From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933703AbcBCXm4 (ORCPT ); Wed, 3 Feb 2016 18:42:56 -0500 Received: from v094114.home.net.pl ([79.96.170.134]:60252 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757656AbcBCXjo (ORCPT ); Wed, 3 Feb 2016 18:39:44 -0500 From: "Rafael J. Wysocki" To: Linux PM list Cc: Linux Kernel Mailing List , Viresh Kumar , Srinivas Pandruvada , Juri Lelli , Steve Muckle , Saravana Kannan Subject: [PATCH 8/11] cpufreq: governor: Drop the gov pointer from struct dbs_data Date: Thu, 04 Feb 2016 00:35:01 +0100 Message-ID: <2027049.89TTYSMccL@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/4.5.0-rc1+; KDE/4.11.5; x86_64; ; ) In-Reply-To: <3705929.bslqXH980s@vostro.rjw.lan> References: <3705929.bslqXH980s@vostro.rjw.lan> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rafael J. Wysocki Since it is possible to obtain a pointer to struct dbs_governor from a pointer to the struct governor embedded in it with the help of container_of(), the additional gov pointer in struct dbs_data isn't really necessary. Drop that pointer and make the code using it reach the dbs_governor object via policy->governor. Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_conservative.c | 2 - drivers/cpufreq/cpufreq_governor.c | 62 ++++++++++++++++----------------- drivers/cpufreq/cpufreq_governor.h | 8 +++- drivers/cpufreq/cpufreq_ondemand.c | 2 - 4 files changed, 39 insertions(+), 35 deletions(-) Index: linux-pm/drivers/cpufreq/cpufreq_governor.h =================================================================== --- linux-pm.orig/drivers/cpufreq/cpufreq_governor.h +++ linux-pm/drivers/cpufreq/cpufreq_governor.h @@ -220,9 +220,13 @@ struct dbs_governor { void *gov_ops; }; +static inline struct dbs_governor *dbs_governor_of(struct cpufreq_policy *policy) +{ + return container_of(policy->governor, struct dbs_governor, gov); +} + /* Governor Per policy data */ struct dbs_data { - struct dbs_governor *gov; unsigned int min_sampling_rate; int usage_count; void *tuners; @@ -272,7 +276,7 @@ extern struct mutex cpufreq_governor_loc void gov_set_update_util(struct cpu_common_dbs_info *shared, unsigned int delay_us); void gov_cancel_work(struct cpu_common_dbs_info *shared); -void dbs_check_cpu(struct dbs_data *dbs_data, int cpu); +void dbs_check_cpu(struct cpufreq_policy *policy, int cpu); int cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event); void od_register_powersave_bias_handler(unsigned int (*f) (struct cpufreq_policy *, unsigned int, unsigned int), Index: linux-pm/drivers/cpufreq/cpufreq_conservative.c =================================================================== --- linux-pm.orig/drivers/cpufreq/cpufreq_conservative.c +++ linux-pm/drivers/cpufreq/cpufreq_conservative.c @@ -107,7 +107,7 @@ static unsigned int cs_dbs_timer(struct struct dbs_data *dbs_data = policy->governor_data; struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; - dbs_check_cpu(dbs_data, policy->cpu); + dbs_check_cpu(policy, policy->cpu); return delay_for_sampling_rate(cs_tuners->sampling_rate); } Index: linux-pm/drivers/cpufreq/cpufreq_governor.c =================================================================== --- linux-pm.orig/drivers/cpufreq/cpufreq_governor.c +++ linux-pm/drivers/cpufreq/cpufreq_governor.c @@ -28,28 +28,27 @@ EXPORT_SYMBOL_GPL(global_dbs_data); DEFINE_MUTEX(dbs_data_mutex); EXPORT_SYMBOL_GPL(dbs_data_mutex); -static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data) +static struct attribute_group *get_sysfs_attr(struct dbs_governor *gov) { - if (have_governor_per_policy()) - return dbs_data->gov->attr_group_gov_pol; - else - return dbs_data->gov->attr_group_gov_sys; + return