[PATCH v2 2/3] tools/power/x86/intel-speed-select: Turbo-freq feature auto mode
From: Srinivas Pandruvada
Date: Mon Oct 07 2019 - 13:30:17 EST
Introduce --auto|-a option to turbo-freq enable feature, so that it
does in one step for users who are OK by setting all passed target cores
as high priority and set in CLOS 0 and remaining in CLOS 3. In this way,
users don't have to take multiple steps to enable turbo-freq feature. For
users who want more fine grain control, they can always use core-power
feature to set custom CLOS configuration and assignment.
While here also print the error to output when clos configuration fails.
For example
intel-speed-select -c 0-4 turbo-freq enable --auto
The above command will enable turbo-freq and core-power feature. Also
mark CPU 0 to CPU 4 as high priority.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
---
.../x86/intel-speed-select/isst-config.c | 152 ++++++++++++++----
1 file changed, 124 insertions(+), 28 deletions(-)
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 82502a38446e..e1ca7c5b8037 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -1173,40 +1173,58 @@ static void set_fact_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
int ret;
int status = *(int *)arg4;
+ if (auto_mode) {
+ if (status) {
+ ret = isst_pm_qos_config(cpu, 1, 1);
+ if (ret)
+ goto disp_results;
+ } else {
+ isst_pm_qos_config(cpu, 0, 0);
+ }
+ }
+
ret = isst_set_pbf_fact_status(cpu, 0, status);
- if (ret)
+ if (ret) {
perror("isst_set_fact");
- else {
- if (status) {
- struct isst_pkg_ctdp pkg_dev;
+ if (auto_mode)
+ isst_pm_qos_config(cpu, 0, 0);
- ret = isst_get_ctdp_levels(cpu, &pkg_dev);
- if (ret) {
- isst_display_result(cpu, outf, "turbo-freq",
- "enable", ret);
- return;
- }
+ goto disp_results;
+ }
+
+ /* Set TRL */
+ if (status) {
+ struct isst_pkg_ctdp pkg_dev;
+
+ ret = isst_get_ctdp_levels(cpu, &pkg_dev);
+ if (!ret)
ret = isst_set_trl(cpu, fact_trl);
- isst_display_result(cpu, outf, "turbo-freq", "enable",
- ret);
- } else {
- /* Since we modified TRL during Fact enable, restore it */
- isst_set_trl_from_current_tdp(cpu, fact_trl);
- isst_display_result(cpu, outf, "turbo-freq", "disable",
- ret);
- }
+ if (ret && auto_mode)
+ isst_pm_qos_config(cpu, 0, 0);
+ }
+
+disp_results:
+ if (status) {
+ isst_display_result(cpu, outf, "turbo-freq", "enable", ret);
+ } else {
+ /* Since we modified TRL during Fact enable, restore it */
+ isst_set_trl_from_current_tdp(cpu, fact_trl);
+ isst_display_result(cpu, outf, "turbo-freq", "disable", ret);
}
}
static void set_fact_enable(void)
{
- int status = 1;
+ int status = 1, i, ret;
if (cmd_help) {
fprintf(stderr,
"Enable Intel Speed Select Technology Turbo frequency feature\n");
fprintf(stderr,
"Optional: -t|--trl : Specify turbo ratio limit\n");
+ fprintf(stderr,
+ "\tOptional Arguments: -a|--auto : Designate specified target CPUs with");
+ fprintf(stderr, "-C|--cpu option as as high priority using core-power feature\n");
exit(0);
}
@@ -1218,6 +1236,83 @@ static void set_fact_enable(void)
for_each_online_package_in_set(set_fact_for_cpu, NULL, NULL,
NULL, &status);
isst_ctdp_display_information_end(outf);
+
+ if (auto_mode) {
+ /*
+ * When we adjust CLOS param, we have to set for siblings also.
+ * So for the each user specified CPU, also add the sibling
+ * in the present_cpu_mask.
+ */
+ for (i = 0; i < get_topo_max_cpus(); ++i) {
+ char buffer[128], sibling_list[128], *cpu_str;
+ int fd, len;
+
+ if (!CPU_ISSET_S(i, target_cpumask_size, target_cpumask))
+ continue;
+
+ snprintf(buffer, sizeof(buffer),
+ "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", i);
+
+ fd = open(buffer, O_RDONLY);
+ if (fd < 0)
+ continue;
+
+ len = read(fd, sibling_list, sizeof(sibling_list));
+ close(fd);
+
+ if (len < 0)
+ continue;
+
+ cpu_str = strtok(sibling_list, ",");
+ while (cpu_str != NULL) {
+ int cpu;
+
+ sscanf(cpu_str, "%d", &cpu);
+ CPU_SET_S(cpu, target_cpumask_size, target_cpumask);
+ cpu_str = strtok(NULL, ",");
+ }
+ }
+
+ for (i = 0; i < get_topo_max_cpus(); ++i) {
+ int clos;
+
+ if (!CPU_ISSET_S(i, present_cpumask_size, present_cpumask))
+ continue;
+
+ ret = set_clos_param(i, 0, 0, 0, 0, 0xff);
+ if (ret)
+ goto error_disp;
+
+ ret = set_clos_param(i, 1, 15, 0, 0, 0xff);
+ if (ret)
+ goto error_disp;
+
+ ret = set_clos_param(i, 2, 15, 0, 0, 0xff);
+ if (ret)
+ goto error_disp;
+
+ ret = set_clos_param(i, 3, 15, 0, 0, 0xff);
+ if (ret)
+ goto error_disp;
+
+ if (CPU_ISSET_S(i, target_cpumask_size, target_cpumask))
+ clos = 0;
+ else
+ clos = 3;
+
+ debug_printf("Associate cpu: %d clos: %d\n", i, clos);
+ ret = isst_clos_associate(i, clos);
+ if (ret)
+ goto error_disp;
+ }
+ isst_display_result(i, outf, "turbo-freq --auto", "enable", 0);
+ }
+
+ return;
+
+error_disp:
+ isst_display_result(i, outf, "turbo-freq --auto", "enable", ret);
+
}
static void set_fact_disable(void)
@@ -1229,6 +1324,8 @@ static void set_fact_disable(void)
"Disable Intel Speed Select Technology turbo frequency feature\n");
fprintf(stderr,
"Optional: -t|--trl : Specify turbo ratio limit\n");
+ fprintf(stderr,
+ "\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
exit(0);
}
@@ -1249,16 +1346,15 @@ static void enable_clos_qos_config(int cpu, void *arg1, void *arg2, void *arg3,
int status = *(int *)arg4;
ret = isst_pm_qos_config(cpu, status, clos_priority_type);
- if (ret) {
+ if (ret)
perror("isst_pm_qos_config");
- } else {
- if (status)
- isst_display_result(cpu, outf, "core-power", "enable",
- ret);
- else
- isst_display_result(cpu, outf, "core-power", "disable",
- ret);
- }
+
+ if (status)
+ isst_display_result(cpu, outf, "core-power", "enable",
+ ret);
+ else
+ isst_display_result(cpu, outf, "core-power", "disable",
+ ret);
}
static void set_clos_enable(void)
--
2.17.2