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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC PATCH 01/31] cpufreq: move cpufreq.h file to the xen/include/xen location
On Thu, 9 Nov 2017, Oleksandr Tyshchenko wrote: > From: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx> > > Cpufreq driver should be more generalizable (not ACPI-specific). > Thus this file should be placed to more convenient location. > > This is a rebased version of the original patch: > https://lists.xen.org/archives/html/xen-devel/2014-11/msg00938.html > > Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx> > Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx> > CC: Jan Beulich <jbeulich@xxxxxxxx> > CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> > CC: Stefano Stabellini <sstabellini@xxxxxxxxxx> > CC: Julien Grall <julien.grall@xxxxxxxxxx> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> > --- > MAINTAINERS | 1 + > xen/arch/x86/acpi/cpu_idle.c | 2 +- > xen/arch/x86/acpi/cpufreq/cpufreq.c | 2 +- > xen/arch/x86/acpi/cpufreq/powernow.c | 2 +- > xen/arch/x86/acpi/power.c | 2 +- > xen/arch/x86/cpu/mwait-idle.c | 2 +- > xen/drivers/acpi/pmstat.c | 2 +- > xen/drivers/cpufreq/cpufreq.c | 2 +- > xen/drivers/cpufreq/cpufreq_misc_governors.c | 2 +- > xen/drivers/cpufreq/cpufreq_ondemand.c | 4 +- > xen/drivers/cpufreq/utility.c | 2 +- > xen/include/acpi/cpufreq/cpufreq.h | 245 -------------------------- > xen/include/xen/cpufreq.h | 248 > +++++++++++++++++++++++++++ > 13 files changed, 260 insertions(+), 256 deletions(-) > delete mode 100644 xen/include/acpi/cpufreq/cpufreq.h > create mode 100644 xen/include/xen/cpufreq.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index 5b9e123..524e067 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -295,6 +295,7 @@ X: xen/arch/x86/acpi/boot.c > X: xen/arch/x86/acpi/lib.c > F: xen/drivers/cpufreq/ > F: xen/include/acpi/cpufreq/ > +F: xen/include/xen/cpufreq.h > > PUBLIC I/O INTERFACES AND PV DRIVERS DESIGNS > M: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c > index 482b8a7..c66622e 100644 > --- a/xen/arch/x86/acpi/cpu_idle.c > +++ b/xen/arch/x86/acpi/cpu_idle.c > @@ -49,7 +49,7 @@ > #include <xen/softirq.h> > #include <public/platform.h> > #include <public/sysctl.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > #include <asm/apic.h> > #include <asm/cpuidle.h> > #include <asm/mwait.h> > diff --git a/xen/arch/x86/acpi/cpufreq/cpufreq.c > b/xen/arch/x86/acpi/cpufreq/cpufreq.c > index 1f8d02a..bd82025 100644 > --- a/xen/arch/x86/acpi/cpufreq/cpufreq.c > +++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c > @@ -41,7 +41,7 @@ > #include <asm/percpu.h> > #include <asm/cpufeature.h> > #include <acpi/acpi.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > enum { > UNDEFINED_CAPABLE = 0, > diff --git a/xen/arch/x86/acpi/cpufreq/powernow.c > b/xen/arch/x86/acpi/cpufreq/powernow.c > index 8f1ac74..79f55a3 100644 > --- a/xen/arch/x86/acpi/cpufreq/powernow.c > +++ b/xen/arch/x86/acpi/cpufreq/powernow.c > @@ -35,7 +35,7 @@ > #include <asm/percpu.h> > #include <asm/cpufeature.h> > #include <acpi/acpi.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > #define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007 > #define CPB_CAPABLE 0x00000200 > diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c > index 1e4e568..beebd5a 100644 > --- a/xen/arch/x86/acpi/power.c > +++ b/xen/arch/x86/acpi/power.c > @@ -28,7 +28,7 @@ > #include <asm/tboot.h> > #include <asm/apic.h> > #include <asm/io_apic.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > uint32_t system_reset_counter = 1; > > diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c > index 762dff1..29f0286 100644 > --- a/xen/arch/x86/cpu/mwait-idle.c > +++ b/xen/arch/x86/cpu/mwait-idle.c > @@ -58,7 +58,7 @@ > #include <asm/hpet.h> > #include <asm/mwait.h> > #include <asm/msr.