On 2019-03-18 01:41:10 [+0000], Liu, Yongxin wrote: > > Consider the recursive call to nd_region_acquire_lane() in the following situation. > Will there be a dead lock? > > > Thread A Thread B > | | > | | > CPU 1 CPU 2 > | | > | | > get lock for Lane 1 get lock for Lane 2 > | | > | | > migrate to CPU 2 migrate to CPU 1 > | | > | | > wait lock for Lane 2 wait lock for Lane 1 > | | > | | > _____________________________ > | > dead lock ? Bummer. That would dead lock indeed. Is it easily possible to recognize the recursive case? > > Thanks, > Yognxin Sebastian
