tracing/ring-buffer: Only have tracing_on disable tracing buffers

As the ring-buffer code is being used by other facilities in the
kernel, having tracing_on file disable *all* buffers is not a desired
affect. It should only disable the ftrace buffers that are being used.

Move the code into the trace.c file and use the buffer disabling
for tracing_on() and tracing_off(). This way only the ftrace buffers
will be affected by them and other kernel utilities will not be
confused to why their output suddenly stopped.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 54faec790bc1..ce887c0eca56 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -154,6 +154,7 @@ struct trace_array {
         struct ring_buffer      *buffer;
         unsigned long           entries;
         int                     cpu;
+        int                     buffer_disabled;
         cycle_t                 time_start;
         struct task_struct      *waiter;
         struct trace_array_cpu  *data[NR_CPUS];