[LTP] [PATCH] sched_football: fix false failures on many-CPU systems

[Li Wang]

Soma Das <somadas1@linux.ibm.com> wrote:

> Based on the feedback, here is what I plan to incorporate in v2:
>
>   * Pin only defense threads (one per CPU), leave offense unpinned
>
>   * Replace |get_numcpus()| with |tst_ncpus_available()| to handle
>     offline CPUs
>
>   * Drop the RT throttle disabling entirely - unnecessary once defense
>     is pinned per CPU
>
>   * Remove the |usleep()| / |tst_check_preempt_rt()| block after kickoff
>
>   * Add |join_threads()| before |pthread_barrier_destroy()| for clean
>     |-i N| reruns (thanks Jan for catching this)
>
>   * Split into separate patches - at minimum fixes #3 and #4 will be
>     separate
>
>   * Update commit message to clarify the test now verifies per-CPU
>     SCHED_FIFO priority ordering

Generally that's my expected revision, but I would suggest you wait for
John's reply to see if he has other suggestions.
(John is an expert in schedulers :)

But you can test the v2 on your side and feedback here firstly.


-- 
Regards,
Li Wang