pr_debug("saving %lu as reference value for loops_per_jiffy; "
"freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
}
- if ((val == CPUFREQ_PRECHANGE && ci->old < ci->new) ||
- (val == CPUFREQ_POSTCHANGE && ci->old > ci->new) ||
+ if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) ||
(val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
ci->new);
*/
static int cpufreq_add_dev_policy(unsigned int cpu,
struct cpufreq_policy *policy,
- struct sys_device *sys_dev)
+ struct device *dev)
{
int ret = 0;
#ifdef CONFIG_SMP
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
pr_debug("CPU already managed, adding link\n");
- ret = sysfs_create_link(&sys_dev->kobj,
+ ret = sysfs_create_link(&dev->kobj,
&managed_policy->kobj,
"cpufreq");
if (ret)
for_each_cpu(j, policy->cpus) {
struct cpufreq_policy *managed_policy;
- struct sys_device *cpu_sys_dev;
+ struct device *cpu_dev;
if (j == cpu)
continue;
pr_debug("CPU %u already managed, adding link\n", j);
managed_policy = cpufreq_cpu_get(cpu);
- cpu_sys_dev = get_cpu_sysdev(j);
- ret = sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
+ cpu_dev = get_cpu_device(j);
+ ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
"cpufreq");
if (ret) {
cpufreq_cpu_put(managed_policy);
static int cpufreq_add_dev_interface(unsigned int cpu,
struct cpufreq_policy *policy,
- struct sys_device *sys_dev)
+ struct device *dev)
{
struct cpufreq_policy new_policy;
struct freq_attr **drv_attr;
/* prepare interface data */
ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
- &sys_dev->kobj, "cpufreq");
+ &dev->kobj, "cpufreq");
if (ret)
return ret;
* with with cpu hotplugging and all hell will break loose. Tried to clean this
* mess up, but more thorough testing is needed. - Mathieu
*/
-static int cpufreq_add_dev(struct sys_device *sys_dev)
+static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
{
- unsigned int cpu = sys_dev->id;
+ unsigned int cpu = dev->id;
int ret = 0, found = 0;
struct cpufreq_policy *policy;
unsigned long flags;
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_START, policy);
- ret = cpufreq_add_dev_policy(cpu, policy, sys_dev);
+ ret = cpufreq_add_dev_policy(cpu, policy, dev);
if (ret) {
if (ret > 0)
/* This is a managed cpu, symlink created,
goto err_unlock_policy;
}
- ret = cpufreq_add_dev_interface(cpu, policy, sys_dev);
+ ret = cpufreq_add_dev_interface(cpu, policy, dev);
if (ret)
goto err_out_unregister;
* Caller should already have policy_rwsem in write mode for this CPU.
* This routine frees the rwsem before returning.
*/
-static int __cpufreq_remove_dev(struct sys_device *sys_dev)
+static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
{
- unsigned int cpu = sys_dev->id;
+ unsigned int cpu = dev->id;
unsigned long flags;
struct cpufreq_policy *data;
struct kobject *kobj;
struct completion *cmp;
#ifdef CONFIG_SMP
- struct sys_device *cpu_sys_dev;
+ struct device *cpu_dev;
unsigned int j;
#endif
pr_debug("removing link\n");
cpumask_clear_cpu(cpu, data->cpus);
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
- kobj = &sys_dev->kobj;
+ kobj = &dev->kobj;
cpufreq_cpu_put(data);
unlock_policy_rwsem_write(cpu);
sysfs_remove_link(kobj, "cpufreq");
strncpy(per_cpu(cpufreq_cpu_governor, j),
data->governor->name, CPUFREQ_NAME_LEN);
#endif
- cpu_sys_dev = get_cpu_sysdev(j);
- kobj = &cpu_sys_dev->kobj;
+ cpu_dev = get_cpu_device(j);
+ kobj = &cpu_dev->kobj;
unlock_policy_rwsem_write(cpu);
sysfs_remove_link(kobj, "cpufreq");
lock_policy_rwsem_write(cpu);
if (unlikely(cpumask_weight(data->cpus) > 1)) {
/* first sibling now owns the new sysfs dir */
cpumask_clear_cpu(cpu, data->cpus);
- cpufreq_add_dev(get_cpu_sysdev(cpumask_first(data->cpus)));
+ cpufreq_add_dev(get_cpu_device(cpumask_first(data->cpus)), NULL);
/* finally remove our own symlink */
lock_policy_rwsem_write(cpu);
- __cpufreq_remove_dev(sys_dev);
+ __cpufreq_remove_dev(dev, sif);
}
#endif
}
-static int cpufreq_remove_dev(struct sys_device *sys_dev)
+static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
{
- unsigned int cpu = sys_dev->id;
+ unsigned int cpu = dev->id;
int retval;
if (cpu_is_offline(cpu))
if (unlikely(lock_policy_rwsem_write(cpu)))
BUG();
- retval = __cpufreq_remove_dev(sys_dev);
+ retval = __cpufreq_remove_dev(dev, sif);
return retval;
}
}
EXPORT_SYMBOL(cpufreq_get);
-static struct sysdev_driver cpufreq_sysdev_driver = {
- .add = cpufreq_add_dev,
- .remove = cpufreq_remove_dev,
+static struct subsys_interface cpufreq_interface = {
+ .name = "cpufreq",
+ .subsys = &cpu_subsys,
+ .add_dev = cpufreq_add_dev,
+ .remove_dev = cpufreq_remove_dev,
};
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
- struct sys_device *sys_dev;
+ struct device *dev;
- sys_dev = get_cpu_sysdev(cpu);
- if (sys_dev) {
+ dev = get_cpu_device(cpu);
+ if (dev) {
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
- cpufreq_add_dev(sys_dev);
+ cpufreq_add_dev(dev, NULL);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
if (unlikely(lock_policy_rwsem_write(cpu)))
BUG();
- __cpufreq_remove_dev(sys_dev);
+ __cpufreq_remove_dev(dev, NULL);
break;
