tools/power/x86/intel-speed-select: Set higher of cpuinfo_max_freq or…

… base_frequency

In some case when BIOS disabled turbo, cpufreq cpuinfo_max_freq can be
lower than base_frequency at higher config level. So, in that case set
scaling_min_freq to base_frequency.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20201221071859.2783957-3-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

tools/power/x86/intel-speed-select/isst-config.c

@@ -1461,6 +1461,16 @@ static void adjust_scaling_max_from_base_freq(int cpu)
 		set_cpufreq_scaling_min_max(cpu, 1, base_freq);
 }
 
+static void adjust_scaling_min_from_base_freq(int cpu)
+{
+	int base_freq, scaling_min_freq;
+
+	scaling_min_freq = parse_int_file(0, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_min_freq", cpu);
+	base_freq = get_cpufreq_base_freq(cpu);
+	if (scaling_min_freq < base_freq)
+		set_cpufreq_scaling_min_max(cpu, 0, base_freq);
+}
+
 static int set_clx_pbf_cpufreq_scaling_min_max(int cpu)
 {
 	struct isst_pkg_ctdp_level_info *ctdp_level;
@@ -1558,6 +1568,7 @@ static void set_scaling_min_to_cpuinfo_max(int cpu)
 			continue;
 
 		set_cpufreq_scaling_min_max_from_cpuinfo(i, 1, 0);
+		adjust_scaling_min_from_base_freq(i);
 	}
 }