have_governor_per_policy() ? + gov->attr_group_gov_pol : gov->attr_group_gov_sys; } -void dbs_check_cpu(struct dbs_data *dbs_data, int cpu) +void dbs_check_cpu(struct cpufreq_policy *policy, int cpu) { - struct cpu_dbs_info *cdbs = dbs_data->gov->get_cpu_cdbs(cpu); + struct dbs_governor *gov = dbs_governor_of(policy); + struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu); + struct dbs_data *dbs_data = policy->governor_data; struct od_dbs_tuners *od_tuners = dbs_data->tuners; struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; - struct cpufreq_policy *policy = cdbs->shared->policy; unsigned int sampling_rate; unsigned int max_load = 0; unsigned int ignore_nice; unsigned int j; - if (dbs_data->gov->governor == GOV_ONDEMAND) { + if (gov->governor == GOV_ONDEMAND) { struct od_cpu_dbs_info_s *od_dbs_info = - dbs_data->gov->get_cpu_dbs_info_s(cpu); + gov->get_cpu_dbs_info_s(cpu); /* * Sometimes, the ondemand governor uses an additional @@ -74,7 +73,7 @@ void dbs_check_cpu(struct dbs_data *dbs_ unsigned int load; int io_busy = 0; - j_cdbs = dbs_data->gov->get_cpu_cdbs(j); + j_cdbs = gov->get_cpu_cdbs(j); /* * For the purpose of ondemand, waiting for disk IO is @@ -82,7 +81,7 @@ void dbs_check_cpu(struct dbs_data *dbs_ * not that the system is actually idle. So do not add * the iowait time to the cpu idle time. */ - if (dbs_data->gov->governor == GOV_ONDEMAND) + 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); @@ -163,7 +162,7 @@ void dbs_check_cpu(struct dbs_data *dbs_ max_load = load; } - dbs_data->gov->gov_check_cpu(cpu, max_load); + gov->gov_check_cpu(cpu, max_load); } EXPORT_SYMBOL_GPL(dbs_check_cpu); @@ -171,14 +170,14 @@ void gov_set_update_util(struct cpu_comm unsigned int delay_us) { struct cpufreq_policy *policy = shared->policy; - struct dbs_data *dbs_data = policy->governor_data; + struct dbs_governor *gov = dbs_governor_of(policy); int cpu; shared->sample_delay_ns = delay_us * NSEC_PER_USEC; shared->time_stamp = ktime_get(); for_each_cpu(cpu, policy->cpus) { - struct cpu_dbs_info *cdbs = dbs_data->gov->get_cpu_cdbs(cpu); + struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu); cdbs->last_sample_time = 0; cpufreq_set_update_util_data(cpu, &cdbs->update_util); @@ -216,13 +215,15 @@ static void dbs_work_handler(struct work struct cpu_common_dbs_info *shared = container_of(work, struct cpu_common_dbs_info, work); struct cpufreq_policy *policy; + struct dbs_governor *gov; struct dbs_data *dbs_data; unsigned int sampling_rate, delay; policy = shared->policy; dbs_data = policy->governor_data; + gov = dbs_governor_of(policy); - if (dbs_data->gov->governor == GOV_CONSERVATIVE) { + if (gov->governor == GOV_CONSERVATIVE) { struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; sampling_rate = cs_tuners->sampling_rate; @@ -238,7 +239,7 @@ static void dbs_work_handler(struct work * parallel. */ mutex_lock(&shared->timer_mutex); - delay = dbs_data->gov->gov_dbs_timer(policy); + delay = gov->gov_dbs_timer(policy); shared->sample_delay_ns = jiffies_to_nsecs(delay); shared->time_stamp = ktime_get(); mutex_unlock(&shared->timer_mutex); @@ -282,9 +283,10 @@ static void dbs_update_util_handler(stru } static void set_sampling_rate(struct dbs_data *dbs_data, - unsigned int sampling_rate) + struct dbs_governor *gov, + unsigned int sampling_rate) { - if (dbs_data->gov->governor == GOV_CONSERVATIVE) { + if (gov->governor == GOV_CONSERVATIVE) { struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; cs_tuners->sampling_rate = sampling_rate; } else { @@ -340,7 +342,7 @@ static int cpufreq_governor_init(struct if (policy->governor_data) return -EBUSY; - gov = container_of(policy->governor, struct