diff options
| author |   Tim Abbott <tabbott@ksplice.com> | 2009-09-24 10:36:16 -0400 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 17:16:21 -0700 |
| commit | 1b2086227cd1a24f748398c22ea9652c383499cf (patch) | |
| tree | e8c7a010d4900b9bd591d93cdf176c5e8f4237a2 /include/asm-generic | |
| parent | hugetlb_file_setup(): use C, not cpp (diff) | |
| download | linux-dev-1b2086227cd1a24f748398c22ea9652c383499cf.tar.xz linux-dev-1b2086227cd1a24f748398c22ea9652c383499cf.zip | |
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.h | 4 |
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 @@ . = 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) \ |