Loading Documentation/admin-guide/pm/amd-pstate.rst +17 −1 Original line number Diff line number Diff line Loading @@ -281,6 +281,22 @@ integer values defined between 0 to 255 when EPP feature is enabled by platform firmware, if EPP feature is disabled, driver will ignore the written value This attribute is read-write. ``boost`` The `boost` sysfs attribute provides control over the CPU core performance boost, allowing users to manage the maximum frequency limitation of the CPU. This attribute can be used to enable or disable the boost feature on individual CPUs. When the boost feature is enabled, the CPU can dynamically increase its frequency beyond the base frequency, providing enhanced performance for demanding workloads. On the other hand, disabling the boost feature restricts the CPU to operate at the base frequency, which may be desirable in certain scenarios to prioritize power efficiency or manage temperature. To manipulate the `boost` attribute, users can write a value of `0` to disable the boost or `1` to enable it, for the respective CPU using the sysfs path `/sys/devices/system/cpu/cpuX/cpufreq/boost`, where `X` represents the CPU number. Other performance and frequency values can be read back from ``/sys/devices/system/cpu/cpuX/acpi_cppc/``, see :ref:`cppc_sysfs`. Loading Loading @@ -406,7 +422,7 @@ control its functionality at the system level. They are located in the ``/sys/devices/system/cpu/amd_pstate/`` directory and affect all CPUs. ``status`` Operation mode of the driver: "active", "passive" or "disable". Operation mode of the driver: "active", "passive", "guided" or "disable". "active" The driver is functional and in the ``active mode`` Loading Documentation/admin-guide/pm/cpufreq.rst +4 −0 Original line number Diff line number Diff line Loading @@ -267,6 +267,10 @@ are the following: ``related_cpus`` List of all (online and offline) CPUs belonging to this policy. ``scaling_available_frequencies`` List of available frequencies of the CPUs belonging to this policy (in kHz). ``scaling_available_governors`` List of ``CPUFreq`` scaling governors present in the kernel that can be attached to this policy or (if the |intel_pstate| scaling driver is Loading MAINTAINERS +1 −0 Original line number Diff line number Diff line Loading @@ -12968,6 +12968,7 @@ F: Documentation/arch/loongarch/ F: Documentation/translations/zh_CN/arch/loongarch/ F: arch/loongarch/ F: drivers/*/*loongarch* F: drivers/cpufreq/loongson3_cpufreq.c LOONGSON GPIO DRIVER M: Yinbo Zhu <zhuyinbo@loongson.cn> Loading arch/x86/include/asm/cpufeatures.h +2 −0 Original line number Diff line number Diff line Loading @@ -361,6 +361,7 @@ #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ #define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* "" HWP Highest perf change */ #define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */ /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */ Loading Loading @@ -470,6 +471,7 @@ #define X86_FEATURE_BHI_CTRL (21*32+ 2) /* "" BHI_DIS_S HW control available */ #define X86_FEATURE_CLEAR_BHB_HW (21*32+ 3) /* "" BHI_DIS_S HW control enabled */ #define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* "" Clear branch history at vmexit using SW loop */ #define X86_FEATURE_FAST_CPPC (21*32 + 5) /* "" AMD Fast CPPC */ /* * BUG word(s) Loading arch/x86/include/asm/msr-index.h +2 −0 Original line number Diff line number Diff line Loading @@ -781,6 +781,8 @@ #define MSR_K7_HWCR_IRPERF_EN BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT) #define MSR_K7_FID_VID_CTL 0xc0010041 #define MSR_K7_FID_VID_STATUS 0xc0010042 #define MSR_K7_HWCR_CPB_DIS_BIT 25 #define MSR_K7_HWCR_CPB_DIS BIT_ULL(MSR_K7_HWCR_CPB_DIS_BIT) /* K6 MSRs */ #define MSR_K6_WHCR 0xc0000082 Loading Loading