dbs_governor, gov); + gov = dbs_governor_of(policy); if (global_dbs_data) { if (WARN_ON(have_governor_per_policy())) return -EINVAL; @@ -362,7 +364,6 @@ static int cpufreq_governor_init(struct if (ret) goto free_dbs_data; - dbs_data->gov = gov; dbs_data->usage_count = 1; ret = gov->init(dbs_data, !policy->governor->initialized); @@ -377,7 +378,7 @@ static int cpufreq_governor_init(struct /* Bring kernel and HW constraints together */ dbs_data->min_sampling_rate = max(dbs_data->min_sampling_rate, MIN_LATENCY_MULTIPLIER * latency); - set_sampling_rate(dbs_data, max(dbs_data->min_sampling_rate, + set_sampling_rate(dbs_data, gov, max(dbs_data->min_sampling_rate, latency * LATENCY_MULTIPLIER)); if (!have_governor_per_policy()) @@ -386,7 +387,7 @@ static int cpufreq_governor_init(struct policy->governor_data = dbs_data; ret = sysfs_create_group(get_governor_parent_kobj(policy), - get_sysfs_attr(dbs_data)); + get_sysfs_attr(gov)); if (!ret) return 0; @@ -404,8 +405,8 @@ free_dbs_data: static int cpufreq_governor_exit(struct cpufreq_policy *policy) { + struct dbs_governor *gov = dbs_governor_of(policy); struct dbs_data *dbs_data = policy->governor_data; - struct dbs_governor *gov = dbs_data->gov; struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(policy->cpu); /* State should be equivalent to INIT */ @@ -414,7 +415,7 @@ static int cpufreq_governor_exit(struct if (!--dbs_data->usage_count) { sysfs_remove_group(get_governor_parent_kobj(policy), - get_sysfs_attr(dbs_data)); + get_sysfs_attr(gov)); policy->governor_data = NULL; @@ -433,8 +434,8 @@ static int cpufreq_governor_exit(struct static int cpufreq_governor_start(struct cpufreq_policy *policy) { + struct dbs_governor *gov = dbs_governor_of(policy); struct dbs_data *dbs_data = policy->governor_data; - struct dbs_governor *gov = dbs_data->gov; unsigned int sampling_rate, ignore_nice, j, cpu = policy->cpu; struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu); struct cpu_common_dbs_info *shared = cdbs->shared; @@ -501,8 +502,8 @@ static int cpufreq_governor_start(struct static int cpufreq_governor_stop(struct cpufreq_policy *policy) { - struct dbs_data *dbs_data = policy->governor_data; - struct cpu_dbs_info *cdbs = dbs_data->gov->get_cpu_cdbs(policy->cpu); + struct dbs_governor *gov = dbs_governor_of(policy); + struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(policy->cpu); struct cpu_common_dbs_info *shared = cdbs->shared; /* State should be equivalent to START */ @@ -517,8 +518,7 @@ static int cpufreq_governor_stop(struct static int cpufreq_governor_limits(struct cpufreq_policy *policy) { - struct dbs_data *dbs_data = policy->governor_data; - struct dbs_governor *gov = dbs_data->gov; + struct dbs_governor *gov = dbs_governor_of(policy); unsigned int cpu = policy->cpu; struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu); @@ -533,7 +533,7 @@ static int cpufreq_governor_limits(struc else if (policy->min > cdbs->shared->policy->cur) __cpufreq_driver_target(cdbs->shared->policy, policy->min, CPUFREQ_RELATION_L); - dbs_check_cpu(dbs_data, cpu); + dbs_check_cpu(policy, cpu); mutex_unlock(&cdbs->shared->timer_mutex); return 0; Index: linux-pm/drivers/cpufreq/cpufreq_ondemand.c =================================================================== --- linux-pm.orig/drivers/cpufreq/cpufreq_ondemand.c +++ linux-pm/drivers/cpufreq/cpufreq_ondemand.c @@ -207,7 +207,7 @@ static unsigned int od_dbs_timer(struct __cpufreq_driver_target(policy, dbs_info->freq_lo, CPUFREQ_RELATION_H); } else { - dbs_check_cpu(dbs_data, cpu); + dbs_check_cpu(policy, cpu); if (dbs_info->freq_lo) { /* Setup timer for SUB_SAMPLE */ dbs_info->sample_type = OD_SUB_SAMPLE;