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intel_pstate: fix no_turbo
When sysfs for no_turbo is set, then also some p states in turbo regions are observed. This patch will set IDA Engage bit when no_turbo is set to explicitly disengage turbo. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -394,7 +394,10 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
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trace_cpu_frequency(pstate * 100000, cpu->cpu);
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cpu->pstate.current_pstate = pstate;
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wrmsrl(MSR_IA32_PERF_CTL, pstate << 8);
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if (limits.no_turbo)
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wrmsrl(MSR_IA32_PERF_CTL, BIT(32) | (pstate << 8));
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else
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wrmsrl(MSR_IA32_PERF_CTL, pstate << 8);
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}
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