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
- cpufreq_add_dev(sys_dev);
+ cpufreq_add_dev(dev, NULL);
break;
}
}
cpufreq_driver = driver_data;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
- ret = sysdev_driver_register(&cpu_sysdev_class,
- &cpufreq_sysdev_driver);
+ ret = subsys_interface_register(&cpufreq_interface);
if (ret)
goto err_null_driver;
if (ret) {
pr_debug("no CPU initialized for driver %s\n",
driver_data->name);
- goto err_sysdev_unreg;
+ goto err_if_unreg;
}
}
pr_debug("driver %s up and running\n", driver_data->name);
return 0;
-err_sysdev_unreg:
- sysdev_driver_unregister(&cpu_sysdev_class,
- &cpufreq_sysdev_driver);
+err_if_unreg:
+ subsys_interface_unregister(&cpufreq_interface);
err_null_driver:
spin_lock_irqsave(&cpufreq_driver_lock, flags);
cpufreq_driver = NULL;
pr_debug("unregistering driver %s\n", driver->name);
- sysdev_driver_unregister(&cpu_sysdev_class, &cpufreq_sysdev_driver);
+ subsys_interface_unregister(&cpufreq_interface);
unregister_hotcpu_notifier(&cpufreq_cpu_notifier);
spin_lock_irqsave(&cpufreq_driver_lock, flags);
init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
}
- cpufreq_global_kobject = kobject_create_and_add("cpufreq",
- &cpu_sysdev_class.kset.kobj);
+ cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
BUG_ON(!cpufreq_global_kobject);
register_syscore_ops(&cpufreq_syscore_ops);
.powersave_bias = 0,
};
-static inline cputime64_t get_cpu_idle_time_jiffy(unsigned int cpu,
- cputime64_t *wall)
+static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
{
- cputime64_t idle_time;
- cputime64_t cur_wall_time;
- cputime64_t busy_time;
+ u64 idle_time;
+ u64 cur_wall_time;
+ u64 busy_time;
cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
- busy_time = cputime64_add(kstat_cpu(cpu).cpustat.user,
- kstat_cpu(cpu).cpustat.system);
- busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.irq);
- busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.softirq);
- busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.steal);
- busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.nice);
+ busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
+ busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
+ busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
+ busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
+ busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
+ busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
- idle_time = cputime64_sub(cur_wall_time, busy_time);
+ idle_time = cur_wall_time - busy_time;
if (wall)
- *wall = (cputime64_t)jiffies_to_usecs(cur_wall_time);
+ *wall = jiffies_to_usecs(cur_wall_time);
- return (cputime64_t)jiffies_to_usecs(idle_time);
+ return jiffies_to_usecs(idle_time);
}
static inline cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall)
dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
&dbs_info->prev_cpu_wall);
if (dbs_tuners_ins.ignore_nice)
- dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
+ dbs_info->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
}
return count;
cur_idle_time = get_cpu_idle_time(j, &cur_wall_time);
cur_iowait_time = get_cpu_iowait_time(j, &cur_wall_time);
- wall_time = (unsigned int) cputime64_sub(cur_wall_time,
- j_dbs_info->prev_cpu_wall);
+ wall_time = (unsigned int)
+ (cur_wall_time - j_dbs_info->prev_cpu_wall);
j_dbs_info->prev_cpu_wall = cur_wall_time;
- idle_time = (unsigned int) cputime64_sub(cur_idle_time,
- j_dbs_info->prev_cpu_idle);
+ idle_time = (unsigned int)
+ (cur_idle_time - j_dbs_info->prev_cpu_idle);
j_dbs_info->prev_cpu_idle = cur_idle_time;
- iowait_time = (unsigned int) cputime64_sub(cur_iowait_time,
- j_dbs_info->prev_cpu_iowait);
+ iowait_time = (unsigned int)
+ (cur_iowait_time - j_dbs_info->prev_cpu_iowait);
j_dbs_info->prev_cpu_iowait = cur_iowait_time;
if (dbs_tuners_ins.ignore_nice) {
- cputime64_t cur_nice;
+ u64 cur_nice;
unsigned long cur_nice_jiffies;
- cur_nice = cputime64_sub(kstat_cpu(j).cpustat.nice,
- j_dbs_info->prev_cpu_nice);
+ cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE] -
+ j_dbs_info->prev_cpu_nice;
/*
* Assumption: nice time between sampling periods will
* be less than 2^32 jiffies for 32 bit sys
cur_nice_jiffies = (unsigned long)
cputime64_to_jiffies64(cur_nice);
- j_dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
+ j_dbs_info->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
idle_time += jiffies_to_usecs(cur_nice_jiffies);
}
j_dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
&j_dbs_info->prev_cpu_wall);
- if (dbs_tuners_ins.ignore_nice) {
+ if (dbs_tuners_ins.ignore_nice)
j_dbs_info->prev_cpu_nice =
- kstat_cpu(j).cpustat.nice;
- }
+ kcpustat_cpu(j).cpustat[CPUTIME_NICE];
}
this_dbs_info->cpu = cpu;
this_dbs_info->rate_mult = 1;
static int __init cpufreq_gov_dbs_init(void)
{
- cputime64_t wall;
u64 idle_time;
int cpu = get_cpu();
- idle_time = get_cpu_idle_time_us(cpu, &wall);
+ idle_time = get_cpu_idle_time_us(cpu, NULL);
put_cpu();
if (idle_time != -1ULL) {
/* Idle micro accounting is supported. Use finer thresholds */
projects / karo-tx-linux.git / commitdiff