ftrace: avoid duplicated function when writing set_graph_function
authorLiming Wang <liming.wang@windriver.com>
Thu, 4 Dec 2008 06:24:49 +0000 (14:24 +0800)
committerIngo Molnar <mingo@elte.hu>
Thu, 4 Dec 2008 08:42:35 +0000 (09:42 +0100)
Impact: fix a bug in function filter setting

when writing function to set_graph_function, we should check whether it
has existed in set_graph_function to avoid duplicating.

Signed-off-by: Liming Wang <liming.wang@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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