From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 16 Apr 2012 19:41:28 +0000 (-0400)
Subject: tracing: Fix regression with tracing_on
X-Git-Tag: v3.4-rc5~18^2~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=348f0fc238efb441a28e7644c51f9fd3001b228a;p=pandora-kernel.git

tracing: Fix regression with tracing_on

The change to make tracing_on affect only the ftrace ring buffer, caused
a bug where it wont affect any ring buffer. The problem was that the buffer
of the trace_array was passed to the write function and not the trace array
itself.

The trace_array can change the buffer when running a latency tracer. If this
happens, then the buffer being disabled may not be the buffer currently used
by ftrace. This will cause the tracing_on file to become useless.

The simple fix is to pass the trace_array to the write function instead of
the buffer. Then the actual buffer may be changed.

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

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