Documentation/admin-guide/pm/amd-pstate.rst +17 −1 Original line number Diff line number Diff line Loading @@ -281,6 +281,22 @@ integer values defined between 0 to 255 when EPP feature is enabled by platform firmware, if EPP feature is disabled, driver will ignore the written value This attribute is read-write. ``boost`` The `boost` sysfs attribute provides control over the CPU core performance boost, allowing users to manage the maximum frequency limitation of the CPU. This attribute can be used to enable or disable the boost feature on individual CPUs. When the boost feature is enabled, the CPU can dynamically increase its frequency beyond the base frequency, providing enhanced performance for demanding workloads. On the other hand, disabling the boost feature restricts the CPU to operate at the base frequency, which may be desirable in certain scenarios to prioritize power efficiency or manage temperature. To manipulate the `boost` attribute, users can write a value of `0` to disable the boost or `1` to enable it, for the respective CPU using the sysfs path `/sys/devices/system/cpu/cpuX/cpufreq/boost`, where `X` represents the CPU number. Other performance and frequency values can be read back from ``/sys/devices/system/cpu/cpuX/acpi_cppc/``, see :ref:`cppc_sysfs`. Loading Loading @@ -406,7 +422,7 @@ control its functionality at the system level. They are located in the ``/sys/devices/system/cpu/amd_pstate/`` directory and affect all CPUs. ``status`` Operation mode of the driver: "active", "passive" or "disable". Operation mode of the driver: "active", "passive", "guided" or "disable". "active" The driver is functional and in the ``active mode`` Loading
Documentation/admin-guide/pm/cpufreq.rst +4 −0 Original line number Diff line number Diff line Loading @@ -267,6 +267,10 @@ are the following: ``related_cpus`` List of all (online and offline) CPUs belonging to this policy. ``scaling_available_frequencies`` List of available frequencies of the CPUs belonging to this policy (in kHz). ``scaling_available_governors`` List of ``CPUFreq`` scaling governors present in the kernel that can be attached to this policy or (if the |intel_pstate| scaling driver is Loading
MAINTAINERS +1 −0 Original line number Diff line number Diff line Loading @@ -12968,6 +12968,7 @@ F: Documentation/arch/loongarch/ F: Documentation/translations/zh_CN/arch/loongarch/ F: arch/loongarch/ F: drivers/*/*loongarch* F: drivers/cpufreq/loongson3_cpufreq.c LOONGSON GPIO DRIVER M: Yinbo Zhu <zhuyinbo@loongson.cn> Loading
arch/x86/include/asm/cpufeatures.h +2 −0 Original line number Diff line number Diff line Loading @@ -361,6 +361,7 @@ #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ #define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* "" HWP Highest perf change */ #define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */ /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */ Loading Loading @@ -470,6 +471,7 @@ #define X86_FEATURE_BHI_CTRL (21*32+ 2) /* "" BHI_DIS_S HW control available */ #define X86_FEATURE_CLEAR_BHB_HW (21*32+ 3) /* "" BHI_DIS_S HW control enabled */ #define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* "" Clear branch history at vmexit using SW loop */ #define X86_FEATURE_FAST_CPPC (21*32 + 5) /* "" AMD Fast CPPC */ /* * BUG word(s) Loading
arch/x86/include/asm/msr-index.h +2 −0 Original line number Diff line number Diff line Loading @@ -781,6 +781,8 @@ #define MSR_K7_HWCR_IRPERF_EN BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT) #define MSR_K7_FID_VID_CTL 0xc0010041 #define MSR_K7_FID_VID_STATUS 0xc0010042 #define MSR_K7_HWCR_CPB_DIS_BIT 25 #define MSR_K7_HWCR_CPB_DIS BIT_ULL(MSR_K7_HWCR_CPB_DIS_BIT) /* K6 MSRs */ #define MSR_K6_WHCR 0xc0000082 Loading
