diff options
Diffstat (limited to 'drivers/cpufreq/cpufreq_conservative.c')
-rw-r--r-- | drivers/cpufreq/cpufreq_conservative.c | 145 |
1 files changed, 9 insertions, 136 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 526bfbf69611..33b56e5c5c14 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -76,13 +76,10 @@ static DEFINE_PER_CPU(struct cpu_dbs_info_s, cs_cpu_dbs_info); static unsigned int dbs_enable; /* number of CPUs using this policy */ /* - * dbs_mutex protects data in dbs_tuners_ins from concurrent changes on - * different CPUs. It protects dbs_enable in governor start/stop. + * dbs_mutex protects dbs_enable in governor start/stop. */ static DEFINE_MUTEX(dbs_mutex); -static struct workqueue_struct *kconservative_wq; - static struct dbs_tuners { unsigned int sampling_rate; unsigned int sampling_down_factor; @@ -118,7 +115,7 @@ static inline cputime64_t get_cpu_idle_time_jiffy(unsigned int cpu, if (wall) *wall = (cputime64_t)jiffies_to_usecs(cur_wall_time); - return (cputime64_t)jiffies_to_usecs(idle_time);; + return (cputime64_t)jiffies_to_usecs(idle_time); } static inline cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall) @@ -164,21 +161,12 @@ static struct notifier_block dbs_cpufreq_notifier_block = { }; /************************** sysfs interface ************************/ -static ssize_t show_sampling_rate_max(struct kobject *kobj, - struct attribute *attr, char *buf) -{ - printk_once(KERN_INFO "CPUFREQ: conservative sampling_rate_max " - "sysfs file is deprecated - used by: %s\n", current->comm); - return sprintf(buf, "%u\n", -1U); -} - static ssize_t show_sampling_rate_min(struct kobject *kobj, struct attribute *attr, char *buf) { return sprintf(buf, "%u\n", min_sampling_rate); } -define_one_global_ro(sampling_rate_max); define_one_global_ro(sampling_rate_min); /* cpufreq_conservative Governor Tunables */ @@ -195,33 +183,6 @@ show_one(down_threshold, down_threshold); show_one(ignore_nice_load, ignore_nice); show_one(freq_step, freq_step); -/*** delete after deprecation time ***/ -#define DEPRECATION_MSG(file_name) \ - printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \ - "interface is deprecated - " #file_name "\n"); - -#define show_one_old(file_name) \ -static ssize_t show_##file_name##_old \ -(struct cpufreq_policy *unused, char *buf) \ -{ \ - printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \ - "interface is deprecated - " #file_name "\n"); \ - return show_##file_name(NULL, NULL, buf); \ -} -show_one_old(sampling_rate); -show_one_old(sampling_down_factor); -show_one_old(up_threshold); -show_one_old(down_threshold); -show_one_old(ignore_nice_load); -show_one_old(freq_step); -show_one_old(sampling_rate_min); -show_one_old(sampling_rate_max); - -cpufreq_freq_attr_ro_old(sampling_rate_min); -cpufreq_freq_attr_ro_old(sampling_rate_max); - -/*** delete after deprecation time ***/ - static ssize_t store_sampling_down_factor(struct kobject *a, struct attribute *b, const char *buf, size_t count) @@ -233,10 +194,7 @@ static ssize_t store_sampling_down_factor(struct kobject *a, if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1) return -EINVAL; - mutex_lock(&dbs_mutex); dbs_tuners_ins.sampling_down_factor = input; - mutex_unlock(&dbs_mutex); - return count; } @@ -250,10 +208,7 @@ static ssize_t store_sampling_rate(struct kobject *a, struct attribute *b, if (ret != 1) return -EINVAL; - mutex_lock(&dbs_mutex); dbs_tuners_ins.sampling_rate = max(input, min_sampling_rate); - mutex_unlock(&dbs_mutex); - return count; } @@ -264,16 +219,11 @@ static ssize_t store_up_threshold(struct kobject *a, struct attribute *b, int ret; ret = sscanf(buf, "%u", &input); - mutex_lock(&dbs_mutex); if (ret != 1 || input > 100 || - input <= dbs_tuners_ins.down_threshold) { - mutex_unlock(&dbs_mutex); + input <= dbs_tuners_ins.down_threshold) return -EINVAL; - } dbs_tuners_ins.up_threshold = input; - mutex_unlock(&dbs_mutex); - return count; } @@ -284,17 +234,12 @@ static ssize_t store_down_threshold(struct kobject *a, struct attribute *b, int ret; ret = sscanf(buf, "%u", &input); - mutex_lock(&dbs_mutex); /* cannot be lower than 11 otherwise freq will not fall */ if (ret != 1 || input < 11 || input > 100 || - input >= dbs_tuners_ins.up_threshold) { - mutex_unlock(&dbs_mutex); + input >= dbs_tuners_ins.up_threshold) return -EINVAL; - } dbs_tuners_ins.down_threshold = input; - mutex_unlock(&dbs_mutex); - return count; } @@ -313,11 +258,9 