Merge back earlier 'pm-cpufreq' material
This commit is contained in:
commit
c49a089c3e
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@ -50,8 +50,6 @@ What shall this struct cpufreq_driver contain?
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cpufreq_driver.name - The name of this driver.
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cpufreq_driver.owner - THIS_MODULE;
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cpufreq_driver.init - A pointer to the per-CPU initialization
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function.
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@ -942,35 +942,6 @@ extern int set_tsc_mode(unsigned int val);
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extern u16 amd_get_nb_id(int cpu);
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struct aperfmperf {
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u64 aperf, mperf;
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};
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static inline void get_aperfmperf(struct aperfmperf *am)
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{
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WARN_ON_ONCE(!boot_cpu_has(X86_FEATURE_APERFMPERF));
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rdmsrl(MSR_IA32_APERF, am->aperf);
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rdmsrl(MSR_IA32_MPERF, am->mperf);
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}
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#define APERFMPERF_SHIFT 10
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static inline
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unsigned long calc_aperfmperf_ratio(struct aperfmperf *old,
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struct aperfmperf *new)
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{
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u64 aperf = new->aperf - old->aperf;
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u64 mperf = new->mperf - old->mperf;
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unsigned long ratio = aperf;
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mperf >>= APERFMPERF_SHIFT;
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if (mperf)
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ratio = div64_u64(aperf, mperf);
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return ratio;
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}
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extern unsigned long arch_align_stack(unsigned long sp);
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extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
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@ -23,7 +23,7 @@ obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o
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# powernow-k8 can load then. ACPI is preferred to all other hardware-specific drivers.
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# speedstep-* is preferred over p4-clockmod.
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obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o mperf.o
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obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o
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obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
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obj-$(CONFIG_X86_PCC_CPUFREQ) += pcc-cpufreq.o
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obj-$(CONFIG_X86_POWERNOW_K6) += powernow-k6.o
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@ -45,7 +45,6 @@
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#include <asm/msr.h>
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#include <asm/processor.h>
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#include <asm/cpufeature.h>
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#include "mperf.h"
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MODULE_AUTHOR("Paul Diefenbaugh, Dominik Brodowski");
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MODULE_DESCRIPTION("ACPI Processor P-States Driver");
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@ -710,7 +709,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
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return blacklisted;
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#endif
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data = kzalloc(sizeof(struct acpi_cpufreq_data), GFP_KERNEL);
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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@ -800,7 +799,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
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goto err_unreg;
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}
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data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) *
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data->freq_table = kmalloc(sizeof(*data->freq_table) *
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(perf->state_count+1), GFP_KERNEL);
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if (!data->freq_table) {
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result = -ENOMEM;
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@ -861,10 +860,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
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/* notify BIOS that we exist */
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acpi_processor_notify_smm(THIS_MODULE);
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/* Check for APERF/MPERF support in hardware */
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if (boot_cpu_has(X86_FEATURE_APERFMPERF))
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acpi_cpufreq_driver.getavg = cpufreq_get_measured_perf;
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pr_debug("CPU%u - ACPI performance management activated.\n", cpu);
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for (i = 0; i < perf->state_count; i++)
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pr_debug(" %cP%d: %d MHz, %d mW, %d uS\n",
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@ -941,7 +936,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
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.exit = acpi_cpufreq_cpu_exit,
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.resume = acpi_cpufreq_resume,
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.name = "acpi-cpufreq",
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.owner = THIS_MODULE,
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.attr = acpi_cpufreq_attr,
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};
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@ -108,7 +108,6 @@ static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy)
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static struct cpufreq_driver at32_driver = {
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.name = "at32ap",
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.owner = THIS_MODULE,
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.init = at32_cpufreq_driver_init,
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.verify = at32_verify_speed,
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.target = at32_set_target,
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@ -225,7 +225,6 @@ static struct cpufreq_driver bfin_driver = {
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.get = bfin_getfreq_khz,
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.init = __bfin_cpu_init,
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.name = "bfin cpufreq",
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.owner = THIS_MODULE,
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.attr = bfin_freq_attr,
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};
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@ -379,7 +379,6 @@ static struct cpufreq_driver nforce2_driver = {
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.get = nforce2_get,
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.init = nforce2_cpu_init,
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.exit = nforce2_cpu_exit,
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.owner = THIS_MODULE,
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};
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#ifdef MODULE
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File diff suppressed because it is too large
Load diff
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@ -11,19 +11,7 @@
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* published by the Free Software Foundation.
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*/
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#include <linux/cpufreq.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kernel_stat.h>
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#include <linux/kobject.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/notifier.h>
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#include <linux/percpu-defs.h>
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#include <linux/slab.h>
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#include <linux/sysfs.h>
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#include <linux/types.h>
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#include "cpufreq_governor.h"
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/* Conservative governor macros */
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@ -329,7 +317,7 @@ static int cs_init(struct dbs_data *dbs_data)
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{
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struct cs_dbs_tuners *tuners;
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tuners = kzalloc(sizeof(struct cs_dbs_tuners), GFP_KERNEL);
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tuners = kzalloc(sizeof(*tuners), GFP_KERNEL);
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if (!tuners) {
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pr_err("%s: kzalloc failed\n", __func__);
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return -ENOMEM;
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@ -16,15 +16,9 @@
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <asm/cputime.h>
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#include <linux/cpufreq.h>
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#include <linux/cpumask.h>
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#include <linux/export.h>
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#include <linux/kernel_stat.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include "cpufreq_governor.h"
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@ -53,7 +47,7 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
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policy = cdbs->cur_policy;
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/* Get Absolute Load (in terms of freq for ondemand gov) */
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/* Get Absolute Load */
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for_each_cpu(j, policy->cpus) {
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struct cpu_dbs_common_info *j_cdbs;
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u64 cur_wall_time, cur_idle_time;
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@ -104,14 +98,6 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
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load = 100 * (wall_time - idle_time) / wall_time;
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if (dbs_data->cdata->governor == GOV_ONDEMAND) {
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int freq_avg = __cpufreq_driver_getavg(policy, j);
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if (freq_avg <= 0)
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freq_avg = policy->cur;
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load *= freq_avg;
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}
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if (load > max_load)
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max_load = load;
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}
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@ -18,10 +18,9 @@
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#define _CPUFREQ_GOVERNOR_H
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#include <linux/cpufreq.h>
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#include <linux/kobject.h>
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#include <linux/kernel_stat.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/workqueue.h>
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#include <linux/sysfs.h>
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/*
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* The polling frequency depends on the capability of the processor. Default
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@ -169,7 +168,6 @@ struct od_dbs_tuners {
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unsigned int sampling_rate;
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unsigned int sampling_down_factor;
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unsigned int up_threshold;
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unsigned int adj_up_threshold;
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unsigned int powersave_bias;
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unsigned int io_is_busy;
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};
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@ -223,7 +221,7 @@ struct od_ops {
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void (*powersave_bias_init_cpu)(int cpu);
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unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
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unsigned int freq_next, unsigned int relation);
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void (*freq_increase)(struct cpufreq_policy *p, unsigned int freq);
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void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq);
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};
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struct cs_ops {
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@ -12,28 +12,16 @@
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/cpufreq.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kernel_stat.h>
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#include <linux/kobject.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/cpu.h>
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#include <linux/percpu-defs.h>
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#include <linux/slab.h>
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#include <linux/sysfs.h>
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#include <linux/tick.h>
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#include <linux/types.h>
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#include <linux/cpu.h>
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#include "cpufreq_governor.h"
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/* On-demand governor macros */
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#define DEF_FREQUENCY_DOWN_DIFFERENTIAL (10)
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#define DEF_FREQUENCY_UP_THRESHOLD (80)
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#define DEF_SAMPLING_DOWN_FACTOR (1)
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#define MAX_SAMPLING_DOWN_FACTOR (100000)
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#define MICRO_FREQUENCY_DOWN_DIFFERENTIAL (3)
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#define MICRO_FREQUENCY_UP_THRESHOLD (95)
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#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
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#define MIN_FREQUENCY_UP_THRESHOLD (11)
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@ -144,31 +132,27 @@ static void ondemand_powersave_bias_init(void)
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}
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}
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static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
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static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int freq)
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{
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struct dbs_data *dbs_data = p->governor_data;
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struct dbs_data *dbs_data = policy->governor_data;
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struct od_dbs_tuners *od_tuners = dbs_data->tuners;
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if (od_tuners->powersave_bias)
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freq = od_ops.powersave_bias_target(p, freq,
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freq = od_ops.powersave_bias_target(policy, freq,
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CPUFREQ_RELATION_H);
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else if (p->cur == p->max)
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else if (policy->cur == policy->max)
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return;
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__cpufreq_driver_target(p, freq, od_tuners->powersave_bias ?
