Merge tag 'trace-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...

[firefly-linux-kernel-4.4.55.git] / arch / arm / kernel / ftrace.c

diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index c108ddcb9ba405cb5c53b00807a18355fc2cf4c6..af9a8a927a4e9624636f008cc28415e97482803a 100644 (file)
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -14,6 +14,7 @@
 
 #include <linux/ftrace.h>
 #include <linux/uaccess.h>
+#include <linux/module.h>
 
 #include <asm/cacheflush.h>
 #include <asm/opcodes.h>
@@ -63,6 +64,18 @@ static unsigned long adjust_address(struct dyn_ftrace *rec, unsigned long addr)
 }
 #endif
 
+int ftrace_arch_code_modify_prepare(void)
+{
+       set_all_modules_text_rw();
+       return 0;
+}
+
+int ftrace_arch_code_modify_post_process(void)
+{
+       set_all_modules_text_ro();
+       return 0;
+}
+
 static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr)
 {
        return arm_gen_branch_link(pc, addr);