-cpu-counter-threshold-when-memory-is-low.patch
writeback-io-less-balance_dirty_pages.patch
writeback-consolidate-variable-names-in-balance_dirty_pages.patch
writeback-per-task-rate-limit-on-balance_dirty_pages.patch
writeback-per-task-rate-limit-on-balance_dirty_pages-fix.patch
writeback-prevent-duplicate-balance_dirty_pages_ratelimited-calls.patch
writeback-account-per-bdi-accumulated-written-pages.patch
writeback-bdi-write-bandwidth-estimation.patch
writeback-bdi-write-bandwidth-estimation-fix.patch
writeback-show-bdi-write-bandwidth-in-debugfs.patch
writeback-quit-throttling-when-bdi-dirty-pages-dropped-low.patch
writeback-reduce-per-bdi-dirty-threshold-ramp-up-time.patch
writeback-make-reasonable-gap-between-the-dirty-background-thresholds.patch
writeback-scale-down-max-throttle-bandwidth-on-concurrent-dirtiers.patch
writeback-add-trace-event-for-balance_dirty_pages.patch
writeback-make-nr_to_write-a-per-file-limit.patch
writeback-make-nr_to_write-a-per-file-limit-fix.patch
vmscan-make-kswapd-use-a-correct-order.patch
include-asm-generic-vmlinuxldsh-make-readmostly-section-correctly-align.patch
percpu-add-new-macros-to-make-percpu-readmostly-section-correctly-align.patch
percpu-use-new-macros-for-x86-percpu-readmostly-section.patch
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