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    Subject[PATCH 1/5] sched/pci: Reduce psimon FIFO priority
    PSI defaults to a FIFO-99 thread, reduce this to FIFO-1.

    FIFO-99 is the very highest priority available to SCHED_FIFO and
    it not a suitable default; it would indicate the psi work is the
    most important work on the machine.

    Since Real-Time tasks will have pre-allocated memory and locked it in
    place, Real-Time tasks do not care about PSI. All it needs is to be
    above OTHER.

    Cc: Suren Baghdasaryan <surenb@google.com>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    ---
    kernel/sched/psi.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/kernel/sched/psi.c
    +++ b/kernel/sched/psi.c
    @@ -1051,7 +1051,7 @@ struct psi_trigger *psi_trigger_create(s

    if (!rcu_access_pointer(group->poll_kworker)) {
    struct sched_param param = {
    - .sched_priority = MAX_RT_PRIO - 1,
    + .sched_priority = 1,
    };
    struct kthread_worker *kworker;


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