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Subject[RESEND][PATCH 02/10] tools/power/x86/intel-speed-select: Base-freq feature auto mode
Date
Introduce --auto|-a option to base-freq enable feature, so that it
does in one step for users who are OK by setting all cores with higher
base frequency to be set in CLOS 0 and remaining in CLOS 3. This option
also sets corresponding clos.min to CLOS 0 and CLOS3. In this way, users
don't have to take multiple steps to enable base-freq feature. For users
who want more fine grain control, they can always use core-power feature
to set custom CLOS configuration and assignment.

Also adjust cpufreq/scaling_min_freq for higher and lower priority cores.

For example user can use:
intel-speed-select base-freq enable --auto

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
.../x86/intel-speed-select/isst-config.c | 232 +++++++++++++++++-
1 file changed, 223 insertions(+), 9 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 21fcfe621d3a..82502a38446e 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -39,6 +39,7 @@ static unsigned long long fact_trl;
static int out_format_json;
static int cmd_help;
static int force_online_offline;
+static int auto_mode;

/* clos related */
static int current_clos = -1;
@@ -855,23 +856,227 @@ static void dump_pbf_config(void)
isst_ctdp_display_information_end(outf);
}

+static int set_clos_param(int cpu, int clos, int epp, int wt, int min, int max)
+{
+ struct isst_clos_config clos_config;
+ int ret;
+
+ ret = isst_pm_get_clos(cpu, clos, &clos_config);
+ if (ret) {
+ perror("isst_pm_get_clos");
+ return ret;
+ }
+ clos_config.clos_min = min;
+ clos_config.clos_max = max;
+ clos_config.epp = epp;
+ clos_config.clos_prop_prio = wt;
+ ret = isst_set_clos(cpu, clos, &clos_config);
+ if (ret) {
+ perror("isst_pm_set_clos");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int set_cpufreq_cpuinfo_scaling_min(int cpu, int max)
+{
+ char buffer[128], min_freq[16];
+ int fd, ret, len;
+
+ if (!CPU_ISSET_S(cpu, present_cpumask_size, present_cpumask))
+ return -1;
+
+ if (max)
+ snprintf(buffer, sizeof(buffer),
+ "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpu);
+ else
+ snprintf(buffer, sizeof(buffer),
+ "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_min_freq", cpu);
+
+ fd = open(buffer, O_RDONLY);
+ if (fd < 0)
+ return fd;
+
+ len = read(fd, min_freq, sizeof(min_freq));
+ close(fd);
+
+ if (len < 0)
+ return len;
+
+ snprintf(buffer, sizeof(buffer),
+ "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_min_freq", cpu);
+
+ fd = open(buffer, O_WRONLY);
+ if (fd < 0)
+ return fd;
+
+ len = strlen(min_freq);
+ ret = write(fd, min_freq, len);
+ if (ret == -1) {
+ close(fd);
+ return ret;
+ }
+ close(fd);
+
+ return 0;
+}
+
+static void set_scaling_min_to_cpuinfo_max(int cpu)
+{
+ int i, pkg_id, die_id;
+
+ pkg_id = get_physical_package_id(cpu);
+ die_id = get_physical_die_id(cpu);
+ for (i = 0; i < get_topo_max_cpus(); ++i) {
+ if (pkg_id != get_physical_package_id(i) ||
+ die_id != get_physical_die_id(i))
+ continue;
+
+ set_cpufreq_cpuinfo_scaling_min(i, 1);
+ }
+}
+
+static void set_scaling_min_to_cpuinfo_min(int cpu)
+{
+ int i, pkg_id, die_id;
+
+ pkg_id = get_physical_package_id(cpu);
+ die_id = get_physical_die_id(cpu);
+ for (i = 0; i < get_topo_max_cpus(); ++i) {
+ if (pkg_id != get_physical_package_id(i) ||
+ die_id != get_physical_die_id(i))
+ continue;
+
+ set_cpufreq_cpuinfo_scaling_min(i, 0);
+ }
+}
+
+static int set_core_priority_and_min(int cpu, int mask_size,
+ cpu_set_t *cpu_mask, int min_high,
+ int min_low)
+{
+ int pkg_id, die_id, ret, i;
+
+ if (!CPU_COUNT_S(mask_size, cpu_mask))
+ return -1;
+
+ ret = set_clos_param(cpu, 0, 0, 0, min_high, 0xff);
+ if (ret)
+ return ret;
+
+ ret = set_clos_param(cpu, 1, 15, 0, min_low, 0xff);
+ if (ret)
+ return ret;
+
+ ret = set_clos_param(cpu, 2, 15, 0, min_low, 0xff);
+ if (ret)
+ return ret;
+
+ ret = set_clos_param(cpu, 3, 15, 0, min_low, 0xff);
+ if (ret)
+ return ret;
+
+ pkg_id = get_physical_package_id(cpu);
+ die_id = get_physical_die_id(cpu);
+ for (i = 0; i < get_topo_max_cpus(); ++i) {
+ int clos;
+
+ if (pkg_id != get_physical_package_id(i) ||
+ die_id != get_physical_die_id(i))
+ continue;
+
+ if (CPU_ISSET_S(i, mask_size, cpu_mask))
+ clos = 0;
+ else
+ clos = 3;
+
+ debug_printf("Associate cpu: %d clos: %d\n", i, clos);
+ ret = isst_clos_associate(i, clos);
+ if (ret) {
+ perror("isst_clos_associate");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int set_pbf_core_power(int cpu)
+{
+ struct isst_pbf_info pbf_info;
+ struct isst_pkg_ctdp pkg_dev;
+ int ret;
+
+ ret = isst_get_ctdp_levels(cpu, &pkg_dev);
+ if (ret) {
+ perror("isst_get_ctdp_levels");
+ return ret;
+ }
+ debug_printf("Current_level: %d\n", pkg_dev.current_level);
+
+ ret = isst_get_pbf_info(cpu, pkg_dev.current_level, &pbf_info);
+ if (ret) {
+ perror("isst_get_pbf_info");
+ return ret;
+ }
+ debug_printf("p1_high: %d p1_low: %d\n", pbf_info.p1_high,
+ pbf_info.p1_low);
+
+ ret = set_core_priority_and_min(cpu, pbf_info.core_cpumask_size,
+ pbf_info.core_cpumask,
+ pbf_info.p1_high, pbf_info.p1_low);
+ if (ret) {
+ perror("set_core_priority_and_min");
+ return ret;
+ }
+
+ ret = isst_pm_qos_config(cpu, 1, 1);
+ if (ret) {
+ perror("isst_pm_qos_config");
+ return ret;
+ }
+
+ return 0;
+}
+
static void set_pbf_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
void *arg4)
{
int ret;
int status = *(int *)arg4;

