[patch 2/5] powerpc 2.6.21-rt1: dummy functions and export _mcount to compile

[Tsutomu OWA]

add dummy functions save_stack_trace(), early_printk() for now and
export _mcount to compile.

Signed-off-by: Tsutomu OWA <tsutomu.owa at toshiba.co.jp>
-- owa

diff -rup linux-2.6.21-rt1/arch/powerpc/kernel/setup_64.c rt/arch/powerpc/kernel/setup_64.c
--- linux-2.6.21-rt1/arch/powerpc/kernel/setup_64.c	2007-04-26 12:08:32.000000000 +0900
+++ rt/arch/powerpc/kernel/setup_64.c	2007-05-08 18:50:46.000000000 +0900
@@ -606,3 +606,22 @@ struct ppc_pci_io ppc_pci_io;
 EXPORT_SYMBOL(ppc_pci_io);
 #endif /* CONFIG_PPC_INDIRECT_IO */
 
+#ifdef CONFIG_STACKTRACE
+#include <linux/stacktrace.h>
+void notrace save_stack_trace(struct stack_trace *trace,
+		      struct task_struct *task)
+{
+}
+#endif /* CONFIG_STACKTRACE */
+
+#ifdef CONFIG_EARLY_PRINTK
+void notrace early_printk(const char *fmt, ...)
+{
+	BUG();
+}
+#endif /* CONFIG_EARLY_PRINTK */
+
+#ifdef CONFIG_MCOUNT
+extern void _mcount(void);
+EXPORT_SYMBOL(_mcount);
+#endif /* CONFIG_MCOUNT */