[PATCH v2 0/3] tools/power/x86/intel-speed-select: Auto mode

[PATCH v2 0/3] tools/power/x86/intel-speed-select: Auto mode

[Srinivas Pandruvada]

v2
The sequence should be opposite than what was submitted in v1.
First enable core-power than enable turbo-freq and base-freq
for the auto mode. Firmware may give error if the core-power
feature is not enabled first.

Also need to set the core_power property of thread siblings.
Othewise it will be reset if user forgot to add those siblings
as part of command line CPUs.

Srinivas Pandruvada (3):
  tools/power/x86/intel-speed-select: Base-freq feature auto mode
  tools/power/x86/intel-speed-select: Turbo-freq feature auto mode
  tools/power/x86/intel-speed-select: Refuse to disable core-power when
    getting used

 .../x86/intel-speed-select/isst-config.c      | 384 ++++++++++++++++--
 .../power/x86/intel-speed-select/isst-core.c  |  21 +
 2 files changed, 368 insertions(+), 37 deletions(-)

-- 
2.17.2

[PATCH v2 1/3] tools/power/x86/intel-speed-select: Base-freq feature auto mode

[Srinivas Pandruvada]

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

[PATCH v2 2/3] tools/power/x86/intel-speed-select: Turbo-freq feature auto mode

[Srinivas Pandruvada]

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@linux.intel.com>
---
 .../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

[PATCH v2 3/3] tools/power/x86/intel-speed-select: Refuse to disable core-power when getting used

[Srinivas Pandruvada]

The turbo-freq feature is dependent on the core-power feature. If the
core-power feature is disabled while the turbo-freq feature is enabled,
this will break the turbo-freq feature. This is a firmware limitation,
where they can't return error under this scenario.

So when trying to disable core-power, make sure that the turbo-freq
feature is not enabled. If it enabled, return error if user is trying to
disable the core-power feature.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../power/x86/intel-speed-select/isst-core.c  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tools/power/x86/intel-speed-select/isst-core.c b/tools/power/x86/intel-speed-select/isst-core.c
index 6dee5332c9d3..67d32f2b9bea 100644
--- a/tools/power/x86/intel-speed-select/isst-core.c
+++ b/tools/power/x86/intel-speed-select/isst-core.c
@@ -649,6 +649,27 @@ int isst_pm_qos_config(int cpu, int enable_clos, int priority_type)
 	unsigned int req, resp;
 	int ret;
 
+	if (!enable_clos) {
+		struct isst_pkg_ctdp pkg_dev;
+		struct isst_pkg_ctdp_level_info ctdp_level;
+
+		ret = isst_get_ctdp_levels(cpu, &pkg_dev);
+		if (ret) {
+			debug_printf("isst_get_ctdp_levels\n");
+			return ret;
+		}
+
+		ret = isst_get_ctdp_control(cpu, pkg_dev.current_level,
+					    &ctdp_level);
+		if (ret)
+			return ret;
+
+		if (ctdp_level.fact_enabled) {
+			debug_printf("Turbo-freq feature must be disabled first\n");
+			return -EINVAL;
+		}
+	}
+
 	ret = isst_send_mbox_command(cpu, CONFIG_CLOS, CLOS_PM_QOS_CONFIG, 0, 0,
 				     &resp);
 	if (ret)
-- 
2.17.2