Atomic allocation is not needed here.

[ Impact: clean up of memory alloction type ]
Acked-by: NFrederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A35B898.2050607@cn.fujitsu.com>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>