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>
---
 tools/power/cpupower/utils/cpupower-set.c    | 22 +++++++++++++++++++-
 tools/power/cpupower/utils/helpers/helpers.h |  3 +++
 tools/power/cpupower/utils/helpers/misc.c    | 18 ++++++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/tools/power/cpupower/utils/cpupower-set.c b/tools/power/cpupower/utils/cpupower-set.c
index c2ba69b7ea54..0677b58374ab 100644
--- a/tools/power/cpupower/utils/cpupower-set.c
+++ b/tools/power/cpupower/utils/cpupower-set.c
@@ -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);
diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
index d35596631eef..95749b8ee475 100644
--- a/tools/power/cpupower/utils/helpers/helpers.h
+++ b/tools/power/cpupower/utils/helpers/helpers.h
@@ -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 ****************************/
 
diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c
index 075c136a100c..76e461ff4f74 100644
--- a/tools/power/cpupower/utils/helpers/misc.c
+++ b/tools/power/cpupower/utils/helpers/misc.c
@@ -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);
-- 
2.34.1

[AMD Official Use Only - General]

 Hi Wyes.

> -----Original Message-----
> From: Karny, Wyes <Wyes.Karny@amd.com>
> Sent: Tuesday, June 20, 2023 3:05 AM
> To: trenn@suse.com; shuah@kernel.org
> Cc: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org; rafael@kernel.org;
> Shenoy, Gautham Ranjal <gautham.shenoy@amd.com>; Limonciello, Mario
> <Mario.Limonciello@amd.com>; Huang, Ray <Ray.Huang@amd.com>; Yuan,
> Perry <Perry.Yuan@amd.com>; Karny, Wyes <Wyes.Karny@amd.com>; Huang,
> Ray <Ray.Huang@amd.com>; Limonciello, Mario
> <Mario.Limonciello@amd.com>
> Subject: [PATCH v3 5/5] 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>
> ---
>  tools/power/cpupower/utils/cpupower-set.c    | 22 +++++++++++++++++++-
>  tools/power/cpupower/utils/helpers/helpers.h |  3 +++
>  tools/power/cpupower/utils/helpers/misc.c    | 18 ++++++++++++++++
>  3 files changed, 42 insertions(+), 1 deletion(-)
>
> diff --git a/tools/power/cpupower/utils/cpupower-set.c
> b/tools/power/cpupower/utils/cpupower-set.c
> index c2ba69b7ea54..0677b58374ab 100644
> --- a/tools/power/cpupower/utils/cpupower-set.c
> +++ b/tools/power/cpupower/utils/cpupower-set.c
> @@ -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);
> diff --git a/tools/power/cpupower/utils/helpers/helpers.h
> b/tools/power/cpupower/utils/helpers/helpers.h
> index d35596631eef..95749b8ee475 100644
> --- a/tools/power/cpupower/utils/helpers/helpers.h
> +++ b/tools/power/cpupower/utils/helpers/helpers.h
> @@ -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 ****************************/
>
> diff --git a/tools/power/cpupower/utils/helpers/misc.c
> b/tools/power/cpupower/utils/helpers/misc.c
> index 075c136a100c..76e461ff4f74 100644
> --- a/tools/power/cpupower/utils/helpers/misc.c
> +++ b/tools/power/cpupower/utils/helpers/misc.c
> @@ -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);
> --
> 2.34.1

Thanks for the  new commands for pstate driver

Tested-by: Perry Yuan <Perry.Yuan@amd.com>

On 20 Jun 08:37, Yuan, Perry wrote:
> [AMD Official Use Only - General]
> 
>  Hi Wyes.
> 
> > -----Original Message-----
> > From: Karny, Wyes <Wyes.Karny@amd.com>
> > Sent: Tuesday, June 20, 2023 3:05 AM
> > To: trenn@suse.com; shuah@kernel.org
> > Cc: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org; rafael@kernel.org;
> > Shenoy, Gautham Ranjal <gautham.shenoy@amd.com>; Limonciello, Mario
> > <Mario.Limonciello@amd.com>; Huang, Ray <Ray.Huang@amd.com>; Yuan,
> > Perry <Perry.Yuan@amd.com>; Karny, Wyes <Wyes.Karny@amd.com>; Huang,
> > Ray <Ray.Huang@amd.com>; Limonciello, Mario
> > <Mario.Limonciello@amd.com>
> > Subject: [PATCH v3 5/5] 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>
> > ---
> >  tools/power/cpupower/utils/cpupower-set.c    | 22 +++++++++++++++++++-
> >  tools/power/cpupower/utils/helpers/helpers.h |  3 +++
> >  tools/power/cpupower/utils/helpers/misc.c    | 18 ++++++++++++++++
> >  3 files changed, 42 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/power/cpupower/utils/cpupower-set.c
> > b/tools/power/cpupower/utils/cpupower-set.c
> > index c2ba69b7ea54..0677b58374ab 100644
> > --- a/tools/power/cpupower/utils/cpupower-set.c
> > +++ b/tools/power/cpupower/utils/cpupower-set.c
> > @@ -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);
> > diff --git a/tools/power/cpupower/utils/helpers/helpers.h
> > b/tools/power/cpupower/utils/helpers/helpers.h
> > index d35596631eef..95749b8ee475 100644
> > --- a/tools/power/cpupower/utils/helpers/helpers.h
> > +++ b/tools/power/cpupower/utils/helpers/helpers.h
> > @@ -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 ****************************/
> >
> > diff --git a/tools/power/cpupower/utils/helpers/misc.c
> > b/tools/power/cpupower/utils/helpers/misc.c
> > index 075c136a100c..76e461ff4f74 100644
> > --- a/tools/power/cpupower/utils/helpers/misc.c
> > +++ b/tools/power/cpupower/utils/helpers/misc.c
> > @@ -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);
> > --
> > 2.34.1
> 
> Thanks for the  new commands for pstate driver
> 
> Tested-by: Perry Yuan <Perry.Yuan@amd.com>

Thanks Perry for the tested-by.

Regards,
Wyes