From 1b2086227cd1a24f748398c22ea9652c383499cf Mon Sep 17 00:00:00 2001 From: Tim Abbott Date: Thu, 24 Sep 2009 10:36:16 -0400 Subject: [PATCH] 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 Reviewed-by: Sam Ravnborg Signed-off-by: Linus Torvalds --- include/asm-generic/vmlinux.lds.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 29ca8f5..b6e818f 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) \ -- 2.7.4