From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 23 Jul 2013 15:25:57 +0000 (+0200)
Subject: tracing: Change tracing_pipe_fops() to rely on tracing_get_cpu()
X-Git-Tag: v3.11-rc3~2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=15544209cb0b5312e5220a9337a1fe61d1a1f2d9;p=pandora-kernel.git

tracing: Change tracing_pipe_fops() to rely on tracing_get_cpu()

tracing_open_pipe() is racy, the memory inode->i_private points to
can be already freed.

Change debugfs_create_file("trace_pipe", data) callers to to pass
"data = tr", tracing_open_pipe() can use tracing_get_cpu().

Link: http://lkml.kernel.org/r/20130723152557.GA23717@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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