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b, if (input > 1) input = 1; - mutex_lock(&dbs_mutex); - if (input == dbs_tuners_ins.ignore_nice) { /* nothing to do */ - mutex_unlock(&dbs_mutex); + if (input == dbs_tuners_ins.ignore_nice) /* nothing to do */ return count; - } + dbs_tuners_ins.ignore_nice = input; /* we need to re-evaluate prev_cpu_idle */ @@ -329,8 +272,6 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b, if (dbs_tuners_ins.ignore_nice) dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice; } - mutex_unlock(&dbs_mutex); - return count; } @@ -349,10 +290,7 @@ static ssize_t store_freq_step(struct kobject *a, struct attribute *b, /* no need to test here if freq_step is zero as the user might actually * want this, they would be crazy though :) */ - mutex_lock(&dbs_mutex); dbs_tuners_ins.freq_step = input; - mutex_unlock(&dbs_mutex); - return count; } @@ -364,7 +302,6 @@ define_one_global_rw(ignore_nice_load); define_one_global_rw(freq_step); static struct attribute *dbs_attributes[] = { - &sampling_rate_max.attr, &sampling_rate_min.attr, &sampling_rate.attr, &sampling_down_factor.attr, @@ -380,49 +317,6 @@ static struct attribute_group dbs_attr_group = { .name = "conservative", }; -/*** delete after deprecation time ***/ - -#define write_one_old(file_name) \ -static ssize_t store_##file_name##_old \ -(struct cpufreq_policy *unused, const char *buf, size_t count) \ -{ \ - printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \ - "interface is deprecated - " #file_name "\n"); \ - return store_##file_name(NULL, NULL, buf, count); \ -} -write_one_old(sampling_rate); -write_one_old(sampling_down_factor); -write_one_old(up_threshold); -write_one_old(down_threshold); -write_one_old(ignore_nice_load); -write_one_old(freq_step); - -cpufreq_freq_attr_rw_old(sampling_rate); -cpufreq_freq_attr_rw_old(sampling_down_factor); -cpufreq_freq_attr_rw_old(up_threshold); -cpufreq_freq_attr_rw_old(down_threshold); -cpufreq_freq_attr_rw_old(ignore_nice_load); -cpufreq_freq_attr_rw_old(freq_step); - -static struct attribute *dbs_attributes_old[] = { - &sampling_rate_max_old.attr, - &sampling_rate_min_old.attr, - &sampling_rate_old.attr, - &sampling_down_factor_old.attr, - &up_threshold_old.attr, - &down_threshold_old.attr, - &ignore_nice_load_old.attr, - &freq_step_old.attr, - NULL -}; - -static struct attribute_group dbs_attr_group_old = { - .attrs = dbs_attributes_old, - .name = "conservative", -}; - -/*** delete after deprecation time ***/ - /************************** sysfs end ************************/ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info) @@ -560,7 +454,7 @@ static void do_dbs_timer(struct work_struct *work) dbs_check_cpu(dbs_info); - queue_delayed_work_on(cpu, kconservative_wq, &dbs_info->work, delay); + schedule_delayed_work_on(cpu, &dbs_info->work, delay); mutex_unlock(&dbs_info->timer_mutex); } @@ -572,8 +466,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info) dbs_info->enable = 1; INIT_DELAYED_WORK_DEFERRABLE(&dbs_info->work, do_dbs_timer); - queue_delayed_work_on(dbs_info->cpu, kconservative_wq, &dbs_info->work, - delay); + schedule_delayed_work_on(dbs_info->cpu, &dbs_info->work, delay); } static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info) @@ -599,12 +492,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, mutex_lock(&dbs_mutex); - rc = sysfs_create_group(&policy->kobj, &dbs_attr_group_old); - if (rc) { - mutex_unlock(&dbs_mutex); - return rc; - } - for_each_cpu(j, policy->cpus) { struct cpu_dbs_info_s *j_dbs_info; j_dbs_info = &per_cpu(cs_cpu_dbs_info, j); @@ -667,7 +554,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, dbs_timer_exit(this_dbs_info); mutex_lock(&dbs_mutex); - sysfs_remove_group(&policy->kobj, &dbs_attr_group_old); dbs_enable--; mutex_destroy(&this_dbs_info->timer_mutex); @@ -716,25 +602,12 @@ struct cpufreq_governor cpufreq_gov_conservative = { static int __init cpufreq_gov_dbs_init(void) { - int err; - - kconservative_wq = create_workqueue("kconservative"); - if (!kconservative_wq) { - printk(KERN_ERR "Creation of kconservative failed\n"); - return -EFAULT; - } - - err = cpufreq_register_governor(&cpufreq_gov_conservative); - if (err) - destroy_workqueue(kconservative_wq); - - return err; + return cpufreq_register_governor(&cpufreq_gov_conservative); } static void __exit cpufreq_gov_dbs_exit(void) { cpufreq_unregister_governor(&cpufreq_gov_conservative); - destroy_workqueue(kconservative_wq); } |