linux-kernel - [PATCH 07/11] x86: use new macro for .data.cacheline

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Message-Id: <1241136098-10376-8-git-send-email-tabbott@mit.edu>
Date:	Thu, 30 Apr 2009 20:01:34 -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 07/11] x86: use new macro for .data.cacheline_aligned section.

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

This removes the extra ALIGN(PAGE_SIZE) before the cache-aligned data
on x86_32, since I don't see a purpose for it.

Signed-off-by: Tim Abbott <tabbott@....edu>
Cc: Ingo Molnar <mingo@...hat.com>
---
 arch/x86/kernel/vmlinux.lds.S |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 88b059b..c7d54bf 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -104,6 +104,11 @@ SECTIONS
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
 		PAGE_ALIGNED_DATA
 		NOSAVE_DATA
+#ifdef CONFIG_X86_32
+		CACHELINE_ALIGNED_DATA(32)
+#else
+		CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES)
+#endif
 		DATA_DATA
 		CONSTRUCTORS
 
@@ -113,17 +118,6 @@ SECTIONS
 #endif
 	} :data
 
-#ifdef CONFIG_X86_32
-	. = ALIGN(32);
-#else
-	. = ALIGN(PAGE_SIZE);
-	. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-#endif
-	.data.cacheline_aligned :
-		AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
-		*(.data.cacheline_aligned)
-	}
-
 	/* rarely changed data like cpu maps */
 #ifdef CONFIG_X86_32
 	. = ALIGN(32);
-- 
1.6.2.1

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