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authorTim Abbott <tabbott@ksplice.com>2009-09-24 10:36:16 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-24 20:16:21 -0400
commit1b2086227cd1a24f748398c22ea9652c383499cf (patch)
treee8c7a010d4900b9bd591d93cdf176c5e8f4237a2 /include/asm-generic
parente9ea0e2d1d00959b451dfc239df126d3c6a22043 (diff)
Optimize the ordering of sections in RW_DATA_SECTION.
The old RW_DATA_SECTION had INIT_TASK_DATA (which was more-than-PAGE_SIZE-aligned), followed by a bunch of small alignment stuff, followed by more PAGE_SIZE-aligned stuff, so you wasted memory in the middle of .data re-aligning back up to PAGE_SIZE. This patch sorts the sections by alignment requirements, which should pack them essentially optimally. Signed-off-by: Tim Abbott <tabbott@ksplice.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/vmlinux.lds.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 29ca8f53ffbe..b6e818f4b247 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -721,12 +721,12 @@
721 . = ALIGN(PAGE_SIZE); \ 721 . = ALIGN(PAGE_SIZE); \
722 .data : AT(ADDR(.data) - LOAD_OFFSET) { \ 722 .data : AT(ADDR(.data) - LOAD_OFFSET) { \
723 INIT_TASK_DATA(inittask) \ 723 INIT_TASK_DATA(inittask) \
724 NOSAVE_DATA \
725 PAGE_ALIGNED_DATA(pagealigned) \
724 CACHELINE_ALIGNED_DATA(cacheline) \ 726 CACHELINE_ALIGNED_DATA(cacheline) \
725 READ_MOSTLY_DATA(cacheline) \ 727 READ_MOSTLY_DATA(cacheline) \
726 DATA_DATA \ 728 DATA_DATA \
727 CONSTRUCTORS \ 729 CONSTRUCTORS \
728 NOSAVE_DATA \
729 PAGE_ALIGNED_DATA(pagealigned) \
730 } 730 }
731 731
732#define INIT_TEXT_SECTION(inittext_align) \ 732#define INIT_TEXT_SECTION(inittext_align) \