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > #define MWAIT_IDLE_VERSION "0.4.1" > #undef PREFIX > diff --git a/xen/drivers/acpi/pmstat.c b/xen/drivers/acpi/pmstat.c > index 2a6c4c7..2dbde1c 100644 > --- a/xen/drivers/acpi/pmstat.c > +++ b/xen/drivers/acpi/pmstat.c > @@ -38,7 +38,7 @@ > #include <xen/acpi.h> > > #include <public/sysctl.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > #include <xen/pmstat.h> > > DEFINE_PER_CPU_READ_MOSTLY(struct pm_px *, cpufreq_statistic_data); > diff --git a/xen/drivers/cpufreq/cpufreq.c b/xen/drivers/cpufreq/cpufreq.c > index 212f48f..ab909e2 100644 > --- a/xen/drivers/cpufreq/cpufreq.c > +++ b/xen/drivers/cpufreq/cpufreq.c > @@ -43,7 +43,7 @@ > #include <asm/processor.h> > #include <asm/percpu.h> > #include <acpi/acpi.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > static unsigned int __read_mostly usr_min_freq; > static unsigned int __read_mostly usr_max_freq; > diff --git a/xen/drivers/cpufreq/cpufreq_misc_governors.c > b/xen/drivers/cpufreq/cpufreq_misc_governors.c > index 746bbcd..4a5510c 100644 > --- a/xen/drivers/cpufreq/cpufreq_misc_governors.c > +++ b/xen/drivers/cpufreq/cpufreq_misc_governors.c > @@ -18,7 +18,7 @@ > #include <xen/init.h> > #include <xen/percpu.h> > #include <xen/sched.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > /* > * cpufreq userspace governor > diff --git a/xen/drivers/cpufreq/cpufreq_ondemand.c > b/xen/drivers/cpufreq/cpufreq_ondemand.c > index fe6c63d..1c384ec 100644 > --- a/xen/drivers/cpufreq/cpufreq_ondemand.c > +++ b/xen/drivers/cpufreq/cpufreq_ondemand.c > @@ -1,5 +1,5 @@ > /* > - * xen/arch/x86/acpi/cpufreq/cpufreq_ondemand.c > + * xen/drivers/cpufreq/cpufreq_ondemand.c > * > * Copyright (C) 2001 Russell King > * (C) 2003 Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>. > @@ -18,7 +18,7 @@ > #include <xen/types.h> > #include <xen/sched.h> > #include <xen/timer.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > > #define DEF_FREQUENCY_UP_THRESHOLD (80) > #define MIN_FREQUENCY_UP_THRESHOLD (11) > diff --git a/xen/drivers/cpufreq/utility.c b/xen/drivers/cpufreq/utility.c > index 53879fe..a687e5a 100644 > --- a/xen/drivers/cpufreq/utility.c > +++ b/xen/drivers/cpufreq/utility.c > @@ -28,7 +28,7 @@ > #include <xen/sched.h> > #include <xen/timer.h> > #include <xen/trace.h> > -#include <acpi/cpufreq/cpufreq.h> > +#include <xen/cpufreq.h> > #include <public/sysctl.h> > > struct cpufreq_driver *cpufreq_driver; > diff --git a/xen/include/acpi/cpufreq/cpufreq.h > b/xen/include/acpi/cpufreq/cpufreq.h > deleted file mode 100644 > index a5cd7d0..0000000 > --- a/xen/include/acpi/cpufreq/cpufreq.h > +++ /dev/null > @@ -1,245 +0,0 @@ > -/* > - * xen/include/acpi/cpufreq/cpufreq.h > - * > - * Copyright (C) 2001 Russell King > - * (C) 2002 - 2003 Dominik Brodowski <linux@xxxxxxxx> > - * > - * $Id: cpufreq.h,v 1.36 2003/01/20 17:31:48 db Exp $ > - * > - * This program is free software; you can redistribute it and/or modify > - * it under the terms of the GNU General Public License version 2 as > - * published by the Free Software Foundation. > - */ > - > -#ifndef __XEN_CPUFREQ_PM_H__ > -#define __XEN_CPUFREQ_PM_H__ > - > -#include <xen/types.h> > -#include <xen/list.h> > -#include <xen/cpumask.h> > - > -#include "processor_perf.h" > - > -DECLARE_PER_CPU(spinlock_t, cpufreq_statistic_lock); > - > -extern bool_t cpufreq_verbose; > - > -struct cpufreq_governor; > - > -struct acpi_cpufreq_data { > - struct processor_performance *acpi_data; > - struct cpufreq_frequency_table *freq_table; > - unsigned int arch_cpu_flags; > -}; > - > -extern struct acpi_cpufreq_data *cpufreq_drv_data[NR_CPUS]; > - > -struct cpufreq_cpuinfo { > - unsigned int max_freq; > - unsigned int second_max_freq; /* P1 