ftrace: core support for ARM

Core ftrace support for the ARM architecture, which includes support
for dynamic function tracing.

Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 688b7b1ee416..3b132215cbf8 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -48,6 +48,11 @@ extern void __aeabi_ulcmp(void);
 extern void fpundefinstr(void);
 extern void fp_enter(void);
 
+#ifdef CONFIG_FTRACE
+extern void mcount(void);
+EXPORT_SYMBOL(mcount);
+#endif
+
 /*
  * This has a special calling convention; it doesn't
  * modify any of the usual registers, except for LR.