tracing: Fix initial buffer_size_kb state
tracing: Fix initial buffer_size_kb state

Make sure that the state of buffer_size_kb is initialized correctly and
returns actual size of the ring buffer.

Link: http://lkml.kernel.org/r/1336066834-1673-1-git-send-email-1fa667586c90bce718fd3c486c1144f98789d483@google.com

Cc: Frederic Weisbecker <e8a1bf9163cb25e93cfd6540f223b3872ea7ee55@gmail.com>
Cc: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@redhat.com>
Cc: Laurent Chavey <60542c4cb03aae1cf6ad41687a3d3000302bb616@google.com>
Cc: Justin Teravest <f2d83486a72e2fb2fbfb163be787ddf5d8d3393e@google.com>
Cc: David Sharp <d17c0a8430b0bd65a7a6ae309f7a3dc190d92668@google.com>
Signed-off-by: Vaibhav Nagarnaik <1fa667586c90bce718fd3c486c1144f98789d483@google.com>
Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs