attr

    Thread attributes object whose inherit scheduling attribute is to
    be modified.

 inheritsched

    New value for the inherit scheduling attribute. Valid values are
    as follows:

       PTHREAD_INHERIT_      The created thread inherits the
       SCHED                 scheduling policy and associated
                             scheduling attributes of the thread
                             calling pthread_create(). Any scheduling
                             attributes in the attributes object
                             specified by the pthread_create() attr
                             argument are ignored during thread
                             creation. This is the default value.
       PTHREAD_EXPLICIT_     The scheduling policy and associated
       SCHED                 scheduling attributes of the created
                             thread are set to the corresponding
                             values from the attribute object
                             specified by the pthread_create()  attr
                             argument.