diff mbox series

[v7,03/13] cpufreq: intel_pstate: use common macro definition for Energy Preference Performance(EPP)

Message ID 20221208111852.386731-4-perry.yuan@amd.com
State New
Headers
Series Implement AMD Pstate EPP Driver |

Commit Message

Yuan, Perry Dec. 8, 2022, 11:18 a.m. UTC 
  make the energy preference performance strings and profiles using one
common header for intel_pstate driver, then the amd_pstate epp driver can
use the common header as well. This will simpify the intel_pstate and
amd_pstate driver.

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
---
 arch/x86/include/asm/msr-index.h |  4 ---
 drivers/cpufreq/intel_pstate.c   | 37 +---------------------
 include/linux/cpufreq_common.h   | 53 ++++++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 40 deletions(-)
 create mode 100644 include/linux/cpufreq_common.h

Comments

Huang Rui Dec. 9, 2022, 8:01 a.m. UTC | #1 
On Thu, Dec 08, 2022 at 07:18:42PM +0800, Yuan, Perry wrote:
> make the energy preference performance strings and profiles using one
> common header for intel_pstate driver, then the amd_pstate epp driver can
> use the common header as well. This will simpify the intel_pstate and
> amd_pstate driver.
> 
> Signed-off-by: Perry Yuan <perry.yuan@amd.com>

Please address the comment in V6:

https://lore.kernel.org/linux-pm/Y43aq2gMKnFRIhxh@amd.com/T/#md503ee2fa32858e6cc9ab4da9ec1b89a6bae6058

