Messages in this thread Patch in this message | | | From | yuan linyu <> | Subject | [PATCH for-next v2] tracing: optimize trace_buffer_iter() | Date | Sun, 8 Apr 2018 19:36:31 +0800 |
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From: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn>
use conditional operation.
Signed-off-by: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn> --- kernel/trace/trace.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 6fb46a06c9dc..bda717ab2095 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -582,9 +582,7 @@ static __always_inline void trace_clear_recursion(int bit) static inline struct ring_buffer_iter * trace_buffer_iter(struct trace_iterator *iter, int cpu) { - if (iter->buffer_iter && iter->buffer_iter[cpu]) - return iter->buffer_iter[cpu]; - return NULL; + return iter->buffer_iter ? iter->buffer_iter[cpu] : NULL; } int tracer_init(struct tracer *t, struct trace_array *tr); -- 2.14.1
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