From: Ian Campbell <ijc@hellion.org.uk>
Date: Sun, 17 Feb 2008 19:09:42 +0000 (+0000)
Subject: x86: reduce arch/x86/mm/ioremap.o size
X-Git-Tag: v3.12-rc1~22029^2~571
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c92a7a54d6579c9c01374092e7b61a6161f2ef70;p=kernel%2Fkernel-generic.git

x86: reduce arch/x86/mm/ioremap.o size

> Don't we have a special section for page-aligned data so it doesn't
> waste most of two pages?

We have .bss.page_aligned and it seems appropriate to use it.

    text	   data	    bss	    dec	    hex	filename
    -   3388	   8236	      4	  11628	   2d6c	../build-32/arch/x86/mm/ioremap.o
    +   3388	     48	   4100	   7536	   1d70	../build-32/arch/x86/mm/ioremap.o

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 794895c..868bbde 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -272,8 +272,8 @@ static int __init early_ioremap_debug_setup(char *str)
 early_param("early_ioremap_debug", early_ioremap_debug_setup);
 
 static __initdata int after_paging_init;
-static __initdata pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)]
-				__attribute__((aligned(PAGE_SIZE)));
+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)]
+		__section(.bss.page_aligned);
 
 static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
 {