powerpc: ftrace, convert to new dynamic ftrace arch API

Impact: update to PowerPC ftrace arch API

This patch converts PowerPC to use the new dynamic ftrace arch API.

Thanks to Paul Mackennas for pointing out the mistakes of my original
test_24bit_addr function.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index b298f7a631e6..17efecc2bf03 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -7,7 +7,19 @@
 
 #ifndef __ASSEMBLY__
 extern void _mcount(void);
-#endif
+
+#ifdef CONFIG_DYNAMIC_FTRACE
+static inline unsigned long ftrace_call_adjust(unsigned long addr)
+{
+       /* reloction of mcount call site is the same as the address */
+       return addr;
+}
+
+struct dyn_arch_ftrace {
+        /* nothing yet */
+};
+#endif /*  CONFIG_DYNAMIC_FTRACE */
+#endif /* __ASSEMBLY__ */
 
 #endif