linux-kernel - [PATCH 10/11] x86: use new macro for .data.read

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Message-Id: <1241136098-10376-11-git-send-email-tabbott@mit.edu>
Date:	Thu, 30 Apr 2009 20:01:37 -0400
From:	Tim Abbott <tabbott@....EDU>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Anders Kaseorg <andersk@....edu>,
	Waseem Daher <wdaher@....edu>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	Jeff Arnold <jbarnold@....edu>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Tim Abbott <tabbott@....edu>
Subject: [PATCH 10/11] x86: use new macro for .data.read_mostly section.

.data.read_mostly should not need a separate output section; this
change moves it into the .data section.

Since after the .data.read_mostly unification, _edata is now in the
same place on 32-bit and 64-bit, combine the definitions.

Signed-off-by: Tim Abbott <tabbott@....edu>
Cc: Ingo Molnar <mingo@...hat.com>
---
 arch/x86/kernel/vmlinux.lds.S |   19 ++-----------------
 1 files changed, 2 insertions(+), 17 deletions(-)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 296b49c..7235ee5 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -107,33 +107,18 @@ SECTIONS
 		NOSAVE_DATA
 #ifdef CONFIG_X86_32
 		CACHELINE_ALIGNED_DATA(32)
+		READ_MOSTLY_DATA(32)
 #else
 		CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES)
+		READ_MOSTLY_DATA(CONFIG_X86_INTERNODE_CACHE_BYTES)
 #endif
 		DATA_DATA
 		CONSTRUCTORS
 
-#ifdef CONFIG_X86_64
 		/* End of data section */
 		_edata = .;
-#endif
 	} :data
 
-	/* rarely changed data like cpu maps */
-#ifdef CONFIG_X86_32
-	. = ALIGN(32);
-#else
-	. = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
-#endif
-	.data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
-		*(.data.read_mostly)
-
-#ifdef CONFIG_X86_32
-		/* End of data section */
-		_edata = .;
-#endif
-	}
-
 #ifdef CONFIG_X86_64
 
 #define VSYSCALL_ADDR (-10*1024*1024)
-- 
1.6.2.1

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