---
 drivers/cpufreq/intel_pstate.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-pm/drivers/cpufreq/intel_pstate.c
===================================================================
--- linux-pm.orig/drivers/cpufreq/intel_pstate.c
+++ linux-pm/drivers/cpufreq/intel_pstate.c
@@ -989,6 +989,10 @@ static inline int32_t get_target_pstate_
 		sample_ratio = div_fp(int_tofp(pid_params.sample_rate_ns),
 				      int_tofp(duration_ns));
 		core_busy = mul_fp(core_busy, sample_ratio);
+	} else {
+		sample_ratio = div_fp(cpu->sample.mperf * 100, cpu->sample.tsc);
+		if (sample_ratio < int_tofp(2))
+			core_busy = mul_fp(core_busy, sample_ratio);
 	}
 
 	cpu->sample.busy_scaled = core_busy;