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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC PATCH 01/13] cpufreq: move cpufreq.h file to the xen/include/cpufreq location
On Tue, Oct 7, 2014 at 5:22 PM, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
>
> On 07/10/14 15:19, Oleksandr Dmytryshyn wrote:
> > Cpufreq driver should be more generalizable (not ACPI-specific).
> > Thus this file should be placed to the proper location.
> >
> > Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>
>
> In the future, please prepare patch series with the -M option which will
> detect the move of cpufreq.h as a rename, and vastly reduce the size of
> the patches.
I'll do this.
>
> ~Andrew
>
> > ---
> > 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 | 258
> > --------------------------
> > xen/include/cpufreq/cpufreq.h | 261
> > +++++++++++++++++++++++++++
> > 12 files changed, 272 insertions(+), 269 deletions(-)
> > delete mode 100644 xen/include/acpi/cpufreq/cpufreq.h
> > create mode 100644 xen/include/cpufreq/cpufreq.h
> >
> > diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
> > index 597befa..98726ad 100644
> > --- a/xen/arch/x86/acpi/cpu_idle.c
> > +++ b/xen/arch/x86/acpi/cpu_idle.c
> > @@ -51,7 +51,7 @@
> > #include <xen/softirq.h>
> > #include <public/platform.h>
> > #include <public/sysctl.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/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 4a6aeb3..4569d49 100644
> > --- a/xen/arch/x86/acpi/cpufreq/cpufreq.c
> > +++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c
> > @@ -42,7 +42,7 @@
> > #include <asm/percpu.h>
> > #include <asm/cpufeature.h>
> > #include <acpi/acpi.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/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 2c9fea2..0462e31 100644
> > --- a/xen/arch/x86/acpi/cpufreq/powernow.c
> > +++ b/xen/arch/x86/acpi/cpufreq/powernow.c
> > @@ -36,7 +36,7 @@
> > #include <asm/percpu.h>
> > #include <asm/cpufeature.h>
> > #include <acpi/acpi.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/cpufreq.h>
> >
> > #define CPUID_6_ECX_APERFMPERF_CAPABILITY (0x1)
> > #define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007
> > diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c
> > index f41f0de..d139e96 100644
> > --- a/xen/arch/x86/acpi/power.c
> > +++ b/xen/arch/x86/acpi/power.c
> > @@ -29,7 +29,7 @@
> > #include <asm/tboot.h>
> > #include <asm/apic.h>
> > #include <asm/io_apic.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/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 85179f2..a00c19a 100644
> > --- a/xen/arch/x86/cpu/mwait-idle.c
> > +++ b/xen/arch/x86/cpu/mwait-idle.c
> > @@ -59,7 +59,7 @@
> > #include <asm/hpet.h>
> > #include <asm/mwait.h>
> > #include <asm/msr.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/cpufreq.h>
> >
> > #define MWAIT_IDLE_VERSION "0.4"
> > #undef PREFIX
> > diff --git a/xen/drivers/acpi/pmstat.c b/xen/drivers/acpi/pmstat.c
> > index daac2da..bd6ca43 100644
> > --- a/xen/drivers/acpi/pmstat.c
> > +++ b/xen/drivers/acpi/pmstat.c
> > @@ -40,7 +40,7 @@
> > #include <xen/acpi.h>
> >
> > #include <public/sysctl.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/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 ab66884..884d2bb 100644
> > --- a/xen/drivers/cpufreq/cpufreq.c
> > +++ b/xen/drivers/cpufreq/cpufreq.c
> > @@ -44,7 +44,7 @@
> > #include <asm/processor.h>
> > #include <asm/percpu.h>
> > #include <acpi/acpi.h>
> > -#include <acpi/cpufreq/cpufreq.h>
> > +#include <cpufreq/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..881e4bb 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 <cpufreq/cpufreq.h>
> >
> > /*
> > * cpufreq userspace governor
> > diff --git a/xen/drivers/cpufreq/cpufreq_ondemand.c
> > b/xen/drivers/cpufreq/cpufreq_ondemand.c
> > index 7fdba03..f299116 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 <cpufreq/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 519f862..c9150a1 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 <cpufreq/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 f96c3e4..0000000
> > --- a/xen/include/acpi/cpufreq/cpufreq.h
> > +++ /dev/null
> > @@ -1,258 +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 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 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);
> > -
> > -void cpufreq_cmdline_parse(char *);
> > -
> > -#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 (*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;
> > -
> > -static __inline__
> > -int cpufreq_register_driver(struct cpufreq_driver *driver_data)
> > -{
> > - if (!driver_data ||
> > - !driver_data->init ||
> > - !driver_data->exit ||
> > - !driver_data->verify ||
> > - !driver_data->target)
> > - return -EINVAL;
> > -
> > - if (cpufreq_driver)
> > - return -EBUSY;
> > -
> > - cpufreq_driver = driver_data;
> > - return 0;
> > -}
> > -
> > -static __inline__
> > -int cpufreq_unregister_driver(struct cpufreq_driver *driver)
> > -{
> > - if (!cpufreq_driver || (driver != cpufreq_driver))
> > - return -EINVAL;
> > -
> > - cpufreq_driver = NULL;
> > - return 0;
> > -}
> > -
> > -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/cpufreq/cpufreq.h b/xen/include/cpufreq/cpufreq.h
> > new file mode 100644
> > index 0000000..04716f9
> > --- /dev/null
> > +++ b/xen/include/cpufreq/cpufreq.h
> > @@ -0,0 +1,261 @@
> > +/*
> > + * xen/include/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 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 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);
> > +
> > +void cpufreq_cmdline_parse(char *);
> > +
> > +#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 (*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;
> > +
> > +static __inline__
> > +int cpufreq_register_driver(struct cpufreq_driver *driver_data)
> > +{
> > + if (!driver_data ||
> > + !driver_data->init ||
> > + !driver_data->exit ||
> > + !driver_data->verify ||
> > + !driver_data->target)
> > + return -EINVAL;
> > +
> > + if (cpufreq_driver)
> > + return -EBUSY;
> > +
> > + cpufreq_driver = driver_data;
> > + return 0;
> > +}
> > +
> > +static __inline__
> > +int cpufreq_unregister_driver(struct cpufreq_driver *driver)
> > +{
> > + if (!cpufreq_driver || (driver != cpufreq_driver))
> > + return -EINVAL;
> > +
> > + cpufreq_driver = NULL;
> > + return 0;
> > +}
> > +
> > +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__ */
>
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