Thanks,
Ray

> ---
>  arch/x86/include/asm/msr-index.h |  4 ---
>  drivers/cpufreq/intel_pstate.c   | 37 +---------------------
>  include/linux/cpufreq_common.h   | 53 ++++++++++++++++++++++++++++++++
>  3 files changed, 54 insertions(+), 40 deletions(-)
>  create mode 100644 include/linux/cpufreq_common.h
> 
> diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
> index 4a2af82553e4..3983378cff5b 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -472,10 +472,6 @@
>  #define HWP_MAX_PERF(x) 		((x & 0xff) << 8)
>  #define HWP_DESIRED_PERF(x)		((x & 0xff) << 16)
>  #define HWP_ENERGY_PERF_PREFERENCE(x)	(((unsigned long long) x & 0xff) << 24)
> -#define HWP_EPP_PERFORMANCE		0x00
> -#define HWP_EPP_BALANCE_PERFORMANCE	0x80
> -#define HWP_EPP_BALANCE_POWERSAVE	0xC0
> -#define HWP_EPP_POWERSAVE		0xFF
>  #define HWP_ACTIVITY_WINDOW(x)		((unsigned long long)(x & 0xff3) << 32)
>  #define HWP_PACKAGE_CONTROL(x)		((unsigned long long)(x & 0x1) << 42)
>  
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index ad9be31753b6..1b842ed874ab 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -26,6 +26,7 @@
>  #include <linux/vmalloc.h>
>  #include <linux/pm_qos.h>
>  #include <trace/events/power.h>
> +#include <linux/cpufreq_common.h>
>  
>  #include <asm/cpu.h>
>  #include <asm/div64.h>
> @@ -628,42 +629,6 @@ static int intel_pstate_set_epb(int cpu, s16 pref)
>  	return 0;
>  }
>  
> -/*
> - * EPP/EPB display strings corresponding to EPP index in the
> - * energy_perf_strings[]
> - *	index		String
> - *-------------------------------------
> - *	0		default
> - *	1		performance
> - *	2		balance_performance
> - *	3		balance_power
> - *	4		power
> - */
> -
> -enum energy_perf_value_index {
> -	EPP_INDEX_DEFAULT = 0,
> -	EPP_INDEX_PERFORMANCE,
> -	EPP_INDEX_BALANCE_PERFORMANCE,
> -	EPP_INDEX_BALANCE_POWERSAVE,
> -	EPP_INDEX_POWERSAVE,
> -};
> -
> -static const char * const energy_perf_strings[] = {
> -	[EPP_INDEX_DEFAULT] = "default",
> -	[EPP_INDEX_PERFORMANCE] = "performance",
> -	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
> -	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
> -	[EPP_INDEX_POWERSAVE] = "power",
> -	NULL
> -};
> -static unsigned int epp_values[] = {
> -	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
> -	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
> -	[EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
> -	[EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
> -	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
> -};
> -
>  static int intel_pstate_get_energy_pref_index(struct cpudata *cpu_data, int *raw_epp)
>  {
>  	s16 epp;
> diff --git a/include/linux/cpufreq_common.h b/include/linux/cpufreq_common.h
> new file mode 100644
> index 000000000000..c1224e3bc68b
> --- /dev/null
> +++ b/include/linux/cpufreq_common.h
> @@ -0,0 +1,53 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * linux/include/linux/cpufreq_common.h
> + *
> + * Copyright (C) 2022 Advanced Micro Devices, Inc.
> + *
> + * Author: Perry Yuan <Perry.Yuan@amd.com>
> + */
> +
> +#ifndef _LINUX_CPUFREQ_COMMON_H
> +#define _LINUX_CPUFREQ_COMMON_H
> +/*
> + * EPP/EPB display strings corresponding to EPP index in the
> + * energy_perf_strings[]
> + *	index		String
> + *-------------------------------------
> + *	0		default
> + *	1		performance
> + *	2		balance_performance
> + *	3		balance_power
> + *	4		power
> + */
> +
> +#define HWP_EPP_PERFORMANCE		0x00
> +#define HWP_EPP_BALANCE_PERFORMANCE	0x80
> +#define HWP_EPP_BALANCE_POWERSAVE	0xC0
> +#define HWP_EPP_POWERSAVE		0xFF
> +
> +enum energy_perf_value_index {
> +	EPP_INDEX_DEFAULT = 0,
> +	EPP_INDEX_PERFORMANCE,
> +	EPP_INDEX_BALANCE_PERFORMANCE,
> +	EPP_INDEX_BALANCE_POWERSAVE,
> +	EPP_INDEX_POWERSAVE,
> +};
> +
> +static const char * const energy_perf_strings[] = {
> +	[EPP_INDEX_DEFAULT] = "default",
> +	[EPP_INDEX_PERFORMANCE] = "performance",
> +	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
> +	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
> +	[EPP_INDEX_POWERSAVE] = "power",
> +	NULL
> +};
> +
> +static unsigned int epp_values[] = {
> +	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
> +	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
> +	[EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
> +	[EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
> +	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
> +};
> +#endif /* _LINUX_CPUFREQ_COMMON_H */
> -- 
> 2.34.1
>
Yuan, Perry Dec. 9, 2022, 8:54 a.m. UTC | #2 
[AMD Official Use Only - General]



> -----Original Message-----
> From: Huang, Ray <Ray.Huang@amd.com>
> Sent: Friday, December 9, 2022 4:01 PM
> To: Yuan, Perry <Perry.Yuan@amd.com>
> Cc: rafael.j.wysocki@intel.com; Limonciello, Mario
> <Mario.Limonciello@amd.com>; viresh.kumar@linaro.org; Sharma, Deepak
> <Deepak.Sharma@amd.com>; Fontenot, Nathan
> <Nathan.Fontenot@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Huang, Shimmer
> <Shimmer.Huang@amd.com>; Du, Xiaojian <Xiaojian.Du@amd.com>; Meng,
> Li (Jassmine) <Li.Meng@amd.com>; Karny, Wyes <Wyes.Karny@amd.com>;
> linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v7 03/13] cpufreq: intel_pstate: use common macro
> definition for Energy Preference Performance(EPP)
> 
> On Thu, Dec 08, 2022 at 07:18:42PM +0800, Yuan, Perry wrote:
> > make the energy preference performance strings and profiles using one
> > common header for intel_pstate driver, then the amd_pstate epp driver
> > can use the common header as well. This will simpify the intel_pstate
> > and amd_pstate driver.
> >
> > Signed-off-by: Perry Yuan <perry.yuan@amd.com>
> 
> Please address the comment in V6:
> 
> https://lore.kernel.org/linux-
> pm/Y43aq2gMKnFRIhxh@amd.com/T/#md503ee2fa32858e6cc9ab4da9ec1b8
> 9a6bae6058
> 
> Thanks,
> Ray

Talked with Mario as well, will fix the build failure and get this changed in V8. 
Thanks for reviewing.


