x86: move tracedata to RODATA

.. allowing it to be write-protected just as other read-only data
under CONFIG_DEBUG_RODATA.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/asm-generic/vmlinux.lds.h

@@ -93,6 +93,8 @@
 		VMLINUX_SYMBOL(__end_rio_route_ops) = .;		\
 	}								\
 									\
+	TRACEDATA							\
+									\
 	/* Kernel symbol table: Normal symbols */			\
 	__ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {		\
 		VMLINUX_SYMBOL(__start___ksymtab) = .;			\
@@ -318,6 +320,18 @@
 		__stop___bug_table = .;					\
 	}
 
+#ifdef CONFIG_PM_TRACE
+#define TRACEDATA							\
+	. = ALIGN(4);							\
+	.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {		\
+	  	__tracedata_start = .;					\
+		*(.tracedata)						\
+	  	__tracedata_end = .;					\
+	}
+#else
+#define TRACEDATA
+#endif
+
 #define NOTES								\
 	.notes : AT(ADDR(.notes) - LOAD_OFFSET) {			\
 		VMLINUX_SYMBOL(__start_notes) = .;			\