tracing: Use pr_warn_once instead of open coded implementation
authorzhangwei(Jovi) <jovi.zhangwei@huawei.com>
Mon, 11 Mar 2013 07:13:29 +0000 (15:13 +0800)
committerSteven Rostedt <rostedt@goodmis.org>
Fri, 15 Mar 2013 17:22:05 +0000 (13:22 -0400)
Use pr_warn_once, instead of making an open coded implementation.

Link: http://lkml.kernel.org/r/513D8419.20400@huawei.com
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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