> 
> > ---
> >  arch/x86/include/asm/msr-index.h |  4 ---
> >  drivers/cpufreq/intel_pstate.c   | 37 +---------------------
> >  include/linux/cpufreq_common.h   | 53
> ++++++++++++++++++++++++++++++++
> >  3 files changed, 54 insertions(+), 40 deletions(-)  create mode
> > 100644 include/linux/cpufreq_common.h
> >
> > diff --git a/arch/x86/include/asm/msr-index.h
> > b/arch/x86/include/asm/msr-index.h
> > index 4a2af82553e4..3983378cff5b 100644
> > --- a/arch/x86/include/asm/msr-index.h
> > +++ b/arch/x86/include/asm/msr-index.h
> > @@ -472,10 +472,6 @@
> >  #define HWP_MAX_PERF(x) 		((x & 0xff) << 8)
> >  #define HWP_DESIRED_PERF(x)		((x & 0xff) << 16)
> >  #define HWP_ENERGY_PERF_PREFERENCE(x)	(((unsigned long long)
> x & 0xff) << 24)
> > -#define HWP_EPP_PERFORMANCE		0x00
> > -#define HWP_EPP_BALANCE_PERFORMANCE	0x80
> > -#define HWP_EPP_BALANCE_POWERSAVE	0xC0
> > -#define HWP_EPP_POWERSAVE		0xFF
> >  #define HWP_ACTIVITY_WINDOW(x)		((unsigned long
> long)(x & 0xff3) << 32)
> >  #define HWP_PACKAGE_CONTROL(x)		((unsigned long
> long)(x & 0x1) << 42)
> >
> > diff --git a/drivers/cpufreq/intel_pstate.c
> > b/drivers/cpufreq/intel_pstate.c index ad9be31753b6..1b842ed874ab
> > 100644
> > --- a/drivers/cpufreq/intel_pstate.c
> > +++ b/drivers/cpufreq/intel_pstate.c
> > @@ -26,6 +26,7 @@
> >  #include <linux/vmalloc.h>
> >  #include <linux/pm_qos.h>
> >  #include <trace/events/power.h>
> > +#include <linux/cpufreq_common.h>
> >
> >  #include <asm/cpu.h>
> >  #include <asm/div64.h>
> > @@ -628,42 +629,6 @@ static int intel_pstate_set_epb(int cpu, s16 pref)
> >  	return 0;
> >  }
> >
> > -/*
> > - * EPP/EPB display strings corresponding to EPP index in the
> > - * energy_perf_strings[]
> > - *	index		String
> > - *-------------------------------------
> > - *	0		default
> > - *	1		performance
> > - *	2		balance_performance
> > - *	3		balance_power
> > - *	4		power
> > - */
> > -
> > -enum energy_perf_value_index {
> > -	EPP_INDEX_DEFAULT = 0,
> > -	EPP_INDEX_PERFORMANCE,
> > -	EPP_INDEX_BALANCE_PERFORMANCE,
> > -	EPP_INDEX_BALANCE_POWERSAVE,
> > -	EPP_INDEX_POWERSAVE,
> > -};
> > -
> > -static const char * const energy_perf_strings[] = {
> > -	[EPP_INDEX_DEFAULT] = "default",
> > -	[EPP_INDEX_PERFORMANCE] = "performance",
> > -	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
> > -	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
> > -	[EPP_INDEX_POWERSAVE] = "power",
> > -	NULL
> > -};
> > -static unsigned int epp_values[] = {
> > -	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
> > -	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
> > -	[EPP_INDEX_BALANCE_PERFORMANCE] =
> HWP_EPP_BALANCE_PERFORMANCE,
> > -	[EPP_INDEX_BALANCE_POWERSAVE] =
> HWP_EPP_BALANCE_POWERSAVE,
> > -	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
> > -};
> > -
> >  static int intel_pstate_get_energy_pref_index(struct cpudata
> > *cpu_data, int *raw_epp)  {
> >  	s16 epp;
> > diff --git a/include/linux/cpufreq_common.h
> > b/include/linux/cpufreq_common.h new file mode 100644 index
> > 000000000000..c1224e3bc68b
> > --- /dev/null
> > +++ b/include/linux/cpufreq_common.h
> > @@ -0,0 +1,53 @@
> > +/* SPDX-License-Identifier: GPL-2.0-only */
> > +/*
> > + * linux/include/linux/cpufreq_common.h
