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authorPrarit Bhargava <prarit@redhat.com>2019-10-10 13:29:45 -0700
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-10-15 11:02:30 +0300
commit1aa7177cdcb38d114e0a80dc27482e645d8068f2 (patch)
treea3ea6eae0c5e8b946974df4ca19f4e244565b0cc /tools/power
parent062e4aac92e8acbab2fd135e90b580b903c3724b (diff)
downloadlinux-1aa7177cdcb38d114e0a80dc27482e645d8068f2.tar.bz2
tools/power/x86/intel-speed-select: Implement base-freq commands on CascadeLake-N
Add functionality for base-freq info|enable|disable info on CascadeLake-N. Sample output: Intel(R) Speed Select Technology Executing on CPU model:85[0x55] package-0 die-0 cpu-0 speed-select-base-freq high-priority-base-frequency(MHz):2700000 high-priority-cpu-mask:00000000,0000e8c0 high-priority-cpu-list:6,7,11,13,14,15 low-priority-base-frequency(MHz):2100000 package-1 die-0 cpu-20 speed-select-base-freq high-priority-base-frequency(MHz):2700000 high-priority-cpu-mask:0000000e,8c000000 high-priority-cpu-list:26,27,31,33,34,35 low-priority-base-frequency(MHz):2100000 The enable command always returns success, and the disable command always returns failed because SST-BF cannot be enabled or disabled from the OS on CascadeLake-N. Enable command also have support for --auto|-a option, which sets cpufreq scaling_min to max, so that the high priority base frequency can be the required minimum for high priority cores. Disable command with -a/--auto option reset the setting back to the min frequency. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'tools/power')
-rw-r--r--tools/power/x86/intel-speed-select/isst-config.c51
1 files changed, 47 insertions, 4 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 3c0eb4240df4..1c20048b42e7 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -1005,6 +1005,26 @@ static void set_tdp_level(int arg)
isst_ctdp_display_information_end(outf);
}
+static void clx_n_dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2,
+ void *arg3, void *arg4)
+{
+ int ret;
+
+ ret = clx_n_config(cpu);
+ if (ret) {
+ perror("isst_get_process_ctdp");
+ } else {
+ struct isst_pkg_ctdp_level_info *ctdp_level;
+ struct isst_pbf_info *pbf_info;
+
+ ctdp_level = &clx_n_pkg_dev.ctdp_level[0];
+ pbf_info = &ctdp_level->pbf_info;
+ isst_pbf_display_information(cpu, outf, tdp_level, pbf_info);
+ free_cpu_set(ctdp_level->core_cpumask);
+ free_cpu_set(pbf_info->core_cpumask);
+ }
+}
+
static void dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
void *arg4)
{
@@ -1022,6 +1042,8 @@ static void dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
static void dump_pbf_config(int arg)
{
+ void *fn;
+
if (cmd_help) {
fprintf(stderr,
"Print Intel(R) Speed Select Technology base frequency configuration for a TDP level\n");
@@ -1035,13 +1057,18 @@ static void dump_pbf_config(int arg)
exit(1);
}
+ if (!is_clx_n_platform())
+ fn = dump_pbf_config_for_cpu;
+ else
+ fn = clx_n_dump_pbf_config_for_cpu;
+
isst_ctdp_display_information_start(outf);
+
if (max_target_cpus)
- for_each_online_target_cpu_in_set(dump_pbf_config_for_cpu, NULL,
- NULL, NULL, NULL);
+ for_each_online_target_cpu_in_set(fn, NULL, NULL, NULL, NULL);
else
- for_each_online_package_in_set(dump_pbf_config_for_cpu, NULL,
- NULL, NULL, NULL);
+ for_each_online_package_in_set(fn, NULL, NULL, NULL, NULL);
+
isst_ctdp_display_information_end(outf);
}
@@ -1235,6 +1262,19 @@ static void set_pbf_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
int ret;
int status = *(int *)arg4;
+ if (is_clx_n_platform()) {
+ if (status == 0) {
+ ret = -1;
+ if (auto_mode)
+ set_scaling_min_to_cpuinfo_min(cpu);
+ } else {
+ ret = 0;
+ if (auto_mode)
+ set_scaling_min_to_cpuinfo_max(cpu);
+ }
+ goto disp_result;
+ }
+
if (auto_mode) {
if (status) {
ret = set_pbf_core_power(cpu);
@@ -1763,6 +1803,9 @@ static void get_clos_assoc(int arg)
static struct process_cmd_struct clx_n_cmds[] = {
{ "perf-profile", "info", dump_isst_config, 0 },
+ { "base-freq", "info", dump_pbf_config, 0 },
+ { "base-freq", "enable", set_pbf_enable, 1 },
+ { "base-freq", "disable", set_pbf_enable, 0 },
{ NULL, NULL, NULL, 0 }
};