From c521efd1700a8c0f7ce26f011f5eaecca17fabfa Mon Sep 17 00:00:00 2001
From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 7 Dec 2009 09:06:24 -0500
Subject: [PATCH] tracing: Add pipe_close interface

An ftrace plugin can add a pipe_open interface when the user opens
trace_pipe. But if the plugin allocates something within the pipe_open
it can not free it because there exists no pipe_close. The hook to
the trace file open has a corresponding close. The closing of the
trace_pipe file should also have a corresponding close.

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