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__cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ?
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CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
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}
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/*
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* Every sampling_rate, we check, if current idle time is less than 20%
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* (default), then we try to increase frequency. Every sampling_rate, we look
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* for the lowest frequency which can sustain the load while keeping idle time
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* over 30%. If such a frequency exist, we try to decrease to this frequency.
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*
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* Any frequency increase takes it to the maximum frequency. Frequency reduction
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* happens at minimum steps of 5% (default) of current frequency
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* (default), then we try to increase frequency. Else, we adjust the frequency
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* proportional to load.
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*/
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static void od_check_cpu(int cpu, unsigned int load_freq)
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static void od_check_cpu(int cpu, unsigned int load)
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{
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struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
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struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
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@ -178,29 +162,17 @@ static void od_check_cpu(int cpu, unsigned int load_freq)
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dbs_info->freq_lo = 0;
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/* Check for frequency increase */
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if (load_freq > od_tuners->up_threshold * policy->cur) {
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if (load > od_tuners->up_threshold) {
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/* If switching to max speed, apply sampling_down_factor */
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if (policy->cur < policy->max)
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dbs_info->rate_mult =
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od_tuners->sampling_down_factor;
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dbs_freq_increase(policy, policy->max);
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return;
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}
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/* Check for frequency decrease */
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/* if we cannot reduce the frequency anymore, break out early */
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if (policy->cur == policy->min)
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return;
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/*
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* The optimal frequency is the frequency that is the lowest that can
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* support the current CPU usage without triggering the up policy. To be
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* safe, we focus 10 points under the threshold.
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*/
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if (load_freq < od_tuners->adj_up_threshold
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* policy->cur) {
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} else {
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/* Calculate the next frequency proportional to load */
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unsigned int freq_next;
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freq_next = load_freq / od_tuners->adj_up_threshold;
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freq_next = load * policy->cpuinfo.max_freq / 100;
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/* No longer fully busy, reset rate_mult */
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dbs_info->rate_mult = 1;
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|
@ -374,9 +346,6 @@ static ssize_t store_up_threshold(struct dbs_data *dbs_data, const char *buf,
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input < MIN_FREQUENCY_UP_THRESHOLD) {
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return -EINVAL;
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}
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/* Calculate the new adj_up_threshold */
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od_tuners->adj_up_threshold += input;
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od_tuners->adj_up_threshold -= od_tuners->up_threshold;
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od_tuners->up_threshold = input;
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return count;
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|
@ -513,7 +482,7 @@ static int od_init(struct dbs_data *dbs_data)
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u64 idle_time;
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int cpu;
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tuners = kzalloc(sizeof(struct od_dbs_tuners), GFP_KERNEL);
|
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tuners = kzalloc(sizeof(*tuners), GFP_KERNEL);
|
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if (!tuners) {
|
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pr_err("%s: kzalloc failed\n", __func__);
|
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return -ENOMEM;
|
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|
@ -525,8 +494,6 @@ static int od_init(struct dbs_data *dbs_data)
|
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if (idle_time != -1ULL) {
|
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/* Idle micro accounting is supported. Use finer thresholds */
|
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tuners->up_threshold = MICRO_FREQUENCY_UP_THRESHOLD;
|
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tuners->adj_up_threshold = MICRO_FREQUENCY_UP_THRESHOLD -
|
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MICRO_FREQUENCY_DOWN_DIFFERENTIAL;
|
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/*
|
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* In nohz/micro accounting case we set the minimum frequency
|
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* not depending on HZ, but fixed (very low). The deferred
|
||||
|
@ -535,8 +502,6 @@ static int od_init(struct dbs_data *dbs_data)
|
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dbs_data->min_sampling_rate = MICRO_FREQUENCY_MIN_SAMPLE_RATE;
|
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} else {
|
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tuners->up_threshold = DEF_FREQUENCY_UP_THRESHOLD;
|
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tuners->adj_up_threshold = DEF_FREQUENCY_UP_THRESHOLD -
|
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DEF_FREQUENCY_DOWN_DIFFERENTIAL;
|
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|
||||
/* For correct statistics, we need 10 ticks for each measure */
|
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dbs_data->min_sampling_rate = MIN_SAMPLING_RATE_RATIO *
|
||||
|
|
|
@ -12,10 +12,9 @@
|
|||
|
||||
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
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|
||||
#include <linux/kernel.h>
|
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#include <linux/module.h>
|
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#include <linux/cpufreq.h>
|
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#include <linux/init.h>
|
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#include <linux/module.h>
|
||||
|
||||
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
|
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unsigned int event)
|
||||
|
|
|
@ -12,10 +12,9 @@
|
|||
|
||||
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
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|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/cpufreq.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
|
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unsigned int event)
|
||||
|
|
|
@ -9,17 +9,10 @@
|
|||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/sysfs.h>
