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Message-Id: <1249073873-30028-3-git-send-email-tabbott@ksplice.com>
Date: Fri, 31 Jul 2009 16:57:53 -0400
From: Tim Abbott <tabbott@...lice.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc: Sam Ravnborg <sam@...nborg.org>,
Anders Kaseorg <andersk@...lice.com>,
Nelson Elhage <nelhage@...lice.com>,
Tony Luck <tony.luck@...el.com>, linux-ia64@...r.kernel.org
Subject: [PATCH 3/3] ia64: Clean up linker script using standard macros.
From: Nelson Elhage <nelhage@...lice.com>
Aside from using fewer output sections and moving some data around,
the main side effect of this change is changing the alignment of some
sections. In particular:
* cachline-aligned and read_mostly data are now aligned to
SMP_CACHE_BYTES. (Previously, they were laid out consecutively after
a PAGE_SIZE alignment)
* .init.ramfs is now page-aligned, per the INIT_RAM_FS
macro. (Previously it had no explicit alignment).
Signed-off-by: Nelson Elhage <nelhage@...lice.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: linux-ia64@...r.kernel.org
---
arch/ia64/kernel/vmlinux.lds.S | 109 ++++------------------------------------
1 files changed, 11 insertions(+), 98 deletions(-)
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index b484b86..f69f411 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -64,14 +64,7 @@ SECTIONS
NOTES :code :note /* put .notes in text and mark in PT_NOTE */
code_continues : {} :code /* switch back to regular program... */
- /* Exception table */
- . = ALIGN(16);
- __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET)
- {
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
+ EXCEPTION_TABLE(16)
/* MCA table */
. = ALIGN(16);
@@ -113,38 +106,9 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
__init_begin = .;
- .init.text : AT(ADDR(.init.text) - LOAD_OFFSET)
- {
- _sinittext = .;
- INIT_TEXT
- _einittext = .;
- }
-
- .init.data : AT(ADDR(.init.data) - LOAD_OFFSET)
- { INIT_DATA }
-
-#ifdef CONFIG_BLK_DEV_INITRD
- .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)
- {
- __setup_start = .;
- *(.init.setup)
- __setup_end = .;
- }
- .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET)
- {
- __initcall_start = .;
- INITCALLS
- __initcall_end = .;
- }
+ INIT_TEXT_SECTION(PAGE_SIZE)
+ INIT_DATA_SECTION(16)
.data.patch.vtop : AT(ADDR(.data.patch.vtop) - LOAD_OFFSET)
{
@@ -202,22 +166,9 @@ SECTIONS
}
#endif
- . = ALIGN(8);
- __con_initcall_start = .;
- .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET)
- { *(.con_initcall.init) }
- __con_initcall_end = .;
- __security_initcall_start = .;
- .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET)
- { *(.security_initcall.init) }
- __security_initcall_end = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
- /* The initial task and kernel stack */
- .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET)
- { *(.data.init_task) }
-
.data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET)
{
PAGE_ALIGNED_DATA(PAGE_SIZE)
@@ -236,12 +187,6 @@ SECTIONS
* kernel data
*/
- .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET)
- { *(.data.read_mostly) }
-
- .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET)
- { *(.data.cacheline_aligned) }
-
/* Per-cpu data: */
. = ALIGN(PERCPU_PAGE_SIZE);
PERCPU_VADDR(PERCPU_ADDR, :percpu)
@@ -258,6 +203,9 @@ SECTIONS
__cpu0_per_cpu = .;
. = . + PERCPU_PAGE_SIZE; /* cpu0 per-cpu space */
#endif
+ INIT_TASK_DATA(PAGE_SIZE)
+ CACHELINE_ALIGNED_DATA(SMP_CACHE_BYTES)
+ READ_MOSTLY_DATA(SMP_CACHE_BYTES)
DATA_DATA
*(.data1)
*(.gnu.linkonce.d*)
@@ -274,49 +222,14 @@ SECTIONS
.sdata : AT(ADDR(.sdata) - LOAD_OFFSET)
{ *(.sdata) *(.sdata1) *(.srdata) }
_edata = .;
- __bss_start = .;
- .sbss : AT(ADDR(.sbss) - LOAD_OFFSET)
- { *(.sbss) *(.scommon) }
- .bss : AT(ADDR(.bss) - LOAD_OFFSET)
- { *(.bss) *(COMMON) }
- __bss_stop = .;
+
+ BSS_SECTION(0, 0, 0)
_end = .;
code : { } :code
- /* Stabs debugging sections. */
- .stab 0 : { *(.stab) }
- .stabstr 0 : { *(.stabstr) }
- .stab.excl 0 : { *(.stab.excl) }
- .stab.exclstr 0 : { *(.stab.exclstr) }
- .stab.index 0 : { *(.stab.index) }
- .stab.indexstr 0 : { *(.stab.indexstr) }
- /* DWARF debug sections.
- Symbols in the DWARF debugging sections are relative to the beginning
- of the section so we begin them at 0. */
- /* DWARF 1 */
- .debug 0 : { *(.debug) }
- .line 0 : { *(.line) }
- /* GNU DWARF 1 extensions */
- .debug_srcinfo 0 : { *(.debug_srcinfo) }
- .debug_sfnames 0 : { *(.debug_sfnames) }
- /* DWARF 1.1 and DWARF 2 */
- .debug_aranges 0 : { *(.debug_aranges) }
- .debug_pubnames 0 : { *(.debug_pubnames) }
- /* DWARF 2 */
- .debug_info 0 : { *(.debug_info) }
- .debug_abbrev 0 : { *(.debug_abbrev) }
- .debug_line 0 : { *(.debug_line) }
- .debug_frame 0 : { *(.debug_frame) }
- .debug_str 0 : { *(.debug_str) }
- .debug_loc 0 : { *(.debug_loc) }
- .debug_macinfo 0 : { *(.debug_macinfo) }
- /* SGI/MIPS DWARF 2 extensions */
- .debug_weaknames 0 : { *(.debug_weaknames) }
- .debug_funcnames 0 : { *(.debug_funcnames) }
- .debug_typenames 0 : { *(.debug_typenames) }
- .debug_varnames 0 : { *(.debug_varnames) }
- /* These must appear regardless of . */
- /DISCARD/ : { *(.comment) }
+
+ STABS_DEBUG
+ DWARF_DEBUG
/DISCARD/ : { *(.note) }
}
--
1.6.3.3
--
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