cpufreq: intel_pstate: Clear hybrid_max_perf_cpu before driver registration

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Modify intel_pstate_register_driver() to clear hybrid_max_perf_cpu
before calling cpufreq_register_driver(), so that asymmetric CPU
capacity scaling is not updated until hybrid_init_cpu_capacity_scaling()
runs down the road.  This is done in preparation for a subsequent
change adding asymmetric CPU capacity computation to the CPU init path
to handle CPUs that are initially offline.

The information on whether or not hybrid_max_perf_cpu was NULL before
it has been cleared is passed to hybrid_init_cpu_capacity_scaling(),
so full initialization of CPU capacity scaling can be skipped if it
has been carried out already.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/4616631.LvFx2qVVIh@rjwysocki.net

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Rafael J. Wysocki 2024-11-04 19:51:28 +01:00

parent 59b723cd2a

commit a97e293e07

1 changed files with 18 additions and 3 deletions

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drivers/cpufreq/intel_pstate.c

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