|
||||
#include <linux/cpufreq.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/jiffies.h>
|
||||
#include <linux/percpu.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/slab.h>
|
||||
#include <asm/cputime.h>
|
||||
|
||||
static spinlock_t cpufreq_stats_lock;
|
||||
|
@ -200,22 +193,22 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
|
|||
{
|
||||
unsigned int i, j, count = 0, ret = 0;
|
||||
struct cpufreq_stats *stat;
|
||||
struct cpufreq_policy *data;
|
||||
struct cpufreq_policy *current_policy;
|
||||
unsigned int alloc_size;
|
||||
unsigned int cpu = policy->cpu;
|
||||
if (per_cpu(cpufreq_stats_table, cpu))
|
||||
return -EBUSY;
|
||||
stat = kzalloc(sizeof(struct cpufreq_stats), GFP_KERNEL);
|
||||
stat = kzalloc(sizeof(*stat), GFP_KERNEL);
|
||||
if ((stat) == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
data = cpufreq_cpu_get(cpu);
|
||||
if (data == NULL) {
|
||||
current_policy = cpufreq_cpu_get(cpu);
|
||||
if (current_policy == NULL) {
|
||||
ret = -EINVAL;
|
||||
goto error_get_fail;
|
||||
}
|
||||
|
||||
ret = sysfs_create_group(&data->kobj, &stats_attr_group);
|
||||
ret = sysfs_create_group(¤t_policy->kobj, &stats_attr_group);
|
||||
if (ret)
|
||||
goto error_out;
|
||||
|
||||
|
@ -258,10 +251,10 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
|
|||
stat->last_time = get_jiffies_64();
|
||||
stat->last_index = freq_table_get_index(stat, policy->cur);
|
||||
spin_unlock(&cpufreq_stats_lock);
|
||||
cpufreq_cpu_put(data);
|
||||
cpufreq_cpu_put(current_policy);
|
||||
return 0;
|
||||
error_out:
|
||||
cpufreq_cpu_put(data);
|
||||
cpufreq_cpu_put(current_policy);
|
||||
error_get_fail:
|
||||
kfree(stat);
|
||||
per_cpu(cpufreq_stats_table, cpu) = NULL;
|
||||
|
@ -348,16 +341,10 @@ static int cpufreq_stat_cpu_callback(struct notifier_block *nfb,
|
|||
unsigned int cpu = (unsigned long)hcpu;
|
||||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
cpufreq_update_policy(cpu);
|
||||
break;
|
||||
case CPU_DOWN_PREPARE:
|
||||
case CPU_DOWN_PREPARE_FROZEN:
|
||||
cpufreq_stats_free_sysfs(cpu);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
cpufreq_stats_free_table(cpu);
|
||||
break;
|
||||
}
|
||||
|
@ -390,8 +377,6 @@ static int __init cpufreq_stats_init(void)
|
|||
return ret;
|
||||
|
||||
register_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
|
||||
for_each_online_cpu(cpu)
|
||||
cpufreq_update_policy(cpu);
|
||||
|
||||
ret = cpufreq_register_notifier(¬ifier_trans_block,
|
||||
CPUFREQ_TRANSITION_NOTIFIER);
|
||||
|
|
|
@ -111,7 +111,6 @@ static struct cpufreq_driver cris_freq_driver = {
|
|||
.init = cris_freq_cpu_init,
|
||||
.exit = cris_freq_cpu_exit,
|
||||
.name = "cris_freq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = cris_freq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -108,7 +108,6 @@ static struct cpufreq_driver cris_freq_driver = {
|
|||
.init = cris_freq_cpu_init,
|
||||
.exit = cris_freq_cpu_exit,
|
||||
.name = "cris_freq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = cris_freq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -54,7 +54,7 @@ static struct acpi_processor_performance *eps_acpi_cpu_perf;
|
|||
/* Minimum necessary to get acpi_processor_get_bios_limit() working */
|
||||
static int eps_acpi_init(void)
|
||||
{
|
||||
eps_acpi_cpu_perf = kzalloc(sizeof(struct acpi_processor_performance),
|
||||
eps_acpi_cpu_perf = kzalloc(sizeof(*eps_acpi_cpu_perf),
|
||||
GFP_KERNEL);
|
||||
if (!eps_acpi_cpu_perf)
|
||||
return -ENOMEM;
|
||||
|
@ -366,7 +366,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
|
|||
states = 2;
|
||||
|
||||
/* Allocate private data and frequency table for current cpu */
|
||||
centaur = kzalloc(sizeof(struct eps_cpu_data)
|
||||
centaur = kzalloc(sizeof(*centaur)
|
||||
+ (states + 1) * sizeof(struct cpufreq_frequency_table),
|
||||
GFP_KERNEL);
|
||||
if (!centaur)
|
||||
|
@ -436,7 +436,6 @@ static struct cpufreq_driver eps_driver = {
|
|||
.exit = eps_cpu_exit,
|
||||
.get = eps_get,
|
||||
.name = "e_powersaver",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = eps_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -274,7 +274,6 @@ static struct cpufreq_driver elanfreq_driver = {
|
|||
.init = elanfreq_cpu_init,
|
||||
.exit = elanfreq_cpu_exit,
|
||||
.name = "elanfreq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = elanfreq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -289,7 +289,7 @@ static int __init exynos_cpufreq_init(void)
|
|||
{
|
||||
int ret = -EINVAL;
|
||||
|
||||
exynos_info = kzalloc(sizeof(struct exynos_dvfs_info), GFP_KERNEL);
|
||||
exynos_info = kzalloc(sizeof(*exynos_info), GFP_KERNEL);
|
||||
if (!exynos_info)
|
||||
return -ENOMEM;
|
||||
|
||||
|
|
|
@ -11,10 +11,8 @@
|
|||
|
||||
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/cpufreq.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
/*********************************************************************
|
||||
* FREQUENCY TABLE HELPERS *
|
||||
|
|
|
@ -446,7 +446,6 @@ static struct cpufreq_driver gx_suspmod_driver = {
|
|||
.target = cpufreq_gx_target,
|
||||
.init = cpufreq_gx_cpu_init,
|
||||
.name = "gx-suspmod",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __init cpufreq_gx_init(void)
|
||||
|
@ -466,7 +465,7 @@ static int __init cpufreq_gx_init(void)
|
|||
|
||||
pr_debug("geode suspend modulation available.\n");
|
||||
|
||||
params = kzalloc(sizeof(struct gxfreq_params), GFP_KERNEL);
|
||||
params = kzalloc(sizeof(*params), GFP_KERNEL);
|
||||
if (params == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
|
|
|
@ -274,7 +274,7 @@ acpi_cpufreq_cpu_init (
|
|||
|
||||
pr_debug("acpi_cpufreq_cpu_init\n");
|
||||
|
||||
data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
|
||||
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
||||
if (!data)
|
||||
return (-ENOMEM);
|
||||
|
||||
|
@ -304,7 +304,7 @@ acpi_cpufreq_cpu_init (
|
|||
}
|
||||
|
||||
/* alloc freq_table */
|
||||
data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) *
|
||||
data->freq_table = kmalloc(sizeof(*data->freq_table) *
|
||||
(data->acpi_data.state_count + 1),
|
||||
GFP_KERNEL);
|
||||
if (!data->freq_table) {
|
||||
|
@ -409,7 +409,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
|
|||
.init = acpi_cpufreq_cpu_init,
|
||||
.exit = acpi_cpufreq_cpu_exit,
|
||||
.name = "acpi-cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = acpi_cpufreq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -665,7 +665,6 @@ static struct cpufreq_driver intel_pstate_driver = {
|
|||
.init = intel_pstate_cpu_init,
|
||||
.exit = intel_pstate_cpu_exit,
|
||||
.name = "intel_pstate",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __initdata no_load;
|
||||
|
|
|
@ -158,7 +158,6 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = {
|
|||
.init = kirkwood_cpufreq_cpu_init,
|
||||
.exit = kirkwood_cpufreq_cpu_exit,
|
||||
.name = "kirkwood-cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = kirkwood_cpufreq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -948,7 +948,6 @@ static struct cpufreq_driver longhaul_driver = {
|
|||
.init = longhaul_cpu_init,
|
||||
.exit = longhaul_cpu_exit,
|
||||
.name = "longhaul",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = longhaul_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -286,7 +286,6 @@ static struct cpufreq_driver longrun_driver = {
|
|||
.get = longrun_get,
|
||||
.init = longrun_cpu_init,
|
||||
.name = "longrun",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static const struct x86_cpu_id longrun_ids[] = {
|
||||
|
|
|
@ -158,7 +158,6 @@ static struct freq_attr *loongson2_table_attr[] = {
|
|||
};
|
||||
|
||||
static struct cpufreq_driver loongson2_cpufreq_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "loongson2",
|
||||
.init = loongson2_cpufreq_cpu_init,
|
||||
.verify = loongson2_cpufreq_verify,
|
||||
|
|
|
@ -190,7 +190,6 @@ static int maple_cpufreq_cpu_init(struct cpufreq_policy *policy)
|
|||
|
||||
static struct cpufreq_driver maple_cpufreq_driver = {
|
||||
.name = "maple",
|
||||
.owner = THIS_MODULE,
|
||||
.flags = CPUFREQ_CONST_LOOPS,
|
||||
.init = maple_cpufreq_cpu_init,
|
||||
.verify = maple_cpufreq_verify,
|
||||
|
|
|
@ -1,51 +0,0 @@
|
|||
#include <linux/kernel.h>
|
||||
#include <linux/smp.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/cpufreq.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#include "mperf.h"
|
||||
|
||||
static DEFINE_PER_CPU(struct aperfmperf, acfreq_old_perf);
|
||||
|
||||
/* Called via smp_call_function_single(), on the target CPU */
|
||||
static void read_measured_perf_ctrs(void *_cur)
|
||||
{
|
||||
struct aperfmperf *am = _cur;
|
||||
|
||||
get_aperfmperf(am);
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the measured active (C0) frequency on this CPU since last call
|
||||
* to this function.
