Hi, Looking into task_struct (include/linux/scehd.h) , we have: /* PI waiters blocked on a rt_mutex held by this task */ struct plist_head pi_waiters; Any ideas what "pi" stand for ? I assume it has nothing to do with "pi" from mathematics... rgs. Kevin _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies