ppc64: fix dump_stack

arch/ppc64/kernel/process.c

@@ -43,6 +43,7 @@
 #include <asm/ppcdebug.h>
 #include <asm/machdep.h>
 #include <asm/iSeries/HvCallHpt.h>
+#include <asm/hardirq.h>
 
 struct task_struct *last_task_used_math = NULL;
 
@@ -485,3 +486,8 @@ void show_trace_task(struct task_struct *p)
 	} while (count++ < 16);
 	printk("\n");
 }
+
+void dump_stack(void)
+{
+	show_stack(NULL);
+}

include/asm-ppc64/hardirq.h

@@ -112,6 +112,4 @@ do {						\
 		print_backtrace(_get_SP());	\
 } while (0)
 
-#define dump_stack()	show_stack()
-
 #endif /* __ASM_HARDIRQ_H */