The .eh_frame section contents is never written to, so it can as well
benefit from CONFIG_DEBUG_RODATA.
Diff-ed against firstfloor tree.
Signed-off-by: Jan Beulich <[email protected]>
Index: 2.6.19-ff-unwind-debug-msg/arch/i386/kernel/vmlinux.lds.S
===================================================================
--- 2.6.19-ff-unwind-debug-msg.orig/arch/i386/kernel/vmlinux.lds.S 2006-12-04 15:39:46.000000000 +0100
+++ 2.6.19-ff-unwind-debug-msg/arch/i386/kernel/vmlinux.lds.S 2006-12-04 17:15:50.000000000 +0100
@@ -102,15 +102,6 @@ SECTIONS
_edata = .; /* End of data section */
}
-#ifdef CONFIG_STACK_UNWIND
- . = ALIGN(4);
- .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
- __start_unwind = .;
- *(.eh_frame)
- __end_unwind = .;
- }
-#endif
-
. = ALIGN(THREAD_SIZE); /* init_task */
.data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
*(.data.init_task)
Index: 2.6.19-ff-unwind-debug-msg/arch/x86_64/kernel/vmlinux.lds.S
===================================================================
--- 2.6.19-ff-unwind-debug-msg.orig/arch/x86_64/kernel/vmlinux.lds.S 2006-12-04 15:39:47.000000000 +0100
+++ 2.6.19-ff-unwind-debug-msg/arch/x86_64/kernel/vmlinux.lds.S 2006-12-04 17:15:50.000000000 +0100
@@ -51,15 +51,6 @@ SECTIONS
RODATA
-#ifdef CONFIG_STACK_UNWIND
- . = ALIGN(8);
- .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
- __start_unwind = .;
- *(.eh_frame)
- __end_unwind = .;
- }
-#endif
-
. = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */
/* Data */
.data : AT(ADDR(.data) - LOAD_OFFSET) {
Index: 2.6.19-ff-unwind-debug-msg/include/asm-generic/vmlinux.lds.h
===================================================================
--- 2.6.19-ff-unwind-debug-msg.orig/include/asm-generic/vmlinux.lds.h 2006-12-04 15:39:43.000000000 +0100
+++ 2.6.19-ff-unwind-debug-msg/include/asm-generic/vmlinux.lds.h 2006-12-04 17:15:50.000000000 +0100
@@ -119,8 +119,7 @@
*(__ksymtab_strings) \
} \
\
- /* Unwind data binary search table */ \
- EH_FRAME_HDR \
+ EH_FRAME \
\
/* Built-in module parameters. */ \
__param : AT(ADDR(__param) - LOAD_OFFSET) { \
@@ -162,15 +161,23 @@
VMLINUX_SYMBOL(__kprobes_text_end) = .;
#ifdef CONFIG_STACK_UNWIND
- /* Unwind data binary search table */
-#define EH_FRAME_HDR \
+#define EH_FRAME \
+ /* Unwind data binary search table */ \
+ . = ALIGN(8); \
.eh_frame_hdr : AT(ADDR(.eh_frame_hdr) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start_unwind_hdr) = .; \
*(.eh_frame_hdr) \
VMLINUX_SYMBOL(__end_unwind_hdr) = .; \
+ } \
+ /* Unwind data */ \
+ . = ALIGN(8); \
+ .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__start_unwind) = .; \
+ *(.eh_frame) \
+ VMLINUX_SYMBOL(__end_unwind) = .; \
}
#else
-#define EH_FRAME_HDR
+#define EH_FRAME
#endif
/* DWARF debug sections.
Index: 2.6.19-ff-unwind-debug-msg/kernel/unwind.c
===================================================================
--- 2.6.19-ff-unwind-debug-msg.orig/kernel/unwind.c 2006-12-04 17:11:45.000000000 +0100
+++ 2.6.19-ff-unwind-debug-msg/kernel/unwind.c 2006-12-04 17:15:50.000000000 +0100
@@ -19,7 +19,7 @@
#include <asm/uaccess.h>
#include <asm/unaligned.h>
-extern char __start_unwind[], __end_unwind[];
+extern const char __start_unwind[], __end_unwind[];
extern const u8 __start_unwind_hdr[], __end_unwind_hdr[];
#define MAX_STACK_DEPTH 8
-
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