diff options
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 27 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.h | 2 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_ondemand.c | 12 |
3 files changed, 15 insertions, 26 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 65ed859030ba..60268160e0ad 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -137,10 +137,9 @@ unsigned int dbs_update(struct cpufreq_policy *policy) struct dbs_governor *gov = dbs_governor_of(policy); struct policy_dbs_info *policy_dbs = policy->governor_data; struct dbs_data *dbs_data = policy_dbs->dbs_data; - struct od_dbs_tuners *od_tuners = dbs_data->tuners; unsigned int ignore_nice = dbs_data->ignore_nice_load; unsigned int max_load = 0; - unsigned int sampling_rate, j; + unsigned int sampling_rate, io_busy, j; /* * Sometimes governors may use an additional multiplier to increase @@ -149,6 +148,12 @@ unsigned int dbs_update(struct cpufreq_policy *policy) * conservative. */ sampling_rate = dbs_data->sampling_rate * policy_dbs->rate_mult; + /* + * For the purpose of ondemand, waiting for disk IO is an indication + * that you're performance critical, and not that the system is actually + * idle, so do not add the iowait time to the CPU idle time then. + */ + io_busy = dbs_data->io_is_busy; /* Get Absolute Load */ for_each_cpu(j, policy->cpus) { @@ -156,18 +161,9 @@ unsigned int dbs_update(struct cpufreq_policy *policy) u64 cur_wall_time, cur_idle_time; unsigned int idle_time, wall_time; unsigned int load; - int io_busy = 0; j_cdbs = gov->get_cpu_cdbs(j); - /* - * For the purpose of ondemand, waiting for disk IO is - * an indication that you're performance critical, and - * not that the system is actually idle. So do not add - * the iowait time to the cpu idle time. - */ - if (gov->governor == GOV_ONDEMAND) - io_busy = od_tuners->io_is_busy; cur_idle_time = get_cpu_idle_time(j, &cur_wall_time, io_busy); wall_time = cur_wall_time - j_cdbs->prev_cpu_wall; @@ -522,7 +518,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy) struct policy_dbs_info *policy_dbs = policy->governor_data; struct dbs_data *dbs_data = policy_dbs->dbs_data; unsigned int sampling_rate, ignore_nice, j, cpu = policy->cpu; - int io_busy = 0; + unsigned int io_busy; if (!policy->cur) return -EINVAL; @@ -532,12 +528,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy) sampling_rate = dbs_data->sampling_rate; ignore_nice = dbs_data->ignore_nice_load; - - if (gov->governor == GOV_ONDEMAND) { - struct od_dbs_tuners *od_tuners = dbs_data->tuners; - - io_busy = od_tuners->io_is_busy; - } + io_busy = dbs_data->io_is_busy; for_each_cpu(j, policy->cpus) { struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j); diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 675e1cdbb46c..7b3639328066 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -71,6 +71,7 @@ struct dbs_data { unsigned int sampling_rate; unsigned int sampling_down_factor; unsigned int up_threshold; + unsigned int io_is_busy; struct kobject kobj; struct list_head policy_dbs_list; @@ -177,7 +178,6 @@ struct cs_cpu_dbs_info_s { /* Per policy Governors sysfs tunables */ struct od_dbs_tuners { unsigned int powersave_bias; - unsigned int io_is_busy; }; struct cs_dbs_tuners { diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 375fdcfbc02e..330b5884b99b 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -220,7 +220,6 @@ static struct dbs_governor od_dbs_gov; static ssize_t store_io_is_busy(struct dbs_data *dbs_data, const char *buf, size_t count) { - struct od_dbs_tuners *od_tuners = dbs_data->tuners; unsigned int input; int ret; unsigned int j; @@ -228,14 +227,14 @@ static ssize_t store_io_is_busy(struct dbs_data *dbs_data, const char *buf, ret = sscanf(buf, "%u", &input); if (ret != 1) return -EINVAL; - od_tuners->io_is_busy = !!input; + dbs_data->io_is_busy = !!input; /* we need to re-evaluate prev_cpu_idle */ for_each_online_cpu(j) { struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, j); dbs_info->cdbs.prev_cpu_idle = get_cpu_idle_time(j, - &dbs_info->cdbs.prev_cpu_wall, od_tuners->io_is_busy); + &dbs_info->cdbs.prev_cpu_wall, dbs_data->io_is_busy); } return count; } @@ -286,7 +285,6 @@ static ssize_t store_sampling_down_factor(struct dbs_data *dbs_data, static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data, const char *buf, size_t count) { - struct od_dbs_tuners *od_tuners = dbs_data->tuners; unsigned int input; int ret; @@ -309,7 +307,7 @@ static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data, struct od_cpu_dbs_info_s *dbs_info; dbs_info = &per_cpu(od_cpu_dbs_info, j); dbs_info->cdbs.prev_cpu_idle = get_cpu_idle_time(j, - &dbs_info->cdbs.prev_cpu_wall, od_tuners->io_is_busy); + &dbs_info->cdbs.prev_cpu_wall, dbs_data->io_is_busy); if (dbs_data->ignore_nice_load) dbs_info->cdbs.prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE]; @@ -342,7 +340,7 @@ gov_show_one_common(up_threshold); gov_show_one_common(sampling_down_factor); gov_show_one_common(ignore_nice_load); gov_show_one_common(min_sampling_rate); -gov_show_one(od, io_is_busy); +gov_show_one_common(io_is_busy); gov_show_one(od, powersave_bias); gov_attr_rw(sampling_rate); @@ -401,7 +399,7 @@ static int od_init(struct dbs_data *dbs_data, bool notify) dbs_data->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR; dbs_data->ignore_nice_load = 0; tuners->powersave_bias = default_powersave_bias; - tuners->io_is_busy = should_io_be_busy(); + dbs_data->io_is_busy = should_io_be_busy(); dbs_data->tuners = tuners; return 0; |