From: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com
[ Upstream commit bbaa2e95e23e74791dd75b90d5ad9aad535acc6e ]
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... Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/power/x86/intel-speed-select/isst-config.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c index 97755f35d9910..ead9e51f75ada 100644 --- a/tools/power/x86/intel-speed-select/isst-config.c +++ b/tools/power/x86/intel-speed-select/isst-config.c @@ -1457,6 +1457,16 @@ 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; @@ -1554,6 +1564,7 @@ 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); } }