> > + *
> > + * Copyright (C) 2022 Advanced Micro Devices, Inc.
> > + *
> > + * Author: Perry Yuan <Perry.Yuan@amd.com>  */
> > +
> > +#ifndef _LINUX_CPUFREQ_COMMON_H
> > +#define _LINUX_CPUFREQ_COMMON_H
> > +/*
> > + * EPP/EPB display strings corresponding to EPP index in the
> > + * energy_perf_strings[]
> > + *	index		String
> > + *-------------------------------------
> > + *	0		default
> > + *	1		performance
> > + *	2		balance_performance
> > + *	3		balance_power
> > + *	4		power
> > + */
> > +
> > +#define HWP_EPP_PERFORMANCE		0x00
> > +#define HWP_EPP_BALANCE_PERFORMANCE	0x80
> > +#define HWP_EPP_BALANCE_POWERSAVE	0xC0
> > +#define HWP_EPP_POWERSAVE		0xFF
> > +
> > +enum energy_perf_value_index {
> > +	EPP_INDEX_DEFAULT = 0,
> > +	EPP_INDEX_PERFORMANCE,
> > +	EPP_INDEX_BALANCE_PERFORMANCE,
> > +	EPP_INDEX_BALANCE_POWERSAVE,
> > +	EPP_INDEX_POWERSAVE,
> > +};
> > +
> > +static const char * const energy_perf_strings[] = {
> > +	[EPP_INDEX_DEFAULT] = "default",
> > +	[EPP_INDEX_PERFORMANCE] = "performance",
> > +	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
> > +	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
> > +	[EPP_INDEX_POWERSAVE] = "power",
> > +	NULL
> > +};
> > +
> > +static unsigned int epp_values[] = {
> > +	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
> > +	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
> > +	[EPP_INDEX_BALANCE_PERFORMANCE] =
> HWP_EPP_BALANCE_PERFORMANCE,
> > +	[EPP_INDEX_BALANCE_POWERSAVE] =
> HWP_EPP_BALANCE_POWERSAVE,
> > +	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE, }; #endif /*
> > +_LINUX_CPUFREQ_COMMON_H */
> > --
> > 2.34.1
> >
Huang Rui Dec. 12, 2022, 1:28 a.m. UTC | #3 
On Fri, Dec 09, 2022 at 04:54:54PM +0800, Yuan, Perry wrote:
> [AMD Official Use Only - General]
> 
> 
> 
> > -----Original Message-----
> > From: Huang, Ray <Ray.Huang@amd.com>
> > Sent: Friday, December 9, 2022 4:01 PM
> > To: Yuan, Perry <Perry.Yuan@amd.com>
> > Cc: rafael.j.wysocki@intel.com; Limonciello, Mario
> > <Mario.Limonciello@amd.com>; viresh.kumar@linaro.org; Sharma, Deepak
> > <Deepak.Sharma@amd.com>; Fontenot, Nathan
> > <Nathan.Fontenot@amd.com>; Deucher, Alexander
> > <Alexander.Deucher@amd.com>; Huang, Shimmer
> > <Shimmer.Huang@amd.com>; Du, Xiaojian <Xiaojian.Du@amd.com>; Meng,
> > Li (Jassmine) <Li.Meng@amd.com>; Karny, Wyes <Wyes.Karny@amd.com>;
> > linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> > Subject: Re: [PATCH v7 03/13] cpufreq: intel_pstate: use common macro
> > definition for Energy Preference Performance(EPP)
> > 
> > On Thu, Dec 08, 2022 at 07:18:42PM +0800, Yuan, Perry wrote:
> > > make the energy preference performance strings and profiles using one
> > > common header for intel_pstate driver, then the amd_pstate epp driver
> > > can use the common header as well. This will simpify the intel_pstate
> > > and amd_pstate driver.
> > >
> > > Signed-off-by: Perry Yuan <perry.yuan@amd.com>
> > 
> > Please address the comment in V6:
> > 
> > https://lore.kernel.org/linux-
> > pm/Y43aq2gMKnFRIhxh@amd.com/T/#md503ee2fa32858e6cc9ab4da9ec1b8
> > 9a6bae6058
> > 
> > Thanks,
> > Ray
> 
> Talked with Mario as well, will fix the build failure and get this changed in V8. 
> Thanks for reviewing.
> 

