tracing: Add helper function tracing_is_disabled()
This patch creates the function 'tracing_is_disabled', which
can be used outside of trace.c.
Link: http://lkml.kernel.org/r/1382141754-12155-1-git-send-email-geyslan@gmail.com
Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index eaacd3a..2a595cf 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2987,6 +2987,11 @@
return 0;
}
+bool tracing_is_disabled(void)
+{
+ return (tracing_disabled) ? true: false;
+}
+
/*
* Open and update trace_array ref count.
* Must have the current trace_array passed to it.
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 9c27cda..4388e16 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -514,6 +514,7 @@
void tracing_reset_current(int cpu);
void tracing_reset_all_online_cpus(void);
int tracing_open_generic(struct inode *inode, struct file *filp);
+bool tracing_is_disabled(void);
struct dentry *trace_create_file(const char *name,
umode_t mode,
struct dentry *parent,