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Date: Wed, 6 Dec 2006 17:39:54 +0100
From: Jean-Paul Saman <jean-paul.saman@....com>
To: linux-kernel@...r.kernel.org
Subject: RFC [PATCH] 2/2 disable initramfs
Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs
when CONFIG_BLK_DEV_INITRAMFS is not selected. This saves another 4 kbytes
on most platfoms. Some platforms reserve PAGE_SIZE for initramfs. The
patch is compiled and tested on mips (PNX8535) and arm
(IntegratorAP/ARM1176 SoC)
Signed-off-by: Jean-Paul Saman <jean-paul.saman@....com>
Index: linux-2.6.git/arch/arm/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/arm/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/arm/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -53,10 +53,12 @@ SECTIONS
__security_initcall_start = .;
*(.security_initcall.init)
__security_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(32);
__initramfs_start = .;
usr/built-in.o(.init.ramfs)
__initramfs_end = .;
+#endif
. = ALIGN(64);
__per_cpu_start = .;
*(.data.percpu)
Index: linux-2.6.git/arch/alpha/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/alpha/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/alpha/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -52,10 +52,12 @@ SECTIONS
}
__initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(8);
.con_initcall.init : {
Index: linux-2.6.git/arch/arm26/kernel/vmlinux-arm26-xip.lds.in
===================================================================
--- linux-2.6.git.orig/arch/arm26/kernel/vmlinux-arm26-xip.lds.in
2006-12-06 17:08:26.000000000 +0100
+++ linux-2.6.git/arch/arm26/kernel/vmlinux-arm26-xip.lds.in 2006-12-06
17:09:07.000000000 +0100
@@ -46,10 +46,12 @@ SECTIONS
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(32);
__initramfs_start = .;
usr/built-in.o(.init.ramfs)
__initramfs_end = .;
+#endif
. = ALIGN(32768);
__init_end = .;
}
Index: linux-2.6.git/arch/arm26/kernel/vmlinux-arm26.lds.in
===================================================================
--- linux-2.6.git.orig/arch/arm26/kernel/vmlinux-arm26.lds.in 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/arm26/kernel/vmlinux-arm26.lds.in 2006-12-06
17:09:07.000000000 +0100
@@ -47,10 +47,12 @@ SECTIONS
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(32);
__initramfs_start = .;
usr/built-in.o(.init.ramfs)
__initramfs_end = .;
+#endif
. = ALIGN(32768);
__init_end = .;
}
Index: linux-2.6.git/arch/avr32/kernel/vmlinux.lds.c
===================================================================
--- linux-2.6.git.orig/arch/avr32/kernel/vmlinux.lds.c 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/avr32/kernel/vmlinux.lds.c 2006-12-06
17:09:07.000000000 +0100
@@ -46,10 +46,12 @@ SECTIONS
__security_initcall_start = .;
*(.security_initcall.init)
__security_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(32);
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
+#endif
. = ALIGN(4096);
__init_end = .;
}
Index: linux-2.6.git/arch/frv/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/frv/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/frv/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -61,10 +61,12 @@ SECTIONS
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(THREAD_SIZE);
__init_end = .;
Index: linux-2.6.git/arch/h8300/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/h8300/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/h8300/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -125,10 +125,12 @@ SECTIONS
___con_initcall_end = .;
*(.exit.text)
*(.exit.data)
+#if defined(CONFIG_BLK_DEV_INITRAMFS)
. = ALIGN(4);
___initramfs_start = .;
*(.init.ramfs)
___initramfs_end = .;
+#endif
. = ALIGN(0x4) ;
___init_end = .;
__edata = . ;
Index: linux-2.6.git/arch/i386/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/i386/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/i386/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -149,10 +149,12 @@ SECTIONS
from .altinstructions and .eh_frame */
.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(L1_CACHE_BYTES);
__per_cpu_start = .;
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu)
}
Index: linux-2.6.git/arch/ia64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/ia64/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/ia64/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -111,12 +111,14 @@ SECTIONS
.init.data : AT(ADDR(.init.data) - LOAD_OFFSET)
{ *(.init.data) }
+#ifdef CONFIG_BLK_DEV_INITRAMFS
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET)
{
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
+#endif
. = ALIGN(16);
.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET)
Index: linux-2.6.git/arch/m32r/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/m32r/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/m32r/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -99,10 +99,14 @@ SECTIONS
from .altinstructions and .eh_frame */
.exit.text : { *(.exit.text) }
.exit.data : { *(.exit.data) }
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
+
. = ALIGN(32);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
Index: linux-2.6.git/arch/m68k/kernel/vmlinux-std.lds
===================================================================
--- linux-2.6.git.orig/arch/m68k/kernel/vmlinux-std.lds 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/m68k/kernel/vmlinux-std.lds 2006-12-06
17:09:07.000000000 +0100
@@ -61,10 +61,12 @@ SECTIONS
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(8192);
__init_end = .;
Index: linux-2.6.git/arch/m68k/kernel/vmlinux-sun3.lds
===================================================================
--- linux-2.6.git.orig/arch/m68k/kernel/vmlinux-sun3.lds 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/m68k/kernel/vmlinux-sun3.lds 2006-12-06
17:09:07.000000000 +0100
@@ -55,10 +55,12 @@ __init_begin = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(8192);
__init_end = .;
.data.init.task : { *(.data.init_task) }
Index: linux-2.6.git/arch/m68knommu/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/m68knommu/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/m68knommu/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -148,10 +148,12 @@ SECTIONS {
__security_initcall_start = .;
*(.security_initcall.init)
__security_initcall_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4);
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
+#endif
. = ALIGN(4096);
__init_end = .;
} > INIT
Index: linux-2.6.git/arch/mips/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/mips/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/mips/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -112,10 +112,12 @@ SECTIONS
