This is an updated version of the patch I sent on September 6 cleaning
up the powerpc architecture's linker scripts. The only change is that
it is rebased on top of Linus's current master.
This cross-architecture linker script cleanup project is in
preparation for adding support for building the kernel with
-ffunction-sections -fdata-sections, which is a prerequisite for
Ksplice.
-Tim Abbott
Tim Abbott (1):
powerpc: Cleanup linker script using new linker script macros.
arch/powerpc/kernel/vmlinux.lds.S | 69 ++++++++-----------------------------
1 files changed, 15 insertions(+), 54 deletions(-)
Signed-off-by: Tim Abbott <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: [email protected]
Cc: Sam Ravnborg <[email protected]>
---
arch/powerpc/kernel/vmlinux.lds.S | 69 ++++++++-----------------------------
1 files changed, 15 insertions(+), 54 deletions(-)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 58da407..f564293 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -6,6 +6,7 @@
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
+#include <asm/thread_info.h>
ENTRY(_stext)
@@ -71,12 +72,7 @@ SECTIONS
/* Read-only data */
RODATA
- /* Exception & bug tables */
- __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
+ EXCEPTION_TABLE(0)
NOTES :kernel :notes
@@ -93,12 +89,7 @@ SECTIONS
*/
. = ALIGN(PAGE_SIZE);
__init_begin = .;
-
- .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
- _sinittext = .;
- INIT_TEXT
- _einittext = .;
- } :kernel
+ INIT_TEXT_SECTION(PAGE_SIZE) :kernel
/* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
@@ -122,23 +113,16 @@ SECTIONS
#endif
}
- . = ALIGN(16);
.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
- __setup_start = .;
- *(.init.setup)
- __setup_end = .;
+ INIT_SETUP(16)
}
.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
- __initcall_start = .;
- INITCALLS
- __initcall_end = .;
- }
+ INIT_CALLS
+ }
.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
- __con_initcall_start = .;
- *(.con_initcall.init)
- __con_initcall_end = .;
+ CON_INITCALL
}
SECURITY_INIT
@@ -169,14 +153,10 @@ SECTIONS
__stop___fw_ftr_fixup = .;
}
#endif
-#ifdef CONFIG_BLK_DEV_INITRD
- . = ALIGN(PAGE_SIZE);
.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
- __initramfs_start = .;
- *(.init.ramfs)
- __initramfs_end = .;
+ INIT_RAM_FS
}
-#endif
+
PERCPU(PAGE_SIZE)
. = ALIGN(8);
@@ -240,36 +220,24 @@ SECTIONS
#endif
/* The initial task and kernel stack */
-#ifdef CONFIG_PPC32
- . = ALIGN(8192);
-#else
- . = ALIGN(16384);
-#endif
.data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
- *(.data.init_task)
+ INIT_TASK_DATA(THREAD_SIZE)
}
- . = ALIGN(PAGE_SIZE);
.data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
- *(.data.page_aligned)
+ PAGE_ALIGNED_DATA(PAGE_SIZE)
}
- . = ALIGN(L1_CACHE_BYTES);
.data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
- *(.data.cacheline_aligned)
+ CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
}
- . = ALIGN(L1_CACHE_BYTES);
.data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
- *(.data.read_mostly)
+ READ_MOSTLY_DATA(L1_CACHE_BYTES)
}
- . = ALIGN(PAGE_SIZE);
.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
- __nosave_begin = .;
- *(.data.nosave)
- . = ALIGN(PAGE_SIZE);
- __nosave_end = .;
+ NOSAVE_DATA
}
. = ALIGN(PAGE_SIZE);
@@ -280,14 +248,7 @@ SECTIONS
* And finally the bss
*/
- .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
- __bss_start = .;
- *(.sbss) *(.scommon)
- *(.dynbss)
- *(.bss)
- *(COMMON)
- __bss_stop = .;
- }
+ BSS_SECTION(0, 0, 0)
. = ALIGN(PAGE_SIZE);
_end = . ;
--
1.6.3.3
On Tue, Sep 22, 2009 at 11:18:09AM -0400, Tim Abbott wrote:
> Signed-off-by: Tim Abbott <[email protected]>
> Cc: Benjamin Herrenschmidt <[email protected]>
> Cc: Paul Mackerras <[email protected]>
> Cc: [email protected]
> Cc: Sam Ravnborg <[email protected]>
Look good.
Acked-by: Sam Ravnborg <[email protected]>
Sam