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cpufreq/amd-pstate: Remove the unnecessary cpufreq_update_policy call

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The update_limits callback is only called in two conditions.

* When the preferred core rankings change. In which case, we just need to
change the prefcore ranking in the cpudata struct. As there are no changes
to any of the perf values, there is no need to call cpufreq_update_policy()

* When the _PPC ACPI object changes, i.e. the highest allowed Pstate
changes. The _PPC object is only used for a table based cpufreq driver
like acpi-cpufreq, hence is irrelevant for CPPC based amd-pstate.

Hence, the cpufreq_update_policy() call becomes unnecessary and can be
removed.

Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Link: https://lore.kernel.org/r/20250205112523.201101-9-dhananjay.ugwekar@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Dhananjay Ugwekar 2025-02-05 11:25:19 +00:00 committed by Mario Limonciello
parent 620136ced3
commit b899434857
1 changed files with 0 additions and 4 deletions
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4
drivers/cpufreq/amd-pstate.c
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@ -853,10 +853,6 @@ static void amd_pstate_update_limits(unsigned int cpu)
sched_set_itmt_core_prio((int)cur_high, cpu);
}
cpufreq_cpu_put(policy);
if (!highest_perf_changed)
cpufreq_update_policy(cpu);
}
/*