/* .exit.text is discarded at runtime, not link time, to deal with
references from .rodata */
.exit.text : { *(.exit.text) }
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(_PAGE_SIZE);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(32);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
Index: linux-2.6.git/arch/parisc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/parisc/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/parisc/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -173,10 +173,12 @@ SECTIONS
from .altinstructions and .eh_frame */
.exit.text : { *(.exit.text) }
.exit.data : { *(.exit.data) }
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(ASM_PAGE_SIZE);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(32);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
Index: linux-2.6.git/arch/powerpc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/powerpc/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/powerpc/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -134,14 +134,14 @@ SECTIONS
__stop___fw_ftr_fixup = .;
}
#endif
-
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
-
+#endif
#ifdef CONFIG_PPC32
. = ALIGN(32);
#else
Index: linux-2.6.git/arch/ppc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/ppc/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/ppc/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -134,10 +134,12 @@ SECTIONS
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
. = ALIGN(4096);
__init_end = .;
Index: linux-2.6.git/arch/s390/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/s390/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/s390/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -90,9 +90,13 @@ SECTIONS
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(256);
__initramfs_start = .;
.init.ramfs : { *(.init.initramfs) }
+#endif
+
. = ALIGN(2);
__initramfs_end = .;
. = ALIGN(256);
Index: linux-2.6.git/arch/sh/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/sh/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/sh/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -83,9 +83,13 @@ SECTIONS
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
+
__machvec_start = .;
.init.machvec : { *(.init.machvec) }
__machvec_end = .;
Index: linux-2.6.git/arch/sh64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/sh64/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/sh64/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -115,11 +115,14 @@ SECTIONS
.con_initcall.init : C_PHYS(.con_initcall.init) { *(.con_initcall.init)
}
__con_initcall_end = .;
SECURITY_INIT
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
__initramfs_start = .;
.init.ramfs : C_PHYS(.init.ramfs) { *(.init.ramfs) }
__initramfs_end = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
+#endif
/* Align to the biggest single data representation, head and tail */
. = ALIGN(8);
Index: linux-2.6.git/arch/sparc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/sparc/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/sparc/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -56,10 +56,14 @@ SECTIONS
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
+
. = ALIGN(32);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
Index: linux-2.6.git/arch/sparc64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/sparc64/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/sparc64/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -80,10 +80,14 @@ SECTIONS
__sun4v_2insn_patch = .;
.sun4v_2insn_patch : { *(.sun4v_2insn_patch) }
__sun4v_2insn_patch_end = .;
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
+
. = ALIGN(8192);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
Index: linux-2.6.git/arch/v850/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/v850/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/v850/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -189,12 +189,16 @@
__root_fs_image_start = . ; \
*(.root) \
__root_fs_image_end = . ;
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
/* The initramfs archive. */
#define INITRAMFS_CONTENTS \
. = ALIGN (4) ; \
___initramfs_start = . ; \
*(.init.ramfs) \
___initramfs_end = . ;
+#endif
+
/* Where the initial bootmap (bitmap for the boot-time memory allocator)
should be place. */
#define BOOTMAP_CONTENTS \
Index: linux-2.6.git/arch/x86_64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/x86_64/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/x86_64/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -198,10 +198,14 @@ SECTIONS
from .altinstructions and .eh_frame */
.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
__initramfs_end = .;
+#endif
+
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
__per_cpu_start = .;
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu)
}
Index: linux-2.6.git/arch/xtensa/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/xtensa/kernel/vmlinux.lds.S 2006-12-06
17:08:26.000000000 +0100
+++ linux-2.6.git/arch/xtensa/kernel/vmlinux.lds.S 2006-12-06
17:09:07.000000000 +0100
@@ -205,10 +205,12 @@ SECTIONS
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
. = ALIGN(4096);
__initramfs_start =.;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
+#endif
/* We need this dummy segment here */
Index: linux-2.6.git/arch/cris/arch-v10/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/cris/arch-v10/vmlinux.lds.S 2006-07-17
12:55:58.000000000 +0200
+++ linux-2.6.git/arch/cris/arch-v10/vmlinux.lds.S 2006-12-06
17:12:36.000000000 +0100
@@ -82,7 +82,8 @@ SECTIONS
__con_initcall_end = .;
}
SECURITY_INIT
-
+
+#ifdef CONFIG_BLK_DEV_INITRAMFS
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
@@ -93,6 +94,7 @@ SECTIONS
FILL (0);
. = ALIGN (8192);
}
+#endif
__vmlinux_end = .; /* last address of the physical file
*/
__init_end = .;
Index: linux-2.6.git/arch/cris/arch-v32/vmlinux.lds.S
===================================================================
--- linux-2.6.git.orig/arch/cris/arch-v32/vmlinux.lds.S 2006-07-17
12:55:58.000000000 +0200
+++ linux-2.6.git/arch/cris/arch-v32/vmlinux.lds.S 2006-12-06
17:10:35.000000000 +0100
@@ -95,6 +95,7 @@ SECTIONS
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
+#ifdef CONFIG_BLK_DEV_INITRAMFS
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
@@ -107,6 +108,7 @@ SECTIONS
FILL (0);
. = ALIGN (8192);
}
+#endif
__vmlinux_end = .; /* Last address of the physical file. */
__init_end = .;
---------------------------
Kind greetings,
Jean-Paul Saman
NXP Semiconductors CTO/RTG DesignIP
-
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