From: Tim Abbott <tabbott@MIT.EDU>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Linux kernel mailing list <linux-kernel@vger.kernel.org>,
Anders Kaseorg <andersk@MIT.EDU>, Waseem Daher <wdaher@MIT.EDU>,
Denys Vlasenko <vda.linux@googlemail.com>,
Jeff Arnold <jbarnold@MIT.EDU>, Paul Mundt <lethal@linux-sh.org>,
Tim Abbott <tabbott@MIT.EDU>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: [PATCH 2/2] powerpc: Use macros for .data.page_aligned section.
Date: Tue, 28 Apr 2009 00:21:42 -0400 [thread overview]
Message-ID: <1240892502-9857-2-git-send-email-tabbott@mit.edu> (raw)
In-Reply-To: <1240892502-9857-1-git-send-email-tabbott@mit.edu>
.data.page_aligned should not need a separate output section, so as
part of this cleanup I moved into the .data output section in the
linker scripts in order to eliminate unnecessary references to the
section name.
Note that this change moves the page-aligned data inside _edata.
Since it _is_ data, I suspect having page-aligned data outside _edata
was a bug. Please comment if it is not.
Signed-off-by: Tim Abbott <tabbott@mit.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/kernel/vdso.c | 2 +-
arch/powerpc/kernel/vdso32/vdso32_wrapper.S | 3 ++-
arch/powerpc/kernel/vdso64/vdso64_wrapper.S | 3 ++-
arch/powerpc/kernel/vmlinux.lds.S | 6 +-----
4 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index ad06d5c..841910a 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -74,7 +74,7 @@ static int vdso_ready;
static union {
struct vdso_data data;
u8 page[PAGE_SIZE];
-} vdso_data_store __attribute__((__section__(".data.page_aligned")));
+} vdso_data_store __page_aligned_data
struct vdso_data *vdso_data = &vdso_data_store.data;
/* Format of the patch table */
diff --git a/arch/powerpc/kernel/vdso32/vdso32_wrapper.S b/arch/powerpc/kernel/vdso32/vdso32_wrapper.S
index 556f0ca..6e8f507 100644
--- a/arch/powerpc/kernel/vdso32/vdso32_wrapper.S
+++ b/arch/powerpc/kernel/vdso32/vdso32_wrapper.S
@@ -1,7 +1,8 @@
#include <linux/init.h>
+#include <linux/linkage.h>
#include <asm/page.h>
- .section ".data.page_aligned"
+ __PAGE_ALIGNED_DATA
.globl vdso32_start, vdso32_end
.balign PAGE_SIZE
diff --git a/arch/powerpc/kernel/vdso64/vdso64_wrapper.S b/arch/powerpc/kernel/vdso64/vdso64_wrapper.S
index 0529cb9..b8553d6 100644
--- a/arch/powerpc/kernel/vdso64/vdso64_wrapper.S
+++ b/arch/powerpc/kernel/vdso64/vdso64_wrapper.S
@@ -1,7 +1,8 @@
#include <linux/init.h>
+#include <linux/linkage.h>
#include <asm/page.h>
- .section ".data.page_aligned"
+ __PAGE_ALIGNED_DATA
.globl vdso64_start, vdso64_end
.balign PAGE_SIZE
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 4f0f7d1..30ec994 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -221,6 +221,7 @@ SECTIONS
_sdata = .;
.data : AT(ADDR(.data) - LOAD_OFFSET) {
+ PAGE_ALIGNED_DATA
DATA_DATA
#ifdef CONFIG_PPC32
*(.sdata)
@@ -258,11 +259,6 @@ SECTIONS
*(.data.init_task)
}
- . = ALIGN(PAGE_SIZE);
- .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
- *(.data.page_aligned)
- }
-
.data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
*(.data.cacheline_aligned)
}
--
1.6.2.1
next prev parent reply other threads:[~2009-04-28 4:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-27 20:32 [PATCH 00/14] clean up page aligned data and bss sections Tim Abbott
2009-04-27 20:32 ` [PATCH 01/14] Add new macros for page-aligned " Tim Abbott
2009-04-27 20:32 ` [PATCH 02/14] sh: Use macros for .bss.page_aligned section Tim Abbott
2009-04-27 20:32 ` [PATCH 03/14] mn10300: " Tim Abbott
2009-04-27 20:32 ` [PATCH 04/14] xtensa: " Tim Abbott
2009-04-27 20:32 ` [PATCH 05/14] x86: " Tim Abbott
2009-04-27 20:33 ` [PATCH 06/14] alpha: Use macros for .data.page_aligned Tim Abbott
2009-04-27 20:33 ` [PATCH 07/14] avr32: Use standard macros for .data.page_aligned section Tim Abbott
2009-04-27 20:33 ` [PATCH 08/14] sh: Use " Tim Abbott
2009-04-27 20:33 ` [PATCH 09/14] s390: Use macros for .data.page_aligned Tim Abbott
2009-04-27 20:33 ` [PATCH 10/14] powerpc: Remove unused __page_aligned macro Tim Abbott
2009-04-27 20:33 ` [PATCH 11/14] powerpc: Use macros for .data.page_aligned section Tim Abbott
2009-04-27 20:33 ` [PATCH 12/14] mn10300: Drop unused .data.idt section Tim Abbott
2009-04-27 20:33 ` [PATCH 13/14] x86: Use section .data.page_aligned for the idt_table Tim Abbott
2009-04-27 20:33 ` [PATCH 14/14] x86: Use macros for .data.page_aligned Tim Abbott
2009-04-28 4:41 ` [PATCH 12/14] mn10300: Drop unused .data.idt section Cyrill Gorcunov
2009-04-28 4:20 ` [PATCH 11/14] powerpc: Use macros for .data.page_aligned section Tim Abbott
2009-04-28 4:21 ` [PATCH 1/2] powerpc: share .data output section definition between 32 and 64 bits Tim Abbott
2009-04-28 4:21 ` Tim Abbott [this message]
2009-04-28 15:07 ` [PATCH 11/14] powerpc: Use macros for .data.page_aligned section Stephen Rothwell
2009-04-28 15:13 ` Tim Abbott
2009-04-28 15:17 ` Stephen Rothwell
2009-04-28 7:39 ` [PATCH 09/14] s390: Use macros for .data.page_aligned Cyrill Gorcunov
2009-04-27 21:57 ` [PATCH 08/14] sh: Use macros for .data.page_aligned section Paul Mundt
2009-04-28 14:49 ` [PATCH 07/14] avr32: Use standard " Haavard Skinnemoen
2009-04-27 21:57 ` [PATCH 02/14] sh: Use macros for .bss.page_aligned section Paul Mundt
2009-04-27 23:43 ` [PATCH 03/14] mn10300: " David Howells
2009-04-27 23:48 ` Tim Abbott
2009-04-28 12:45 ` David Howells
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