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synced 2024-10-28 15:20:41 +00:00
cpupower: Add turbo-boost support in cpupower
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>
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parent
df8776b036
commit
eb426fc6bd
3 changed files with 42 additions and 1 deletions
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@ -20,6 +20,7 @@ static struct option set_opts[] = {
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{"perf-bias", required_argument, NULL, 'b'},
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{"epp", required_argument, NULL, 'e'},
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{"amd-pstate-mode", required_argument, NULL, 'm'},
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{"turbo-boost", required_argument, NULL, 't'},
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{ },
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};
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@ -41,10 +42,11 @@ int cmd_set(int argc, char **argv)
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int perf_bias:1;
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int epp:1;
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int mode:1;
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int turbo_boost:1;
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};
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int params;
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} params;
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int perf_bias = 0;
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int perf_bias = 0, turbo_boost = 1;
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int ret = 0;
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char epp[30], mode[20];
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@ -94,6 +96,18 @@ int cmd_set(int argc, char **argv)
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}
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params.mode = 1;
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break;
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case 't':
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if (params.turbo_boost)
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print_wrong_arg_exit();
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turbo_boost = atoi(optarg);
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if (turbo_boost < 0 || turbo_boost > 1) {
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printf("--turbo-boost param out of range [0-1]\n");
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print_wrong_arg_exit();
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}
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params.turbo_boost = 1;
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break;
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default:
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print_wrong_arg_exit();
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}
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@ -108,6 +122,12 @@ int cmd_set(int argc, char **argv)
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fprintf(stderr, "Error setting mode\n");
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}
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if (params.turbo_boost) {
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ret = cpupower_set_turbo_boost(turbo_boost);
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if (ret)
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fprintf(stderr, "Error setting turbo-boost\n");
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}
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/* Default is: set all CPUs */
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if (bitmask_isallclear(cpus_chosen))
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bitmask_setall(cpus_chosen);
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@ -118,6 +118,7 @@ extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
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extern int cpupower_set_epp(unsigned int cpu, char *epp);
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extern int cpupower_set_amd_pstate_mode(char *mode);
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extern int cpupower_set_turbo_boost(int turbo_boost);
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/* Read/Write msr ****************************/
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@ -180,6 +181,8 @@ static inline int cpupower_set_epp(unsigned int cpu, char *epp)
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{ return -1; };
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static inline int cpupower_set_amd_pstate_mode(char *mode)
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{ return -1; };
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static inline int cpupower_set_turbo_boost(int turbo_boost)
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{ return -1; };
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/* Read/Write msr ****************************/
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@ -124,6 +124,24 @@ int cpupower_set_amd_pstate_mode(char *mode)
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return 0;
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}
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int cpupower_set_turbo_boost(int turbo_boost)
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{
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char path[SYSFS_PATH_MAX];
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char linebuf[2] = {};
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snprintf(path, sizeof(path), PATH_TO_CPU "cpufreq/boost");
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if (!is_valid_path(path))
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return -1;
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snprintf(linebuf, sizeof(linebuf), "%d", turbo_boost);
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if (cpupower_write_sysfs(path, linebuf, 2) <= 0)
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return -1;
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return 0;
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}
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bool cpupower_amd_pstate_enabled(void)
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{
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char *driver = cpufreq_get_driver(0);
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