|
||||
* Input: cpu number
|
||||
* Return: Average CPU frequency in terms of max frequency (zero on error)
|
||||
*
|
||||
* We use IA32_MPERF and IA32_APERF MSRs to get the measured performance
|
||||
* over a period of time, while CPU is in C0 state.
|
||||
* IA32_MPERF counts at the rate of max advertised frequency
|
||||
* IA32_APERF counts at the rate of actual CPU frequency
|
||||
* Only IA32_APERF/IA32_MPERF ratio is architecturally defined and
|
||||
* no meaning should be associated with absolute values of these MSRs.
|
||||
*/
|
||||
unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
|
||||
unsigned int cpu)
|
||||
{
|
||||
struct aperfmperf perf;
|
||||
unsigned long ratio;
|
||||
unsigned int retval;
|
||||
|
||||
if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
|
||||
return 0;
|
||||
|
||||
ratio = calc_aperfmperf_ratio(&per_cpu(acfreq_old_perf, cpu), &perf);
|
||||
per_cpu(acfreq_old_perf, cpu) = perf;
|
||||
|
||||
retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
|
||||
|
||||
return retval;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(cpufreq_get_measured_perf);
|
||||
MODULE_LICENSE("GPL");
|
|
@ -1,9 +0,0 @@
|
|||
/*
|
||||
* (c) 2010 Advanced Micro Devices, Inc.
|
||||
* Your use of this code is subject to the terms and conditions of the
|
||||
* GNU general public license version 2. See "COPYING" or
|
||||
* http://www.gnu.org/licenses/gpl.html
|
||||
*/
|
||||
|
||||
unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
|
||||
unsigned int cpu);
|
|
@ -279,7 +279,6 @@ static struct cpufreq_driver p4clockmod_driver = {
|
|||
.exit = cpufreq_p4_cpu_exit,
|
||||
.get = cpufreq_p4_get,
|
||||
.name = "p4-clockmod",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = p4clockmod_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -297,7 +297,6 @@ static int pas_cpufreq_target(struct cpufreq_policy *policy,
|
|||
|
||||
static struct cpufreq_driver pas_cpufreq_driver = {
|
||||
.name = "pas-cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
.flags = CPUFREQ_CONST_LOOPS,
|
||||
.init = pas_cpufreq_cpu_init,
|
||||
.exit = pas_cpufreq_cpu_exit,
|
||||
|
|
|
@ -587,7 +587,6 @@ static struct cpufreq_driver pcc_cpufreq_driver = {
|
|||
.init = pcc_cpufreq_cpu_init,
|
||||
.exit = pcc_cpufreq_cpu_exit,
|
||||
.name = "pcc-cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __init pcc_cpufreq_init(void)
|
||||
|
|
|
@ -477,7 +477,6 @@ static struct cpufreq_driver pmac_cpufreq_driver = {
|
|||
.flags = CPUFREQ_PM_NO_WARN,
|
||||
.attr = pmac_cpu_freqs_attr,
|
||||
.name = "powermac",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
||||
|
|
|
@ -371,7 +371,6 @@ static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
|
|||
|
||||
static struct cpufreq_driver g5_cpufreq_driver = {
|
||||
.name = "powermac",
|
||||
.owner = THIS_MODULE,
|
||||
.flags = CPUFREQ_CONST_LOOPS,
|
||||
.init = g5_cpufreq_cpu_init,
|
||||
.verify = g5_cpufreq_verify,
|
||||
|
@ -447,9 +446,8 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
|
|||
if (!shdr)
|
||||
goto bail_noprops;
|
||||
g5_fvt_table = (struct smu_sdbp_fvt *)&shdr[1];
|
||||
ssize = (shdr->len * sizeof(u32)) -
|
||||
sizeof(struct smu_sdbp_header);
|
||||
g5_fvt_count = ssize / sizeof(struct smu_sdbp_fvt);
|
||||
ssize = (shdr->len * sizeof(u32)) - sizeof(*shdr);
|
||||
g5_fvt_count = ssize / sizeof(*g5_fvt_table);
|
||||
g5_fvt_cur = 0;
|
||||
|
||||
/* Sanity checking */
|
||||
|
|
|
@ -207,7 +207,6 @@ static struct cpufreq_driver powernow_k6_driver = {
|
|||
.exit = powernow_k6_cpu_exit,
|
||||
.get = powernow_k6_get,
|
||||
.name = "powernow-k6",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = powernow_k6_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -177,7 +177,7 @@ static int get_ranges(unsigned char *pst)
|
|||
unsigned int speed;
|
||||
u8 fid, vid;
|
||||
|
||||
powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
|
||||
powernow_table = kzalloc((sizeof(*powernow_table) *
|
||||
(number_scales + 1)), GFP_KERNEL);
|
||||
if (!powernow_table)
|
||||
return -ENOMEM;
|
||||
|
@ -309,8 +309,7 @@ static int powernow_acpi_init(void)
|
|||
goto err0;
|
||||
}
|
||||
|
||||
acpi_processor_perf = kzalloc(sizeof(struct acpi_processor_performance),
|
||||
GFP_KERNEL);
|
||||
acpi_processor_perf = kzalloc(sizeof(*acpi_processor_perf), GFP_KERNEL);
|
||||
if (!acpi_processor_perf) {
|
||||
retval = -ENOMEM;
|
||||
goto err0;
|
||||
|
@ -346,7 +345,7 @@ static int powernow_acpi_init(void)
|
|||
goto err2;
|
||||
}
|
||||
|
||||
powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
|
||||
powernow_table = kzalloc((sizeof(*powernow_table) *
|
||||
(number_scales + 1)), GFP_KERNEL);
|
||||
if (!powernow_table) {
|
||||
retval = -ENOMEM;
|
||||
|
@ -497,7 +496,7 @@ static int powernow_decode_bios(int maxfid, int startvid)
|
|||
"relevant to this CPU).\n",
|
||||
psb->numpst);
|
||||
|
||||
p += sizeof(struct psb_s);
|
||||
p += sizeof(*psb);
|
||||
|
||||
pst = (struct pst_s *) p;
|
||||
|
||||
|
@ -510,12 +509,12 @@ static int powernow_decode_bios(int maxfid, int startvid)
|
|||
(maxfid == pst->maxfid) &&
|
||||
(startvid == pst->startvid)) {
|
||||
print_pst_entry(pst, j);
|
||||
p = (char *)pst + sizeof(struct pst_s);
|
||||
p = (char *)pst + sizeof(*pst);
|
||||
ret = get_ranges(p);
|
||||
return ret;
|
||||
} else {
|
||||
unsigned int k;
|
||||
p = (char *)pst + sizeof(struct pst_s);
|
||||
p = (char *)pst + sizeof(*pst);
|
||||
for (k = 0; k < number_scales; k++)
|
||||
p += 2;
|
||||
}
|
||||
|
@ -717,7 +716,6 @@ static struct cpufreq_driver powernow_driver = {
|
|||
.init = powernow_cpu_init,
|
||||
.exit = powernow_cpu_exit,
|
||||
.name = "powernow-k7",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = powernow_table_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -623,7 +623,7 @@ static int fill_powernow_table(struct powernow_k8_data *data,