if Turbo Mode is on */ > - unsigned int min_freq; > - unsigned int transition_latency; /* in 10^(-9) s = nanoseconds */ > -}; > - > -struct perf_limits { > - bool_t no_turbo; > - bool_t turbo_disabled; > - uint32_t turbo_pct; > - uint32_t max_perf_pct; /* max performance in percentage */ > - uint32_t min_perf_pct; /* min performance in percentage */ > - uint32_t max_perf; > - uint32_t min_perf; > - uint32_t max_policy_pct; > - uint32_t min_policy_pct; > -}; > - > -struct cpufreq_policy { > - cpumask_var_t cpus; /* affected CPUs */ > - unsigned int shared_type; /* ANY or ALL affected CPUs > - should set cpufreq */ > - unsigned int cpu; /* cpu nr of registered CPU */ > - struct cpufreq_cpuinfo cpuinfo; > - > - unsigned int min; /* in kHz */ > - unsigned int max; /* in kHz */ > - unsigned int cur; /* in kHz, only needed if cpufreq > - * governors are used */ > - struct perf_limits limits; > - struct cpufreq_governor *governor; > - > - bool_t resume; /* flag for cpufreq 1st run > - * S3 wakeup, hotplug cpu, etc */ > - s8 turbo; /* tristate flag: 0 for unsupported > - * -1 for disable, 1 for enabled > - * See CPUFREQ_TURBO_* below for defines */ > - bool_t aperf_mperf; /* CPU has APERF/MPERF MSRs */ > -}; > -DECLARE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_policy); > - > -extern int __cpufreq_set_policy(struct cpufreq_policy *data, > - struct cpufreq_policy *policy); > - > -#define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ > -#define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ > -#define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ > -#define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent > CPU*/ > - > -/******************** cpufreq transition notifiers *******************/ > - > -struct cpufreq_freqs { > - unsigned int cpu; /* cpu nr */ > - unsigned int old; > - unsigned int new; > - u8 flags; /* flags of cpufreq_driver, see below. */ > -}; > - > - > -/********************************************************************* > - * CPUFREQ GOVERNORS * > - *********************************************************************/ > - > -#define CPUFREQ_GOV_START 1 > -#define CPUFREQ_GOV_STOP 2 > -#define CPUFREQ_GOV_LIMITS 3 > - > -struct cpufreq_governor { > - char name[CPUFREQ_NAME_LEN]; > - int (*governor)(struct cpufreq_policy *policy, > - unsigned int event); > - bool_t (*handle_option)(const char *name, const char *value); > - struct list_head governor_list; > -}; > - > -extern struct cpufreq_governor *cpufreq_opt_governor; > -extern struct cpufreq_governor cpufreq_gov_dbs; > -extern struct cpufreq_governor cpufreq_gov_userspace; > -extern struct cpufreq_governor cpufreq_gov_performance; > -extern struct cpufreq_governor cpufreq_gov_powersave; > - > -extern struct list_head cpufreq_governor_list; > - > -extern int cpufreq_register_governor(struct cpufreq_governor *governor); > -extern struct cpufreq_governor *__find_governor(const char *governor); > -#define CPUFREQ_DEFAULT_GOVERNOR &cpufreq_gov_dbs > - > -/* pass a target to the cpufreq driver */ > -extern int __cpufreq_driver_target(struct cpufreq_policy *policy, > - unsigned int target_freq, > - unsigned int relation); > - > -#define GOV_GETAVG 1 > -#define USR_GETAVG 2 > -extern int cpufreq_driver_getavg(unsigned int cpu, unsigned int flag); > - > -#define CPUFREQ_TURBO_DISABLED -1 > -#define CPUFREQ_TURBO_UNSUPPORTED 0 > -#define CPUFREQ_TURBO_ENABLED 1 > - > -extern int cpufreq_update_turbo(int cpuid, int new_state); > -extern int cpufreq_get_turbo_status(int cpuid); > - > -static __inline__ int > -__cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) > -{ > - return policy->governor->governor(policy, event); > -} > - > - > -/********************************************************************* > - * CPUFREQ DRIVER INTERFACE * > - *********************************************************************/ > - > -#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */ > -#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */ > - > -struct cpufreq_driver { > - char name[CPUFREQ_NAME_LEN]; > - int (*init)(struct cpufreq_policy *policy); > - int (*verify)(struct cpufreq_policy *policy); > - int (*setpolicy)(struct cpufreq_policy *policy); > - int (*update)(int cpuid, struct cpufreq_policy *policy); > - int (*target)(struct cpufreq_policy *policy, > - unsigned int target_freq, > - unsigned int relation); > - unsigned int (*get)(unsigned int cpu); > - unsigned int (*getavg)(unsigned int cpu, unsigned int flag); > - int (*exit)(struct cpufreq_policy *policy); > -}; > - > -extern struct cpufreq_driver *cpufreq_driver; > - > -int cpufreq_register_driver(struct cpufreq_driver *); > - > -static __inline__ > -void cpufreq_verify_within_limits(struct cpufreq_policy *policy, > - unsigned int min, unsigned int max) > -{ > - if (policy->min < min) > - policy->min = min; > - if (policy->max < min) > - policy->max = min; > - if (policy->min > max) > - policy->min = max; > - if (policy->max > max) > - policy->max = max; > - if (policy->min > policy->max) > - policy->min = policy->max; > - return; > -} > - > - > -/********************************************************************* > - * FREQUENCY TABLE HELPERS * > - *********************************************************************/ > - > -#define CPUFREQ_ENTRY_INVALID ~0 > -#define CPUFREQ_TABLE_END ~1 > - > -struct cpufreq_frequency_table { > - unsigned int index; /* any */ > - unsigned int frequency; /* kHz - doesn't need to be in ascending > - * order */ > -}; > - > -int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, > - struct cpufreq_frequency_table *table); > - > -int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, > - struct cpufreq_frequency_table *table); > - > -int cpufreq_frequency_table_target(struct cpufreq_policy *policy, > - struct cpufreq_frequency_table *table, > - unsigned int target_freq, > - unsigned int relation, > - unsigned int *index); > - > - > -/********************************************************************* > - * UNIFIED DEBUG HELPERS * > - *********************************************************************/ > - > -struct cpu_dbs_info_s { > - uint64_t prev_cpu_idle; > - uint64_t prev_cpu_wall; > - struct cpufreq_policy *cur_policy; > - struct cpufreq_frequency_table *freq_table; > - int cpu; > - unsigned int enable:1; > - unsigned int stoppable:1; > - unsigned int turbo_enabled:1; > -}; > - > -int cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event); > -int get_cpufreq_ondemand_para(uint32_t *sampling_rate_max, > - uint32_t *sampling_rate_min, > - uint32_t *sampling_rate, > - uint32_t *up_threshold); > -int write_ondemand_sampling_rate(unsigned int sampling_rate); > -int write_ondemand_up_threshold(unsigned int up_threshold); > - > -int write_userspace_scaling_setspeed(unsigned int cpu, unsigned int freq); > - > -void cpufreq_dbs_timer_suspend(void); > -void cpufreq_dbs_timer_resume(void); > - > -#endif /* __XEN_CPUFREQ_PM_H__ */ > diff --git a/xen/include/xen/cpufreq.h b/xen/include/xen/cpufreq.h > new file mode 100644 > index 0000000..ed38a6c > --- /dev/null > +++ b/xen/include/xen/cpufreq.h > @@ -0,0 +1,248 @@ > +/* > + * xen/include/acpi/cpufreq/cpufreq.h > + * > + * Copyright (C) 2001 Russell King > + * (C) 2002 - 2003 Dominik Brodowski <linux@xxxxxxxx> > + * > + * $Id: cpufreq.h,v 1.36 2003/01/20 17:31:48 db Exp $ > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > +#ifndef __XEN_CPUFREQ_PM_H__ > +#define __XEN_CPUFREQ_PM_H__ > + > +#include <xen/types.h> > +#include <xen/list.h> > +#include <xen/percpu.h> > +#include <xen/spinlock.h> > +#include <xen/errno.h> > +#include <xen/cpumask.h> > + > +#include <acpi/cpufreq/processor_perf.h> > + > +DECLARE_PER_CPU(spinlock_t, cpufreq_statistic_lock); > + > +extern bool_t cpufreq_verbose; > + > +struct cpufreq_governor; > + > +struct acpi_cpufreq_data { > + struct processor_performance *acpi_data; > + struct cpufreq_frequency_table *freq_table; > + unsigned int arch_cpu_flags; > +}; > + > +extern struct acpi_cpufreq_data *cpufreq_drv_data[NR_CPUS]; > + > +struct cpufreq_cpuinfo { > + unsigned int max_freq; > + unsigned int second_max_freq; /* P1 if Turbo Mode is on */ > + unsigned int min_freq; > + unsigned int transition_latency; /* in 10^(-9) s = nanoseconds */ > +}; > + > +struct perf_limits { > + bool_t no_turbo; > + bool_t turbo_disabled; > + uint32_t turbo_pct; > + uint32_t max_perf_pct; /* max performance in percentage */ > + uint32_t min_perf_pct; /* min performance in percentage */ > + uint32_t max_perf; > + uint32_t min_perf; > + uint32_t max_policy_pct; > + uint32_t min_policy_pct; > +}; > + > +struct cpufreq_policy { > + cpumask_var_t cpus; /* affected CPUs */ > + unsigned int shared_type; /* ANY or ALL affected CPUs > + should set cpufreq */ > + unsigned int cpu; /* cpu nr of registered CPU */ > + struct cpufreq_cpuinfo cpuinfo; > + > + unsigned int min; /* in kHz */ > + unsigned int max; /* in kHz */ > + unsigned int cur; /* in kHz, only needed if cpufreq > + * governors are used */ > + struct perf_limits limits; > + struct cpufreq_governor *governor; > + > + bool_t resume; /* flag for cpufreq 1st run > + * S3 wakeup, hotplug cpu, etc */ > + s8 turbo; /* tristate flag: 0 for unsupported > + * -1 for disable, 1 for enabled > + * See CPUFREQ_TURBO_* below for defines */ > + bool_t aperf_mperf; /* CPU has APERF/MPERF MSRs */ > +}; > +DECLARE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_policy); > + > +extern int __cpufreq_set_policy(struct cpufreq_policy *data, > + struct cpufreq_policy *policy); > + > +#define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ > +#define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ > +#define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ > +#define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent > CPU*/ > + > +/******************** cpufreq transition notifiers *******************/ > + > +struct cpufreq_freqs { > + unsigned int cpu; /* cpu nr */ > + unsigned int old; > + unsigned int new; > + u8 flags; /* flags of cpufreq_driver, see below. */ > +}; > + > + > +/********************************************************************* > + * CPUFREQ GOVERNORS * > + *********************************************************************/ > + > +#define CPUFREQ_GOV_START 1 > +#define CPUFREQ_GOV_STOP 2 > +#define CPUFREQ_GOV_LIMITS 3 > + > +struct cpufreq_governor { > + char name[CPUFREQ_NAME_LEN]; > + int (*governor)(struct cpufreq_policy *policy, > + unsigned int event); > + bool_t (*handle_option)(const char *name, const char *value); > + struct list_head governor_list; > +}; > + > +extern struct cpufreq_governor *cpufreq_opt_governor; > +extern struct cpufreq_governor cpufreq_gov_dbs; > +extern struct cpufreq_governor cpufreq_gov_userspace; > +extern struct cpufreq_governor cpufreq_gov_performance; > +extern struct cpufreq_governor cpufreq_gov_powersave; > + > +extern struct list_head cpufreq_governor_list; > + > +extern int cpufreq_register_governor(struct cpufreq_governor *governor); > +extern struct cpufreq_governor *__find_governor(const char *governor); > +#define CPUFREQ_DEFAULT_GOVERNOR &cpufreq_gov_dbs > + > +/* pass a target to the cpufreq driver */ > +extern int __cpufreq_driver_target(struct cpufreq_policy *policy, > + unsigned int target_freq, > + unsigned int relation); > + > +#define GOV_GETAVG 1 > +#define USR_GETAVG 2 > +extern int cpufreq_driver_getavg(unsigned