+ if (auto_mode) {
+ if (status) {
+ ret = set_pbf_core_power(cpu);
+ if (ret)
+ goto disp_result;
+ } else {
+ isst_pm_qos_config(cpu, 0, 0);
+ }
+ }
+
ret = isst_set_pbf_fact_status(cpu, 1, status);
if (ret) {
perror("isst_set_pbf");
+ if (auto_mode)
+ isst_pm_qos_config(cpu, 0, 0);
} else {
- if (status)
- isst_display_result(cpu, outf, "base-freq", "enable",
- ret);
- else
- isst_display_result(cpu, outf, "base-freq", "disable",
- ret);
+ if (auto_mode) {
+ if (status)
+ set_scaling_min_to_cpuinfo_max(cpu);
+ else
+ set_scaling_min_to_cpuinfo_min(cpu);
+ }
}
+
+disp_result:
+ if (status)
+ isst_display_result(cpu, outf, "base-freq", "enable",
+ ret);
+ else
+ isst_display_result(cpu, outf, "base-freq", "disable",
+ ret);
}

static void set_pbf_enable(void)
@@ -880,7 +1085,10 @@ static void set_pbf_enable(void)

if (cmd_help) {
fprintf(stderr,
- "Enable Intel Speed Select Technology base frequency feature [No command arguments are required]\n");
+ "Enable Intel Speed Select Technology base frequency feature\n");
+ fprintf(stderr,
+ "\tOptional Arguments: -a|--auto : Use priority of cores to set core-power associations\n");
+
exit(0);
}

@@ -900,7 +1108,9 @@ static void set_pbf_disable(void)

if (cmd_help) {
fprintf(stderr,
- "Disable Intel Speed Select Technology base frequency feature [No command arguments are required]\n");
+ "Disable Intel Speed Select Technology base frequency feature\n");
+ fprintf(stderr,
+ "\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
exit(0);
}

@@ -1420,15 +1630,19 @@ static void parse_cmd_args(int argc, int start, char **argv)
{ "max", required_argument, 0, 'm' },
{ "priority", required_argument, 0, 'p' },
{ "weight", required_argument, 0, 'w' },
+ { "auto", no_argument, 0, 'a' },
{ 0, 0, 0, 0 }
};

option_index = start;

optind = start + 1;
- while ((opt = getopt_long(argc, argv, "b:l:t:c:d:e:n:m:p:w:ho",
+ while ((opt = getopt_long(argc, argv, "b:l:t:c:d:e:n:m:p:w:hoa",
long_options, &option_index)) != -1) {
switch (opt) {
+ case 'a':
+ auto_mode = 1;
+ break;
case 'b':
fact_bucket = atoi(optarg);
break;
--
2.17.2
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