|
|||
if (check_pst_table(data, pst, maxvid))
|
||||
return -EINVAL;
|
||||
|
||||
powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table)
|
||||
powernow_table = kmalloc((sizeof(*powernow_table)
|
||||
* (data->numps + 1)), GFP_KERNEL);
|
||||
if (!powernow_table) {
|
||||
printk(KERN_ERR PFX "powernow_table memory alloc failure\n");
|
||||
|
@ -793,7 +793,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
|
|||
}
|
||||
|
||||
/* fill in data->powernow_table */
|
||||
powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table)
|
||||
powernow_table = kmalloc((sizeof(*powernow_table)
|
||||
* (data->acpi_data.state_count + 1)), GFP_KERNEL);
|
||||
if (!powernow_table) {
|
||||
pr_debug("powernow_table memory alloc failure\n");
|
||||
|
@ -1106,7 +1106,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
|
|||
if (rc)
|
||||
return -ENODEV;
|
||||
|
||||
data = kzalloc(sizeof(struct powernow_k8_data), GFP_KERNEL);
|
||||
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
||||
if (!data) {
|
||||
printk(KERN_ERR PFX "unable to alloc powernow_k8_data");
|
||||
return -ENOMEM;
|
||||
|
@ -1240,7 +1240,6 @@ static struct cpufreq_driver cpufreq_amd64_driver = {
|
|||
.exit = powernowk8_cpu_exit,
|
||||
.get = powernowk8_get,
|
||||
.name = "powernow-k8",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = powernow_k8_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -300,7 +300,6 @@ static struct freq_attr *corenet_cpufreq_attr[] = {
|
|||
|
||||
static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
|
||||
.name = "ppc_cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
.flags = CPUFREQ_CONST_LOOPS,
|
||||
.init = corenet_cpufreq_cpu_init,
|
||||
.exit = __exit_p(corenet_cpufreq_cpu_exit),
|
||||
|
|
|
@ -181,7 +181,6 @@ static struct cpufreq_driver cbe_cpufreq_driver = {
|
|||
.init = cbe_cpufreq_cpu_init,
|
||||
.exit = cbe_cpufreq_cpu_exit,
|
||||
.name = "cbe-cpufreq",
|
||||
.owner = THIS_MODULE,
|
||||
.flags = CPUFREQ_CONST_LOOPS,
|
||||
};
|
||||
|
||||
|
|
|
@ -524,7 +524,6 @@ static struct freq_attr *s3c2416_cpufreq_attr[] = {
|
|||
};
|
||||
|
||||
static struct cpufreq_driver s3c2416_cpufreq_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.flags = 0,
|
||||
.verify = s3c2416_cpufreq_verify_speed,
|
||||
.target = s3c2416_cpufreq_set_target,
|
||||
|
|
|
@ -522,7 +522,7 @@ int __init s3c_cpufreq_setboard(struct s3c_cpufreq_board *board)
|
|||
/* Copy the board information so that each board can make this
|
||||
* initdata. */
|
||||
|
||||
ours = kzalloc(sizeof(struct s3c_cpufreq_board), GFP_KERNEL);
|
||||
ours = kzalloc(sizeof(*ours), GFP_KERNEL);
|
||||
if (ours == NULL) {
|
||||
printk(KERN_ERR "%s: no memory\n", __func__);
|
||||
return -ENOMEM;
|
||||
|
@ -615,7 +615,7 @@ static int s3c_cpufreq_build_freq(void)
|
|||
size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
|
||||
size++;
|
||||
|
||||
ftab = kmalloc(sizeof(struct cpufreq_frequency_table) * size, GFP_KERNEL);
|
||||
ftab = kmalloc(sizeof(*ftab) * size, GFP_KERNEL);
|
||||
if (!ftab) {
|
||||
printk(KERN_ERR "%s: no memory for tables\n", __func__);
|
||||
return -ENOMEM;
|
||||
|
@ -691,7 +691,7 @@ int __init s3c_plltab_register(struct cpufreq_frequency_table *plls,
|
|||
struct cpufreq_frequency_table *vals;
|
||||
unsigned int size;
|
||||
|
||||
size = sizeof(struct cpufreq_frequency_table) * (plls_no + 1);
|
||||
size = sizeof(*vals) * (plls_no + 1);
|
||||
|
||||
vals = kmalloc(size, GFP_KERNEL);
|
||||
if (vals) {
|
||||
|
|
|
@ -263,7 +263,6 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
|
|||
}
|
||||
|
||||
static struct cpufreq_driver s3c64xx_cpufreq_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.flags = 0,
|
||||
.verify = s3c64xx_cpufreq_verify_speed,
|
||||
.target = s3c64xx_cpufreq_set_target,
|
||||
|
|
|
@ -147,7 +147,6 @@ static struct cpufreq_driver sc520_freq_driver = {
|
|||
.init = sc520_freq_cpu_init,
|
||||
.exit = sc520_freq_cpu_exit,
|
||||
.name = "sc520_freq",
|
||||
.owner = THIS_MODULE,
|
||||
.attr = sc520_freq_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -160,7 +160,6 @@ static struct freq_attr *sh_freq_attr[] = {
|
|||
};
|
||||
|
||||
static struct cpufreq_driver sh_cpufreq_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "sh",
|
||||
.get = sh_cpufreq_get,
|
||||
.target = sh_cpufreq_target,
|
||||
|
|
|
@ -351,12 +351,11 @@ static int __init us2e_freq_init(void)
|
|||
struct cpufreq_driver *driver;
|
||||
|
||||
ret = -ENOMEM;
|
||||
driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
|
||||
driver = kzalloc(sizeof(*driver), GFP_KERNEL);
|
||||
if (!driver)
|
||||
goto err_out;
|
||||
|
||||
us2e_freq_table = kzalloc(
|
||||
(NR_CPUS * sizeof(struct us2e_freq_percpu_info)),
|
||||
us2e_freq_table = kzalloc((NR_CPUS * sizeof(*us2e_freq_table)),
|
||||
GFP_KERNEL);
|
||||
if (!us2e_freq_table)
|
||||
goto err_out;
|
||||
|
@ -366,7 +365,6 @@ static int __init us2e_freq_init(void)
|
|||
driver->target = us2e_freq_target;
|
||||
driver->get = us2e_freq_get;
|
||||
driver->exit = us2e_freq_cpu_exit;
|
||||
driver->owner = THIS_MODULE,
|
||||
strcpy(driver->name, "UltraSPARC-IIe");
|
||||
|
||||
cpufreq_us2e_driver = driver;
|
||||
|
|
|
@ -212,12 +212,11 @@ static int __init us3_freq_init(void)
|
|||
struct cpufreq_driver *driver;
|
||||
|
||||
ret = -ENOMEM;
|
||||
driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
|
||||
driver = kzalloc(sizeof(*driver), GFP_KERNEL);
|
||||
if (!driver)
|
||||
goto err_out;
|
||||
|
||||
us3_freq_table = kzalloc(
|
||||
(NR_CPUS * sizeof(struct us3_freq_percpu_info)),
|
||||
us3_freq_table = kzalloc((NR_CPUS * sizeof(*us3_freq_table)),
|
||||
GFP_KERNEL);
|
||||
if (!us3_freq_table)
|
||||
goto err_out;
|
||||
|
@ -227,7 +226,6 @@ static int __init us3_freq_init(void)
|
|||
driver->target = us3_freq_target;
|
||||