Please make sure you addressed all comment, then send the new version of
series.
Yuan, Perry Dec. 19, 2022, 8:51 a.m. UTC | #4 
[AMD Official Use Only - General]

Hi Ray. 

> -----Original Message-----
> From: Huang, Ray <Ray.Huang@amd.com>
> Sent: Monday, December 12, 2022 9:29 AM
> To: Yuan, Perry <Perry.Yuan@amd.com>
> Cc: rafael.j.wysocki@intel.com; Limonciello, Mario
> <Mario.Limonciello@amd.com>; viresh.kumar@linaro.org; Sharma, Deepak
> <Deepak.Sharma@amd.com>; Fontenot, Nathan
> <Nathan.Fontenot@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Huang, Shimmer
> <Shimmer.Huang@amd.com>; Du, Xiaojian <Xiaojian.Du@amd.com>; Meng,
> Li (Jassmine) <Li.Meng@amd.com>; Karny, Wyes <Wyes.Karny@amd.com>;
> linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v7 03/13] cpufreq: intel_pstate: use common macro
> definition for Energy Preference Performance(EPP)
> 
> On Fri, Dec 09, 2022 at 04:54:54PM +0800, Yuan, Perry wrote:
> > [AMD Official Use Only - General]
> >
> >
> >
> > > -----Original Message-----
> > > From: Huang, Ray <Ray.Huang@amd.com>
> > > Sent: Friday, December 9, 2022 4:01 PM
> > > To: Yuan, Perry <Perry.Yuan@amd.com>
> > > Cc: rafael.j.wysocki@intel.com; Limonciello, Mario
> > > <Mario.Limonciello@amd.com>; viresh.kumar@linaro.org; Sharma,
> Deepak
> > > <Deepak.Sharma@amd.com>; Fontenot, Nathan
> <Nathan.Fontenot@amd.com>;
> > > Deucher, Alexander <Alexander.Deucher@amd.com>; Huang, Shimmer
> > > <Shimmer.Huang@amd.com>; Du, Xiaojian <Xiaojian.Du@amd.com>;
> Meng,
> > > Li (Jassmine) <Li.Meng@amd.com>; Karny, Wyes
> <Wyes.Karny@amd.com>;
> > > linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> > > Subject: Re: [PATCH v7 03/13] cpufreq: intel_pstate: use common
> > > macro definition for Energy Preference Performance(EPP)
> > >
> > > On Thu, Dec 08, 2022 at 07:18:42PM +0800, Yuan, Perry wrote:
> > > > make the energy preference performance strings and profiles using
> > > > one common header for intel_pstate driver, then the amd_pstate epp
> > > > driver can use the common header as well. This will simpify the
> > > > intel_pstate and amd_pstate driver.
> > > >
> > > > Signed-off-by: Perry Yuan <perry.yuan@amd.com>
> > >
> > > Please address the comment in V6:
> > >
> > > https://lore.kernel.org/linux-
> > >
> pm/Y43aq2gMKnFRIhxh@amd.com/T/#md503ee2fa32858e6cc9ab4da9ec1b
> 8
> > > 9a6bae6058
> > >
> > > Thanks,
> > > Ray
> >
> > Talked with Mario as well, will fix the build failure and get this changed in
> V8.
> > Thanks for reviewing.
> >
> 
> Please make sure you addressed all comment, then send the new version of
> series.

