From 8c8f77fd0719a079450f59debed4f69ede825adb Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 21 Feb 2016 00:51:27 +0100 Subject: cpufreq: governor: Move per-CPU data to the common code After previous changes there is only one piece of code in the ondemand governor making references to per-CPU data structures, but it can be easily modified to avoid doing that, so modify it accordingly and move the definition of per-CPU data used by the ondemand and conservative governors to the common code. Next, change that code to access the per-CPU data structures directly rather than via a governor callback. This causes the ->get_cpu_cdbs governor callback to become unnecessary, so drop it along with the macro and function definitions related to it. Finally, drop the definitions of struct od_cpu_dbs_info_s and struct cs_cpu_dbs_info_s that aren't necessary any more. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index ffffda2..5d1edc5 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -32,10 +32,6 @@ static inline struct cs_policy_dbs_info *to_dbs_info(struct policy_dbs_info *pol #define DEF_SAMPLING_DOWN_FACTOR (1) #define MAX_SAMPLING_DOWN_FACTOR (10) -static DEFINE_PER_CPU(struct cs_cpu_dbs_info_s, cs_cpu_dbs_info); - -static struct dbs_governor cs_dbs_gov; - static inline unsigned int get_freq_target(struct cs_dbs_tuners *cs_tuners, struct cpufreq_policy *policy) { @@ -193,7 +189,7 @@ static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data, dbs_data->ignore_nice_load = input; /* we need to re-evaluate prev_cpu_idle */ - gov_update_cpu_data(&cs_dbs_gov, dbs_data); + gov_update_cpu_data(dbs_data); return count; } @@ -306,8 +302,6 @@ static void cs_start(struct cpufreq_policy *policy) dbs_info->requested_freq = policy->cur; } -define_get_cpu_dbs_routines(cs_cpu_dbs_info); - static struct dbs_governor cs_dbs_gov = { .gov = { .name = "conservative", @@ -316,7 +310,6 @@ static struct dbs_governor cs_dbs_gov = { .owner = THIS_MODULE, }, .kobj_type = { .default_attrs = cs_attributes }, - .get_cpu_cdbs = get_cpu_cdbs, .gov_dbs_timer = cs_dbs_timer, .alloc = cs_alloc, .free = cs_free, diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 6cbc846..75217b8 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -22,6 +22,8 @@ #include "cpufreq_governor.h" +static DEFINE_PER_CPU(struct cpu_dbs_info, cpu_dbs); + DEFINE_MUTEX(dbs_data_mutex); EXPORT_SYMBOL_GPL(dbs_data_mutex); @@ -82,7 +84,6 @@ EXPORT_SYMBOL_GPL(store_sampling_rate); /** * gov_update_cpu_data - Update CPU load data. - * @gov: Governor whose data is to be updated. * @dbs_data: Top-level governor data pointer. * * Update CPU load data for all CPUs in the domain governed by @dbs_data @@ -91,7 +92,7 @@ EXPORT_SYMBOL_GPL(store_sampling_rate); * * Call under the @dbs_data mutex. */ -void gov_update_cpu_data(struct dbs_governor *gov, struct dbs_data *dbs_data) +void gov_update_cpu_data(struct dbs_data *dbs_data) { struct policy_dbs_info *policy_dbs; @@ -99,7 +100,7 @@ void gov_update_cpu_data(struct dbs_governor *gov, struct dbs_data *dbs_data) unsigned int j; for_each_cpu(j, policy_dbs->policy->cpus) { - struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j); + struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j); j_cdbs->prev_cpu_idle = get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall, dbs_data->io_is_busy); @@ -164,7 +165,6 @@ static const struct sysfs_ops governor_sysfs_ops = { 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; unsigned int ignore_nice = dbs_data->ignore_nice_load; @@ -187,13 +187,11 @@ unsigned int dbs_update(struct cpufreq_policy *policy) /* Get Absolute Load */ for_each_cpu(j, policy->cpus) { - struct cpu_dbs_info *j_cdbs; + struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j); u64 cur_wall_time, cur_idle_time; unsigned int idle_time, wall_time; unsigned int load; - j_cdbs = gov->get_cpu_cdbs(j); - cur_idle_time = get_cpu_idle_time(j, &cur_wall_time, io_busy); wall_time = cur_wall_time - j_cdbs->prev_cpu_wall; @@ -268,14 +266,13 @@ void gov_set_update_util(struct policy_dbs_info *policy_dbs, unsigned int delay_us) { struct cpufreq_policy *policy = policy_dbs->policy; - struct dbs_governor *gov = dbs_governor_of(policy); int cpu; gov_update_sample_delay(policy_dbs, delay_us); policy_dbs->last_sample_time = 0; for_each_cpu(cpu, policy->cpus) { - struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu); + struct cpu_dbs_info *cdbs = &per_cpu(cpu_dbs, cpu); cpufreq_set_update_util_data(cpu, &cdbs->update_util); } @@ -398,7 +395,7 @@ static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *poli /* Set policy_dbs for all CPUs, online+offline */ for_each_cpu(j, policy->related_cpus) { - struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j); + struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j); j_cdbs->policy_dbs = policy_dbs; j_cdbs->update_util.func = dbs_update_util_handler; @@ -406,17 +403,15 @@ static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *poli return policy_dbs; } -static void free_policy_dbs_info(struct cpufreq_policy *policy, +static void free_policy_dbs_info(struct policy_dbs_info *policy_dbs, struct dbs_governor *gov) { - struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(policy->cpu); - struct policy_dbs_info *policy_dbs = cdbs->policy_dbs; int j; mutex_destroy(&policy_dbs->timer_mutex); - for_each_cpu(j, policy->related_cpus) { - struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j); + for_each_cpu(j, policy_dbs->policy->related_cpus) { + struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j); j_cdbs->policy_dbs = NULL; j_cdbs->update_util.func = NULL; @@ -507,7 +502,7 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy) kfree(dbs_data); free_policy_dbs_info: - free_policy_dbs_info(policy, gov); + free_policy_dbs_info(policy_dbs, gov); return ret; } @@ -538,7 +533,7 @@ static int cpufreq_governor_exit(struct cpufreq_policy *policy) policy->governor_data = NULL; } - free_policy_dbs_info(policy, gov); + free_policy_dbs_info(policy_dbs, gov); return 0; } @@ -561,7 +556,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy) io_busy = dbs_data->io_is_busy; for_each_cpu(j, policy->cpus) { - struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j); + struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j); unsigned int prev_load; j_cdbs->prev_cpu_idle = get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall, io_busy); diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 354e0d3..58749da 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -41,13 +41,6 @@ /* Ondemand Sampling types */ enum {OD_NORMAL_SAMPLE, OD_SUB_SAMPLE}; -/* create helper routines */ -#define define_get_cpu_dbs_routines(_dbs_info) \ -static struct cpu_dbs_info *get_cpu_cdbs(int cpu) \ -{ \ - return &per_cpu(_dbs_info, cpu).cdbs; \ -} - /* * Abbreviations: * dbs: used as a shortform for demand based switching It helps to keep variable @@ -155,14 +148,6 @@ struct cpu_dbs_info { struct policy_dbs_info *policy_dbs; }; -struct od_cpu_dbs_info_s { - struct cpu_dbs_info cdbs; -}; - -struct cs_cpu_dbs_info_s { - struct cpu_dbs_info cdbs; -}; - /* Per policy Governors sysfs tunables */ struct od_dbs_tuners { unsigned int powersave_bias; @@ -184,7 +169,6 @@ struct dbs_governor { */ struct dbs_data *gdbs_data; - struct cpu_dbs_info *(*get_cpu_cdbs)(int cpu); unsigned int (*gov_dbs_timer)(struct cpufreq_policy *policy); struct policy_dbs_info *(*alloc)(void); void (*free)(struct policy_dbs_info *policy_dbs); @@ -213,5 +197,5 @@ void od_register_powersave_bias_handler(unsigned int (*f) void od_unregister_powersave_bias_handler(void); ssize_t store_sampling_rate(struct dbs_data *dbs_data, const char *buf, size_t count); -void gov_update_cpu_data(struct dbs_governor *gov, struct dbs_data *dbs_data); +void gov_update_cpu_data(struct dbs_data *dbs_data); #endif /* _CPUFREQ_GOVERNOR_H */ diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index cdf4316..acd8027 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -28,9 +28,6 @@ #define MIN_FREQUENCY_UP_THRESHOLD (11) #define MAX_FREQUENCY_UP_THRESHOLD (100) -static DEFINE_PER_CPU(struct od_cpu_dbs_info_s, od_cpu_dbs_info); - -static struct dbs_governor od_dbs_gov; static struct od_ops od_ops; static unsigned int default_powersave_bias; @@ -222,7 +219,7 @@ static ssize_t store_io_is_busy(struct dbs_data *dbs_data, const char *buf, dbs_data->io_is_busy = !!input; /* we need to re-evaluate prev_cpu_idle */ - gov_update_cpu_data(&od_dbs_gov, dbs_data); + gov_update_cpu_data(dbs_data); return count; } @@ -289,7 +286,7 @@ static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data, dbs_data->ignore_nice_load = input; /* we need to re-evaluate prev_cpu_idle */ - gov_update_cpu_data(&od_dbs_gov, dbs_data); + gov_update_cpu_data(dbs_data); return count; } @@ -413,8 +410,6 @@ static void od_start(struct cpufreq_policy *policy) ondemand_powersave_bias_init(policy); } -define_get_cpu_dbs_routines(od_cpu_dbs_info); - static struct od_ops od_ops = { .powersave_bias_target = generic_powersave_bias_target, }; @@ -427,7 +422,6 @@ static struct dbs_governor od_dbs_gov = { .owner = THIS_MODULE, }, .kobj_type = { .default_attrs = od_attributes }, - .get_cpu_cdbs = get_cpu_cdbs, .gov_dbs_timer = od_dbs_timer, .alloc = od_alloc, .free = od_free, @@ -440,9 +434,6 @@ static struct dbs_governor od_dbs_gov = { static void od_set_powersave_bias(unsigned int powersave_bias) { - struct cpufreq_policy *policy; - struct dbs_data *dbs_data; - struct od_dbs_tuners *od_tuners; unsigned int cpu; cpumask_t done; @@ -451,21 +442,24 @@ static void od_set_powersave_bias(unsigned int powersave_bias) get_online_cpus(); for_each_online_cpu(cpu) { + struct cpufreq_policy *policy; struct policy_dbs_info *policy_dbs; + struct dbs_data *dbs_data; + struct od_dbs_tuners *od_tuners; if (cpumask_test_cpu(cpu, &done)) continue; - policy_dbs = per_cpu(od_cpu_dbs_info, cpu).cdbs.policy_dbs; + policy = cpufreq_cpu_get_raw(cpu); + if (!policy || policy->governor != CPU_FREQ_GOV_ONDEMAND) + continue; + + policy_dbs = policy->governor_data; if (!policy_dbs) continue; - policy = policy_dbs->policy; cpumask_or(&done, &done, policy->cpus); - if (policy->governor != CPU_FREQ_GOV_ONDEMAND) - continue; - dbs_data = policy_dbs->dbs_data; od_tuners = dbs_data->tuners; od_tuners->powersave_bias = default_powersave_bias; -- cgit v0.10.2