int cpu, unsigned int flag); > + > +#define CPUFREQ_TURBO_DISABLED -1 > +#define CPUFREQ_TURBO_UNSUPPORTED 0 > +#define CPUFREQ_TURBO_ENABLED 1 > + > +extern int cpufreq_update_turbo(int cpuid, int new_state); > +extern int cpufreq_get_turbo_status(int cpuid); > + > +static __inline__ int > +__cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) > +{ > + return policy->governor->governor(policy, event); > +} > + > + > +/********************************************************************* > + * CPUFREQ DRIVER INTERFACE * > + *********************************************************************/ > + > +#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */ > +#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */ > + > +struct cpufreq_driver { > + char name[CPUFREQ_NAME_LEN]; > + int (*init)(struct cpufreq_policy *policy); > + int (*verify)(struct cpufreq_policy *policy); > + int (*setpolicy)(struct cpufreq_policy *policy); > + int (*update)(int cpuid, struct cpufreq_policy *policy); > + int (*target)(struct cpufreq_policy *policy, > + unsigned int target_freq, > + unsigned int relation); > + unsigned int (*get)(unsigned int cpu); > + unsigned int (*getavg)(unsigned int cpu, unsigned int flag); > + int (*exit)(struct cpufreq_policy *policy); > +}; > + > +extern struct cpufreq_driver *cpufreq_driver; > + > +int cpufreq_register_driver(struct cpufreq_driver *); > + > +static __inline__ > +void cpufreq_verify_within_limits(struct cpufreq_policy *policy, > + unsigned int min, unsigned int max) > +{ > + if (policy->min < min) > + policy->min = min; > + if (policy->max < min) > + policy->max = min; > + if (policy->min > max) > + policy->min = max; > + if (policy->max > max) > + policy->max = max; > + if (policy->min > policy->max) > + policy->min = policy->max; > + return; > +} > + > + > +/********************************************************************* > + * FREQUENCY TABLE HELPERS * > + *********************************************************************/ > + > +#define CPUFREQ_ENTRY_INVALID ~0 > +#define CPUFREQ_TABLE_END ~1 > + > +struct cpufreq_frequency_table { > + unsigned int index; /* any */ > + unsigned int frequency; /* kHz - doesn't need to be in ascending > + * order */ > +}; > + > +int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, > + struct cpufreq_frequency_table *table); > + > +int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, > + struct cpufreq_frequency_table *table); > + > +int cpufreq_frequency_table_target(struct cpufreq_policy *policy, > + struct cpufreq_frequency_table *table, > + unsigned int target_freq, > + unsigned int relation, > + unsigned int *index); > + > + > +/********************************************************************* > + * UNIFIED DEBUG HELPERS * > + *********************************************************************/ > + > +struct cpu_dbs_info_s { > + uint64_t prev_cpu_idle; > + uint64_t prev_cpu_wall; > + struct cpufreq_policy *cur_policy; > + struct cpufreq_frequency_table *freq_table; > + int cpu; > + unsigned int enable:1; > + unsigned int stoppable:1; > + unsigned int turbo_enabled:1; > +}; > + > +int cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event); > +int get_cpufreq_ondemand_para(uint32_t *sampling_rate_max, > + uint32_t *sampling_rate_min, > + uint32_t *sampling_rate, > + uint32_t *up_threshold); > +int write_ondemand_sampling_rate(unsigned int sampling_rate); > +int write_ondemand_up_threshold(unsigned int up_threshold); > + > +int write_userspace_scaling_setspeed(unsigned int cpu, unsigned int freq); > + > +void cpufreq_dbs_timer_suspend(void); > +void cpufreq_dbs_timer_resume(void); > + > +#endif /* __XEN_CPUFREQ_PM_H__ */ > -- > 2.7.4 > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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