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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 17:16:21 -0700
commit1b2086227cd1a24f748398c22ea9652c383499cf (patch)
treee8c7a010d4900b9bd591d93cdf176c5e8f4237a2 /include
parente9ea0e2d1d00959b451dfc239df126d3c6a22043 (diff)
downloadlinaro-lsk-1b2086227cd1a24f748398c22ea9652c383499cf.tar.gz
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')
-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 29ca8f53ffb..b6e818f4b24 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -721,12 +721,12 @@
. = ALIGN(PAGE_SIZE); \
.data : AT(ADDR(.data) - LOAD_OFFSET) { \
INIT_TASK_DATA(inittask) \
+ NOSAVE_DATA \
+ PAGE_ALIGNED_DATA(pagealigned) \
CACHELINE_ALIGNED_DATA(cacheline) \
READ_MOSTLY_DATA(cacheline) \
DATA_DATA \
CONSTRUCTORS \
- NOSAVE_DATA \
- PAGE_ALIGNED_DATA(pagealigned) \
}
#define INIT_TEXT_SECTION(inittext_align) \