cpufreq/amd-pstate: Fix prefcore rankings

JIRA: https://issues.redhat.com/browse/RHEL-75923

commit fd604ae
Author: Mario Limonciello <[email protected]>
Date:   Thu Jan 2 08:12:04 2025 -0600

    cpufreq/amd-pstate: Fix prefcore rankings

    commit 50a062a ("cpufreq/amd-pstate: Store the boost numerator as
    highest perf again") updated the value stored for highest perf to no longer
    store the highest perf value but instead the boost numerator.

    This is a fixed value for systems with preferred cores and not appropriate
    for use ITMT rankings. Update the value used for ITMT rankings to be the
    preferred core ranking.

    Reported-and-tested-by: Sebastian <[email protected]>
    Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219640
    Fixes: 50a062a ("cpufreq/amd-pstate: Store the boost numerator as highest perf again")
    Reviewed-by: Dhananjay Ugwekar <[email protected]>
    Link: https://lore.kernel.org/r/[email protected]
    Signed-off-by: Mario Limonciello <[email protected]>

Signed-off-by: David Arcari <[email protected]>

Author: darcari

drivers/cpufreq/amd-pstate.c

@@ -815,7 +815,7 @@ static void amd_pstate_init_prefcore(struct amd_cpudata *cpudata)
 	 * sched_set_itmt_support(true) has been called and it is valid to
 	 * update them at any time after it has been called.
 	 */
-	sched_set_itmt_core_prio((int)READ_ONCE(cpudata->highest_perf), cpudata->cpu);
+	sched_set_itmt_core_prio((int)READ_ONCE(cpudata->prefcore_ranking), cpudata->cpu);
 
 	schedule_work(&sched_prefcore_work);
 }