driver->get = us3_freq_get;
|
||||
driver->exit = us3_freq_cpu_exit;
|
||||
driver->owner = THIS_MODULE,
|
||||
strcpy(driver->name, "UltraSPARC-III");
|
||||
|
||||
cpufreq_us3_driver = driver;
|
||||
|
|
|
@ -575,7 +575,6 @@ static struct cpufreq_driver centrino_driver = {
|
|||
.target = centrino_target,
|
||||
.get = get_cur_freq,
|
||||
.attr = centrino_attr,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
|
@ -378,7 +378,6 @@ static struct cpufreq_driver speedstep_driver = {
|
|||
.init = speedstep_cpu_init,
|
||||
.exit = speedstep_cpu_exit,
|
||||
.get = speedstep_get,
|
||||
.owner = THIS_MODULE,
|
||||
.attr = speedstep_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -375,7 +375,6 @@ static struct cpufreq_driver speedstep_driver = {
|
|||
.exit = speedstep_cpu_exit,
|
||||
.get = speedstep_get,
|
||||
.resume = speedstep_resume,
|
||||
.owner = THIS_MODULE,
|
||||
.attr = speedstep_attr,
|
||||
};
|
||||
|
||||
|
|
|
@ -11,71 +11,36 @@
|
|||
#ifndef _LINUX_CPUFREQ_H
|
||||
#define _LINUX_CPUFREQ_H
|
||||
|
||||
#include <asm/cputime.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/threads.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/sysfs.h>
|
||||
#include <linux/completion.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/cpumask.h>
|
||||
#include <asm/div64.h>
|
||||
|
||||
#define CPUFREQ_NAME_LEN 16
|
||||
/* Print length for names. Extra 1 space for accomodating '\n' in prints */
|
||||
#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
|
||||
#include <linux/completion.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ NOTIFIER INTERFACE *
|
||||
* CPUFREQ INTERFACE *
|
||||
*********************************************************************/
|
||||
|
||||
#define CPUFREQ_TRANSITION_NOTIFIER (0)
|
||||
#define CPUFREQ_POLICY_NOTIFIER (1)
|
||||
|
||||
#ifdef CONFIG_CPU_FREQ
|
||||
int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
|
||||
int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
|
||||
extern void disable_cpufreq(void);
|
||||
#else /* CONFIG_CPU_FREQ */
|
||||
static inline int cpufreq_register_notifier(struct notifier_block *nb,
|
||||
unsigned int list)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline int cpufreq_unregister_notifier(struct notifier_block *nb,
|
||||
unsigned int list)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline void disable_cpufreq(void) { }
|
||||
#endif /* CONFIG_CPU_FREQ */
|
||||
|
||||
/* if (cpufreq_driver->target) exists, the ->governor decides what frequency
|
||||
* within the limits is used. If (cpufreq_driver->setpolicy> exists, these
|
||||
* two generic policies are available:
|
||||
*/
|
||||
|
||||
#define CPUFREQ_POLICY_POWERSAVE (1)
|
||||
#define CPUFREQ_POLICY_PERFORMANCE (2)
|
||||
|
||||
/* Frequency values here are CPU kHz so that hardware which doesn't run
|
||||
* with some frequencies can complain without having to guess what per
|
||||
* cent / per mille means.
|
||||
/*
|
||||
* Frequency values here are CPU kHz
|
||||
*
|
||||
* Maximum transition latency is in nanoseconds - if it's unknown,
|
||||
* CPUFREQ_ETERNAL shall be used.
|
||||
*/
|
||||
|
||||
#define CPUFREQ_ETERNAL (-1)
|
||||
#define CPUFREQ_NAME_LEN 16
|
||||
/* Print length for names. Extra 1 space for accomodating '\n' in prints */
|
||||
#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
|
||||
|
||||
struct cpufreq_governor;
|
||||
|
||||
/* /sys/devices/system/cpu/cpufreq: entry point for global variables */
|
||||
extern struct kobject *cpufreq_global_kobject;
|
||||
int cpufreq_get_global_kobject(void);
|
||||
void cpufreq_put_global_kobject(void);
|
||||
int cpufreq_sysfs_create_file(const struct attribute *attr);
|
||||
void cpufreq_sysfs_remove_file(const struct attribute *attr);
|
||||
struct cpufreq_freqs {
|
||||
unsigned int cpu; /* cpu nr */
|
||||
unsigned int old;
|
||||
unsigned int new;
|
||||
u8 flags; /* flags of cpufreq_driver, see below. */
|
||||
};
|
||||
|
||||
#define CPUFREQ_ETERNAL (-1)
|
||||
struct cpufreq_cpuinfo {
|
||||
unsigned int max_freq;
|
||||
unsigned int min_freq;
|
||||
|
@ -117,111 +82,59 @@ struct cpufreq_policy {
|
|||
|
||||
struct cpufreq_real_policy user_policy;
|
||||
|
||||
struct list_head policy_list;
|
||||
struct kobject kobj;
|
||||
struct completion kobj_unregister;
|
||||
int transition_ongoing; /* Tracks transition status */
|
||||
};
|
||||
|
||||
#define CPUFREQ_ADJUST (0)
|
||||
#define CPUFREQ_INCOMPATIBLE (1)
|
||||
#define CPUFREQ_NOTIFY (2)
|
||||
#define CPUFREQ_START (3)
|
||||
#define CPUFREQ_UPDATE_POLICY_CPU (4)
|
||||
|
||||
/* Only for ACPI */
|
||||
#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*/
|
||||
|
||||
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu);
|
||||
void cpufreq_cpu_put(struct cpufreq_policy *policy);
|
||||
|
||||
static inline bool policy_is_shared(struct cpufreq_policy *policy)
|
||||
{
|
||||
return cpumask_weight(policy->cpus) > 1;
|
||||
}
|
||||
|
||||
/******************** cpufreq transition notifiers *******************/
|
||||
/* /sys/devices/system/cpu/cpufreq: entry point for global variables */
|
||||
extern struct kobject *cpufreq_global_kobject;
|
||||
int cpufreq_get_global_kobject(void);
|
||||
void cpufreq_put_global_kobject(void);
|
||||
int cpufreq_sysfs_create_file(const struct attribute *attr);
|
||||
void cpufreq_sysfs_remove_file(const struct attribute *attr);
|
||||
|
||||
#define CPUFREQ_PRECHANGE (0)
|
||||
#define CPUFREQ_POSTCHANGE (1)
|
||||
#define CPUFREQ_RESUMECHANGE (8)
|
||||
#define CPUFREQ_SUSPENDCHANGE (9)
|
||||
#ifdef CONFIG_CPU_FREQ
|
||||
unsigned int cpufreq_get(unsigned int cpu);
|
||||
unsigned int cpufreq_quick_get(unsigned int cpu);
|
||||
unsigned int cpufreq_quick_get_max(unsigned int cpu);
|
||||
void disable_cpufreq(void);
|
||||
|
||||
struct cpufreq_freqs {
|
||||
