tracing: Remove unused function ftrace_off_permanent()

In the past, ftrace_off_permanent() was called if something
strange was detected. But the ftrace_bug() now handles all the
anomolies that can happen with ftrace (function tracing), and there
are no uses of ftrace_off_permanent(). Get rid of it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 672ddc4de4af0511b20a4d269bcae1c517c3d5c4..d4e98d13eff4bda01b08313986b63135cc80ee2b 100644 (file)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -501,7 +501,6 @@ void tracing_snapshot_alloc(void);
 
 extern void tracing_start(void);
 extern void tracing_stop(void);
-extern void ftrace_off_permanent(void);
 
 static inline __printf(1, 2)
 void ____trace_printk_check_format(const char *fmt, ...)
@@ -639,7 +638,6 @@ extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode);
 #else
 static inline void tracing_start(void) { }
 static inline void tracing_stop(void) { }
-static inline void ftrace_off_permanent(void) { }
 static inline void trace_dump_stack(int skip) { }
 
 static inline void tracing_on(void) { }

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 2a595cf14f1c3ecbb86ee766ca5536db23bdf02e..d72a15c0b32c28eee4fd9e244a2469aac44cdd48 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1283,21 +1283,6 @@ int is_tracing_stopped(void)
        return global_trace.stop_count;
 }
 
-/**
- * ftrace_off_permanent - disable all ftrace code permanently
- *
- * This should only be called when a serious anomally has
- * been detected.  This will turn off the function tracing,
- * ring buffers, and other tracing utilites. It takes no
- * locks and can be called from any context.
- */
-void ftrace_off_permanent(void)
-{
-       tracing_disabled = 1;
-       ftrace_stop();
-       tracing_off_permanent();
-}
-
 /**
  * tracing_start - quick start of the tracer
  *