From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 23 Jul 2013 15:26:03 +0000 (+0200)
Subject: tracing: Change tracing_stats_fops to rely on tracing_get_cpu()
X-Git-Tag: v3.11-rc3~2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d3435b8a4c3357695e09c5e7a3bf73a19fca5b0;p=pandora-kernel.git

tracing: Change tracing_stats_fops to rely on tracing_get_cpu()

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

1. Change one of its users, tracing_stats_fops, to use
   tracing_*_generic_tr() instead.

2. Change trace_create_cpu_file("stats", data) to pass "data = tr".

3. Change tracing_stats_read() to use tracing_get_cpu().

Link: http://lkml.kernel.org/r/20130723152603.GA23727@redhat.com

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