unsigned int cpu; /* cpu nr */
|
||||
unsigned int old;
|
||||
unsigned int new;
|
||||
u8 flags; /* flags of cpufreq_driver, see below. */
|
||||
};
|
||||
|
||||
/**
|
||||
* cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch
|
||||
* safe)
|
||||
* @old: old value
|
||||
* @div: divisor
|
||||
* @mult: multiplier
|
||||
*
|
||||
*
|
||||
* new = old * mult / div
|
||||
*/
|
||||
static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
|
||||
u_int mult)
|
||||
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
|
||||
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
|
||||
int cpufreq_update_policy(unsigned int cpu);
|
||||
bool have_governor_per_policy(void);
|
||||
struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
|
||||
#else
|
||||
static inline unsigned int cpufreq_get(unsigned int cpu)
|
||||
{
|
||||
#if BITS_PER_LONG == 32
|
||||
|
||||
u64 result = ((u64) old) * ((u64) mult);
|
||||
do_div(result, div);
|
||||
return (unsigned long) result;
|
||||
|
||||
#elif BITS_PER_LONG == 64
|
||||
|
||||
unsigned long result = old * ((u64) mult);
|
||||
result /= div;
|
||||
return result;
|
||||
|
||||
return 0;
|
||||
}
|
||||
static inline unsigned int cpufreq_quick_get(unsigned int cpu)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline void disable_cpufreq(void) { }
|
||||
#endif
|
||||
};
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ GOVERNORS *
|
||||
*********************************************************************/
|
||||
|
||||
#define CPUFREQ_GOV_START 1
|
||||
#define CPUFREQ_GOV_STOP 2
|
||||
#define CPUFREQ_GOV_LIMITS 3
|
||||
#define CPUFREQ_GOV_POLICY_INIT 4
|
||||
#define CPUFREQ_GOV_POLICY_EXIT 5
|
||||
|
||||
struct cpufreq_governor {
|
||||
char name[CPUFREQ_NAME_LEN];
|
||||
int initialized;
|
||||
int (*governor) (struct cpufreq_policy *policy,
|
||||
unsigned int event);
|
||||
ssize_t (*show_setspeed) (struct cpufreq_policy *policy,
|
||||
char *buf);
|
||||
int (*store_setspeed) (struct cpufreq_policy *policy,
|
||||
unsigned int freq);
|
||||
unsigned int max_transition_latency; /* HW must be able to switch to
|
||||
next freq faster than this value in nano secs or we
|
||||
will fallback to performance governor */
|
||||
struct list_head governor_list;
|
||||
struct module *owner;
|
||||
};
|
||||
|
||||
/*
|
||||
* Pass a target to the cpufreq driver.
|
||||
*/
|
||||
extern int cpufreq_driver_target(struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
extern int __cpufreq_driver_target(struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
|
||||
extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy,
|
||||
unsigned int cpu);
|
||||
|
||||
int cpufreq_register_governor(struct cpufreq_governor *governor);
|
||||
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ DRIVER INTERFACE *
|
||||
|
@ -230,76 +143,6 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor);
|
|||
#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */
|
||||
#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */
|
||||
|
||||
struct freq_attr;
|
||||
|
||||
struct cpufreq_driver {
|
||||
struct module *owner;
|
||||
char name[CPUFREQ_NAME_LEN];
|
||||
u8 flags;
|
||||
/*
|
||||
* This should be set by platforms having multiple clock-domains, i.e.
|
||||
* supporting multiple policies. With this sysfs directories of governor
|
||||
* would be created in cpu/cpu<num>/cpufreq/ directory and so they can
|
||||
* use the same governor with different tunables for different clusters.
|
||||
*/
|
||||
bool have_governor_per_policy;
|
||||
|
||||
/* needed by all drivers */
|
||||
int (*init) (struct cpufreq_policy *policy);
|
||||
int (*verify) (struct cpufreq_policy *policy);
|
||||
|
||||
/* define one out of two */
|
||||
int (*setpolicy) (struct cpufreq_policy *policy);
|
||||
int (*target) (struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
|
||||
/* should be defined, if possible */
|
||||
unsigned int (*get) (unsigned int cpu);
|
||||
|
||||
/* optional */
|
||||
unsigned int (*getavg) (struct cpufreq_policy *policy,
|
||||
unsigned int cpu);
|
||||
int (*bios_limit) (int cpu, unsigned int *limit);
|
||||
|
||||
int (*exit) (struct cpufreq_policy *policy);
|
||||
int (*suspend) (struct cpufreq_policy *policy);
|
||||
int (*resume) (struct cpufreq_policy *policy);
|
||||
struct freq_attr **attr;
|
||||
};
|
||||
|
||||
/* flags */
|
||||
|
||||
#define CPUFREQ_STICKY 0x01 /* the driver isn't removed even if
|
||||
* all ->init() calls failed */
|
||||
#define CPUFREQ_CONST_LOOPS 0x02 /* loops_per_jiffy or other kernel
|
||||
* "constants" aren't affected by
|
||||
* frequency transitions */
|
||||
#define CPUFREQ_PM_NO_WARN 0x04 /* don't warn on suspend/resume speed
|
||||
* mismatches */
|
||||
|
||||
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
|
||||
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
|
||||
|
||||
void cpufreq_notify_transition(struct cpufreq_policy *policy,
|
||||
struct cpufreq_freqs *freqs, unsigned int state);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
struct freq_attr {
|
||||
struct attribute attr;
|
||||
ssize_t (*show)(struct cpufreq_policy *, char *);
|
||||
|
@ -334,52 +177,181 @@ __ATTR(_name, 0444, show_##_name, NULL)
|
|||
static struct global_attr _name = \
|
||||
__ATTR(_name, 0644, show_##_name, store_##_name)
|
||||
|
||||
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu);
|
||||
void cpufreq_cpu_put(struct cpufreq_policy *data);
|
||||
|
||||
struct cpufreq_driver {
|
||||
char name[CPUFREQ_NAME_LEN];
|
||||
u8 flags;
|
||||
/*
|
||||
* This should be set by platforms having multiple clock-domains, i.e.
|
||||
* supporting multiple policies. With this sysfs directories of governor
|
||||
* would be created in cpu/cpu<num>/cpufreq/ directory and so they can
|
||||
* use the same governor with different tunables for different clusters.
