RTEMS | Draft: cpukit: Create DHRL Library for DRAM Latency Mitigation (!1193)

[Wayne Thornton (@wmthornton-dev)]

Wayne Thornton commented on a discussion on cpukit/dhrl/dhrl.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1193#note_148417

 > +
 > +  // Initialize Worker B
 > +  sc = rtems_task_create(
 > +    rtems_build_name( 'D', 'H', 'R', 'B' ),
 > +    priority,
 > +    RTEMS_MINIMUM_STACK_SIZE,
 > +    RTEMS_DEFAULT_MODES,
 > +    RTEMS_DEFAULT_ATTRIBUTES,
 > +    &dhrl_worker_b_id
 > +  );
 > +  if ( sc != RTEMS_SUCCESSFUL ) {
 > +    return sc;
 > +  }
 > +
 > +  CPU_ZERO( &cpuset );
 > +  CPU_SET( core_b, &cpuset );

The dhrl_init function checks the return code of rtems_task_set_affinity and will safely abort if the scheduler fails to apply the CPU mask. Do you recall which specific SMP scheduler algorithm might be missing the operation so I can ensure my test suite catches that edge case?

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1193#note_148417
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