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cpupower: Add turbo-boost support in cpupower

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If boost sysfs (/sys/devices/system/cpu/cpufreq/boost) file is present
turbo-boost is feature is supported in the hardware. By default this
feature should be enabled. But to disable/enable it write to the sysfs
file. Use the same to control this feature via cpupower.

To enable:
cpupower set --turbo-boost 1

To disable:
cpupower set --turbo-boost 0

Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Wyes Karny 2023-06-19 19:05:03 +00:00 committed by Shuah Khan
parent df8776b036
commit eb426fc6bd
3 changed files with 42 additions and 1 deletions
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22
tools/power/cpupower/utils/cpupower-set.c
View file

@ -20,6 +20,7 @@ static struct option set_opts[] = {
{"perf-bias", required_argument, NULL, 'b'},
{"epp", required_argument, NULL, 'e'},
{"amd-pstate-mode", required_argument, NULL, 'm'},
{"turbo-boost", required_argument, NULL, 't'},
{ },
};
@ -41,10 +42,11 @@ int cmd_set(int argc, char **argv)
int perf_bias:1;
int epp:1;
int mode:1;
int turbo_boost:1;
};
int params;
} params;
int perf_bias = 0;
int perf_bias = 0, turbo_boost = 1;
int ret = 0;
char epp[30], mode[20];
@ -94,6 +96,18 @@ int cmd_set(int argc, char **argv)
}
params.mode = 1;
break;
case 't':
if (params.turbo_boost)
print_wrong_arg_exit();
turbo_boost = atoi(optarg);
if (turbo_boost < 0 || turbo_boost > 1) {
printf("--turbo-boost param out of range [0-1]\n");
print_wrong_arg_exit();
}
params.turbo_boost = 1;
break;
default:
print_wrong_arg_exit();
}
@ -108,6 +122,12 @@ int cmd_set(int argc, char **argv)
fprintf(stderr, "Error setting mode\n");
}
if (params.turbo_boost) {
ret = cpupower_set_turbo_boost(turbo_boost);
if (ret)
fprintf(stderr, "Error setting turbo-boost\n");
}
/* Default is: set all CPUs */
if (bitmask_isallclear(cpus_chosen))
bitmask_setall(cpus_chosen);

3
tools/power/cpupower/utils/helpers/helpers.h
View file

@ -118,6 +118,7 @@ extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
extern int cpupower_set_epp(unsigned int cpu, char *epp);
extern int cpupower_set_amd_pstate_mode(char *mode);
extern int cpupower_set_turbo_boost(int turbo_boost);
/* Read/Write msr ****************************/
@ -180,6 +181,8 @@ static inline int cpupower_set_epp(unsigned int cpu, char *epp)
{ return -1; };
static inline int cpupower_set_amd_pstate_mode(char *mode)
{ return -1; };
static inline int cpupower_set_turbo_boost(int turbo_boost)
{ return -1; };
/* Read/Write msr ****************************/

18
tools/power/cpupower/utils/helpers/misc.c
View file

@ -124,6 +124,24 @@ int cpupower_set_amd_pstate_mode(char *mode)
return 0;
}
int cpupower_set_turbo_boost(int turbo_boost)
{
char path[SYSFS_PATH_MAX];
char linebuf[2] = {};
snprintf(path, sizeof(path), PATH_TO_CPU "cpufreq/boost");
if (!is_valid_path(path))
return -1;
snprintf(linebuf, sizeof(linebuf), "%d", turbo_boost);
if (cpupower_write_sysfs(path, linebuf, 2) <= 0)
return -1;
return 0;
}
bool cpupower_amd_pstate_enabled(void)
{
char *driver = cpufreq_get_driver(0);