|
||||
*/
|
||||
bool have_governor_per_policy;
|
||||
|
||||
/* needed by all drivers */
|
||||
int (*init) (struct cpufreq_policy *policy);
|
||||
int (*verify) (struct cpufreq_policy *policy);
|
||||
|
||||
/* define one out of two */
|
||||
int (*setpolicy) (struct cpufreq_policy *policy);
|
||||
int (*target) (struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
|
||||
/* should be defined, if possible */
|
||||
unsigned int (*get) (unsigned int cpu);
|
||||
|
||||
/* optional */
|
||||
int (*bios_limit) (int cpu, unsigned int *limit);
|
||||
|
||||
int (*exit) (struct cpufreq_policy *policy);
|
||||
int (*suspend) (struct cpufreq_policy *policy);
|
||||
int (*resume) (struct cpufreq_policy *policy);
|
||||
struct freq_attr **attr;
|
||||
};
|
||||
|
||||
/* flags */
|
||||
#define CPUFREQ_STICKY 0x01 /* the driver isn't removed even if
|
||||
* all ->init() calls failed */
|
||||
#define CPUFREQ_CONST_LOOPS 0x02 /* loops_per_jiffy or other kernel
|
||||
* "constants" aren't affected by
|
||||
* frequency transitions */
|
||||
#define CPUFREQ_PM_NO_WARN 0x04 /* don't warn on suspend/resume speed
|
||||
* mismatches */
|
||||
|
||||
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
|
||||
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
|
||||
|
||||
const char *cpufreq_get_current_driver(void);
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ 2.6. INTERFACE *
|
||||
*********************************************************************/
|
||||
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
|
||||
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
|
||||
int cpufreq_update_policy(unsigned int cpu);
|
||||
bool have_governor_per_policy(void);
|
||||
struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
|
||||
|
||||
#ifdef CONFIG_CPU_FREQ
|
||||
/*
|
||||
* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it
|
||||
*/
|
||||
unsigned int cpufreq_get(unsigned int cpu);
|
||||
#else
|
||||
static inline unsigned int cpufreq_get(unsigned int cpu)
|
||||
static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
|
||||
unsigned int min, unsigned int max)
|
||||
{
|
||||
return 0;
|
||||
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;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it
|
||||
*/
|
||||
#ifdef CONFIG_CPU_FREQ
|
||||
unsigned int cpufreq_quick_get(unsigned int cpu);
|
||||
unsigned int cpufreq_quick_get_max(unsigned int cpu);
|
||||
#else
|
||||
static inline unsigned int cpufreq_quick_get(unsigned int cpu)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ DEFAULT GOVERNOR *
|
||||
* CPUFREQ NOTIFIER INTERFACE *
|
||||
*********************************************************************/
|
||||
|
||||
#define CPUFREQ_TRANSITION_NOTIFIER (0)
|
||||
#define CPUFREQ_POLICY_NOTIFIER (1)
|
||||
|
||||
/* Transition notifiers */
|
||||
#define CPUFREQ_PRECHANGE (0)
|
||||
#define CPUFREQ_POSTCHANGE (1)
|
||||
#define CPUFREQ_RESUMECHANGE (8)
|
||||
#define CPUFREQ_SUSPENDCHANGE (9)
|
||||
|
||||
/* Policy Notifiers */
|
||||
#define CPUFREQ_ADJUST (0)
|
||||
#define CPUFREQ_INCOMPATIBLE (1)
|
||||
#define CPUFREQ_NOTIFY (2)
|
||||
#define CPUFREQ_START (3)
|
||||
#define CPUFREQ_UPDATE_POLICY_CPU (4)
|
||||
|
||||
#ifdef CONFIG_CPU_FREQ
|
||||
int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
|
||||
int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
|
||||
|
||||
void cpufreq_notify_transition(struct cpufreq_policy *policy,
|
||||
struct cpufreq_freqs *freqs, unsigned int state);
|
||||
|
||||
#else /* CONFIG_CPU_FREQ */
|
||||
static inline int cpufreq_register_notifier(struct notifier_block *nb,
|
||||
unsigned int list)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline int cpufreq_unregister_notifier(struct notifier_block *nb,
|
||||
unsigned int list)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif /* !CONFIG_CPU_FREQ */
|
||||
|
||||
/**
|
||||
* cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch
|
||||
* safe)
|
||||
* @old: old value
|
||||
* @div: divisor
|
||||
* @mult: multiplier
|
||||
*
|
||||
*
|
||||
* new = old * mult / div
|
||||
*/
|
||||
static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
|
||||
u_int mult)
|
||||
{
|
||||
#if BITS_PER_LONG == 32
|
||||
u64 result = ((u64) old) * ((u64) mult);
|
||||
do_div(result, div);
|
||||
return (unsigned long) result;
|
||||
|
||||
#elif BITS_PER_LONG == 64
|
||||
unsigned long result = old * ((u64) mult);
|
||||
result /= div;
|
||||
return result;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
* CPUFREQ GOVERNORS *
|
||||
*********************************************************************/
|
||||
|
||||
/*
|
||||
* If (cpufreq_driver->target) exists, the ->governor decides what frequency
|
||||
* within the limits is used. If (cpufreq_driver->setpolicy> exists, these
|
||||
* two generic policies are available:
|
||||
*/
|
||||
#define CPUFREQ_POLICY_POWERSAVE (1)
|
||||
#define CPUFREQ_POLICY_PERFORMANCE (2)
|
||||
|
||||
/* Governor Events */
|
||||
#define CPUFREQ_GOV_START 1
|
||||
#define CPUFREQ_GOV_STOP 2
|
||||
#define CPUFREQ_GOV_LIMITS 3
|
||||
#define CPUFREQ_GOV_POLICY_INIT 4
|
||||
#define CPUFREQ_GOV_POLICY_EXIT 5
|
||||
|
||||
struct cpufreq_governor {
|
||||
char name[CPUFREQ_NAME_LEN];
|
||||
int initialized;
|
||||
int (*governor) (struct cpufreq_policy *policy,
|
||||
unsigned int event);
|
||||
ssize_t (*show_setspeed) (struct cpufreq_policy *policy,
|
||||
char *buf);
|
||||
int (*store_setspeed) (struct cpufreq_policy *policy,
|
||||
unsigned int freq);
|
||||
unsigned int max_transition_latency; /* HW must be able to switch to
|
||||
next freq faster than this value in nano secs or we
|
||||
will fallback to performance governor */
|
||||
struct list_head governor_list;
|
||||
struct module *owner;
|
||||
};
|
||||
|
||||
/* Pass a target to the cpufreq driver */
|
||||
int cpufreq_driver_target(struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
int __cpufreq_driver_target(struct cpufreq_policy *policy,
|
||||
unsigned int target_freq,
|
||||
unsigned int relation);
|
||||
int cpufreq_register_governor(struct cpufreq_governor *governor);
|
||||
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
|
||||
|
||||
/* CPUFREQ DEFAULT GOVERNOR */
|
||||
/*
|
||||
* Performance governor is fallback governor if any other gov failed to auto
|
||||
* load due latency restrictions
|
||||
|
@ -428,18 +400,16 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
|
|||
unsigned int relation,
|
||||
unsigned int *index);
|
||||
|
||||
/* the following 3 funtions are for cpufreq core use only */
|
||||
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy);
|
||||
ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
|
||||
|
||||
/* the following funtion is for cpufreq core use only */
|
||||
struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu);
|
||||
|
||||
/* the following are really really optional */
|
||||
extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;
|
||||
|
||||
void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
|
||||
unsigned int cpu);
|
||||
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy);
|
||||
|
||||
void cpufreq_frequency_table_put_attr(unsigned int cpu);
|
||||
|
||||
ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
|
||||
|
||||
#endif /* _LINUX_CPUFREQ_H */
|
||||
|
|
Loading…
Reference in a new issue