The common code  change was made in v8 series, Please take a look if.
Thanks.
diff mbox series

Patch

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 4a2af82553e4..3983378cff5b 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -472,10 +472,6 @@ 
 #define HWP_MAX_PERF(x) 		((x & 0xff) << 8)
 #define HWP_DESIRED_PERF(x)		((x & 0xff) << 16)
 #define HWP_ENERGY_PERF_PREFERENCE(x)	(((unsigned long long) x & 0xff) << 24)
-#define HWP_EPP_PERFORMANCE		0x00
-#define HWP_EPP_BALANCE_PERFORMANCE	0x80
-#define HWP_EPP_BALANCE_POWERSAVE	0xC0
-#define HWP_EPP_POWERSAVE		0xFF
 #define HWP_ACTIVITY_WINDOW(x)		((unsigned long long)(x & 0xff3) << 32)
 #define HWP_PACKAGE_CONTROL(x)		((unsigned long long)(x & 0x1) << 42)
 
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index ad9be31753b6..1b842ed874ab 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -26,6 +26,7 @@ 
 #include <linux/vmalloc.h>
 #include <linux/pm_qos.h>
 #include <trace/events/power.h>
+#include <linux/cpufreq_common.h>
 
 #include <asm/cpu.h>
 #include <asm/div64.h>
@@ -628,42 +629,6 @@  static int intel_pstate_set_epb(int cpu, s16 pref)
 	return 0;
 }
 
-/*
- * EPP/EPB display strings corresponding to EPP index in the
- * energy_perf_strings[]
- *	index		String
- *-------------------------------------
- *	0		default
- *	1		performance
- *	2		balance_performance
- *	3		balance_power
- *	4		power
- */
-
-enum energy_perf_value_index {
-	EPP_INDEX_DEFAULT = 0,
-	EPP_INDEX_PERFORMANCE,
-	EPP_INDEX_BALANCE_PERFORMANCE,
-	EPP_INDEX_BALANCE_POWERSAVE,
-	EPP_INDEX_POWERSAVE,
-};
-
-static const char * const energy_perf_strings[] = {
-	[EPP_INDEX_DEFAULT] = "default",
-	[EPP_INDEX_PERFORMANCE] = "performance",
-	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
-	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
-	[EPP_INDEX_POWERSAVE] = "power",
-	NULL
-};
-static unsigned int epp_values[] = {
-	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
-	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
-	[EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
-	[EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
-	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
-};
-
 static int intel_pstate_get_energy_pref_index(struct cpudata *cpu_data, int *raw_epp)
 {
 	s16 epp;
diff --git a/include/linux/cpufreq_common.h b/include/linux/cpufreq_common.h
new file mode 100644
index 000000000000..c1224e3bc68b
--- /dev/null
+++ b/include/linux/cpufreq_common.h
@@ -0,0 +1,53 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/include/linux/cpufreq_common.h
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ *
+ * Author: Perry Yuan <Perry.Yuan@amd.com>
+ */
+
+#ifndef _LINUX_CPUFREQ_COMMON_H
+#define _LINUX_CPUFREQ_COMMON_H
+/*
+ * EPP/EPB display strings corresponding to EPP index in the
+ * energy_perf_strings[]
+ *	index		String
+ *-------------------------------------
+ *	0		default
+ *	1		performance
+ *	2		balance_performance
+ *	3		balance_power
+ *	4		power
+ */
+
+#define HWP_EPP_PERFORMANCE		0x00
+#define HWP_EPP_BALANCE_PERFORMANCE	0x80
+#define HWP_EPP_BALANCE_POWERSAVE	0xC0
+#define HWP_EPP_POWERSAVE		0xFF
+
+enum energy_perf_value_index {
+	EPP_INDEX_DEFAULT = 0,
+	EPP_INDEX_PERFORMANCE,
+	EPP_INDEX_BALANCE_PERFORMANCE,
+	EPP_INDEX_BALANCE_POWERSAVE,
+	EPP_INDEX_POWERSAVE,
+};
+
+static const char * const energy_perf_strings[] = {
+	[EPP_INDEX_DEFAULT] = "default",
+	[EPP_INDEX_PERFORMANCE] = "performance",
+	[EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
+	[EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
+	[EPP_INDEX_POWERSAVE] = "power",
+	NULL
+};
+
+static unsigned int epp_values[] = {
+	[EPP_INDEX_DEFAULT] = 0, /* Unused index */
+	[EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
+	[EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
+	[EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
+	[EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
+};
+#endif /* _LINUX_CPUFREQ_COMMON_H */