ftrace: improve seq_operation of ftrace
Impact: make ftrace position computing more sane First remove useless ->pos field. Then we needn't check seq_printf in .show like other place. Signed-off-by: NLiming Wang <liming.wang@windriver.com> Reviewed-by: NBruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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