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lockdep: Improve implementation of BFS
1,replace %MAX_CIRCULAR_QUE_SIZE with &(MAX_CIRCULAR_QUE_SIZE-1) since we define MAX_CIRCULAR_QUE_SIZE as power of 2; 2,use bitmap to mark if a lock is accessed in BFS in order to clear it quickly, because we may search a graph many times. Signed-off-by: Ming Lei <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
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