#ifndef __ASM_GENERIC_MODULE_H #define __ASM_GENERIC_MODULE_H /* * Many architectures just need a simple module * loader without arch specific data. */ #ifndef CONFIG_HAVE_MOD_ARCH_SPECIFIC struct mod_arch_specific { }; #endif #ifdef CONFIG_64BIT #define Elf_Shdr Elf64_Shdr #define Elf_Phdr Elf64_Phdr #define Elf_Sym Elf64_Sym #define Elf_Dyn Elf64_Dyn #define Elf_Ehdr Elf64_Ehdr #define Elf_Addr Elf64_Addr #ifdef CONFIG_MODULES_USE_ELF_REL #define Elf_Rel Elf64_Rel #endif #ifdef CONFIG_MODULES_USE_ELF_RELA #define Elf_Rela Elf64_Rela #endif #define ELF_R_TYPE(X) ELF64_R_TYPE(X) #define ELF_R_SYM(X) ELF64_R_SYM(X) #else /* CONFIG_64BIT */ #define Elf_Shdr Elf32_Shdr #define Elf_Phdr Elf32_Phdr #define Elf_Sym Elf32_Sym #define Elf_Dyn Elf32_Dyn #define Elf_Ehdr Elf32_Ehdr #define Elf_Addr Elf32_Addr #ifdef CONFIG_MODULES_USE_ELF_REL #define Elf_Rel Elf32_Rel #endif #ifdef CONFIG_MODULES_USE_ELF_RELA #define Elf_Rela Elf32_Rela #endif #define ELF_R_TYPE(X) ELF32_R_TYPE(X) #define ELF_R_SYM(X) ELF32_R_SYM(X) #endif #endif /* __ASM_GENERIC_MODULE_H */ option value='emaclite-cleanup'>emaclite-cleanup net-next plumbingsTobias Klauser
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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2017-02-03 14:18:39 -0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-04 00:11:08 +0100
commit6e978b22efa1db9f6e71b24440b5f1d93e968ee3 (patch)
treec666f7a26b860674848949e39a610222b0723f89 /include/dt-bindings/reset/qcom,gcc-msm8916.h
parent3c223c19aea85d3dda1416c187915f4a30b04b1f (diff)
cpufreq: intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/dt-bindings/reset/qcom,gcc-msm8916.h')