50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Header file for CPUFreq ondemand governor and related code.
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*
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* Copyright (C) 2016, Intel Corporation
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* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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*/
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#include "cpufreq_governor.h"
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struct od_policy_dbs_info {
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struct policy_dbs_info policy_dbs;
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unsigned int freq_lo;
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unsigned int freq_lo_delay_us;
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unsigned int freq_hi_delay_us;
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unsigned int sample_type:1;
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};
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static inline struct od_policy_dbs_info *to_dbs_info(struct policy_dbs_info *policy_dbs)
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{
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return container_of(policy_dbs, struct od_policy_dbs_info, policy_dbs);
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}
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struct od_dbs_tuners {
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unsigned int powersave_bias;
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};
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#ifdef CONFIG_X86
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#include <asm/cpu_device_id.h>
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/*
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* Not all CPUs want IO time to be accounted as busy; this depends on
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* how efficient idling at a higher frequency/voltage is.
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*
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* Pavel Machek says this is not so for various generations of AMD and
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* old Intel systems. Mike Chan (android.com) claims this is also not
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* true for ARM.
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*
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* Because of this, select a known series of Intel CPUs (Family 6 and
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* later) by default, and leave all others up to the user.
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*/
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static inline bool od_should_io_be_busy(void)
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{
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return (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
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boot_cpu_data.x86_vfm >= INTEL_PENTIUM_PRO);
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}
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#else
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static inline bool od_should_io_be_busy(void) { return false; }
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#endif
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