From af926185231a6e30d11a6035410b61405e203c3b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 5 Feb 2016 03:16:08 +0100 Subject: [PATCH] cpufreq: governor: Put governor structure into common_dbs_data For the ondemand and conservative governors (generally, governors that use the common code in cpufreq_governor.c), there are two static data structures representing the governor, the struct governor structure (the interface to the cpufreq core) and the struct common_dbs_data one (the interface to the cpufreq_governor.c code). There's no fundamental reason why those two structures have to be separate. Moreover, if the struct governor one is included into struct common_dbs_data, it will be possible to reach the latter from the policy via its policy->governor pointer, so it won't be necessary to pass a separate pointer to it around. For this reason, embed struct governor in struct common_dbs_data. Signed-off-by: Rafael J. Wysocki Acked-by: Saravana Kannan Acked-by: Viresh Kumar --- drivers/cpufreq/cpufreq_conservative.c | 78 ++++++++++++++++++---------------- drivers/cpufreq/cpufreq_governor.h | 3 +- drivers/cpufreq/cpufreq_ondemand.c | 28 ++++++------ 3 files changed, 58 insertions(+), 51 deletions(-) diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 8f0c3db..4597f74 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -23,16 +23,6 @@ static DEFINE_PER_CPU(struct cs_cpu_dbs_info_s, cs_cpu_dbs_info); -static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy, - unsigned int event); - -static struct cpufreq_governor cpufreq_gov_conservative = { - .name = "conservative", - .governor = cs_cpufreq_governor_dbs, - .max_transition_latency = TRANSITION_LATENCY_LIMIT, - .owner = THIS_MODULE, -}; - static inline unsigned int get_freq_target(struct cs_dbs_tuners *cs_tuners, struct cpufreq_policy *policy) { @@ -122,30 +112,7 @@ static unsigned int cs_dbs_timer(struct cpufreq_policy *policy) } static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, - void *data) -{ - struct cpufreq_freqs *freq = data; - struct cs_cpu_dbs_info_s *dbs_info = - &per_cpu(cs_cpu_dbs_info, freq->cpu); - struct cpufreq_policy *policy = cpufreq_cpu_get_raw(freq->cpu); - - if (!policy) - return 0; - - /* policy isn't governed by conservative governor */ - if (policy->governor != &cpufreq_gov_conservative) - return 0; - - /* - * we only care if our internally tracked freq moves outside the 'valid' - * ranges of frequency available to us otherwise we do not change it - */ - if (dbs_info->requested_freq > policy->max - || dbs_info->requested_freq < policy->min) - dbs_info->requested_freq = freq->new; - - return 0; -} + void *data); static struct notifier_block cs_cpufreq_notifier_block = { .notifier_call = dbs_cpufreq_notifier, @@ -358,7 +325,16 @@ static void cs_exit(struct dbs_data *dbs_data, bool notify) define_get_cpu_dbs_routines(cs_cpu_dbs_info); +static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy, + unsigned int event); + static struct common_dbs_data cs_dbs_cdata = { + .gov = { + .name = "conservative", + .governor = cs_cpufreq_governor_dbs, + .max_transition_latency = TRANSITION_LATENCY_LIMIT, + .owner = THIS_MODULE, + }, .governor = GOV_CONSERVATIVE, .attr_group_gov_sys = &cs_attr_group_gov_sys, .attr_group_gov_pol = &cs_attr_group_gov_pol, @@ -370,20 +346,48 @@ static struct common_dbs_data cs_dbs_cdata = { .exit = cs_exit, }; +#define CPU_FREQ_GOV_CONSERVATIVE (&cs_dbs_cdata.gov) + static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event) { return cpufreq_governor_dbs(policy, &cs_dbs_cdata, event); } +static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, + void *data) +{ + struct cpufreq_freqs *freq = data; + struct cs_cpu_dbs_info_s *dbs_info = + &per_cpu(cs_cpu_dbs_info, freq->cpu); + struct cpufreq_policy *policy = cpufreq_cpu_get_raw(freq->cpu); + + if (!policy) + return 0; + + /* policy isn't governed by conservative governor */ + if (policy->governor != CPU_FREQ_GOV_CONSERVATIVE) + return 0; + + /* + * we only care if our internally tracked freq moves outside the 'valid' + * ranges of frequency available to us otherwise we do not change it + */ + if (dbs_info->requested_freq > policy->max + || dbs_info->requested_freq < policy->min) + dbs_info->requested_freq = freq->new; + + return 0; +} + static int __init cpufreq_gov_dbs_init(void) { - return cpufreq_register_governor(&cpufreq_gov_conservative); + return cpufreq_register_governor(CPU_FREQ_GOV_CONSERVATIVE); } static void __exit cpufreq_gov_dbs_exit(void) { - cpufreq_unregister_governor(&cpufreq_gov_conservative); + cpufreq_unregister_governor(CPU_FREQ_GOV_CONSERVATIVE); } MODULE_AUTHOR("Alexander Clouter "); @@ -395,7 +399,7 @@ MODULE_LICENSE("GPL"); #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE struct cpufreq_governor *cpufreq_default_governor(void) { - return &cpufreq_gov_conservative; + return CPU_FREQ_GOV_CONSERVATIVE; } fs_initcall(cpufreq_gov_dbs_init); diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index a9df62e..2fa3cf1 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -206,7 +206,8 @@ struct cs_dbs_tuners { /* Common Governor data across policies */ struct dbs_data; struct common_dbs_data { - /* Common across governors */ + struct cpufreq_governor gov; + #define GOV_ONDEMAND 0 #define GOV_CONSERVATIVE 1 int governor; diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index fac2f8f..836116cd 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -31,8 +31,6 @@ static DEFINE_PER_CPU(struct od_cpu_dbs_info_s, od_cpu_dbs_info); static struct od_ops od_ops; -static struct cpufreq_governor cpufreq_gov_ondemand; - static unsigned int default_powersave_bias; static void ondemand_powersave_bias_init_cpu(int cpu) @@ -541,7 +539,16 @@ static struct od_ops od_ops = { .freq_increase = dbs_freq_increase, }; +static int od_cpufreq_governor_dbs(struct cpufreq_policy *policy, + unsigned int event); + static struct common_dbs_data od_dbs_cdata = { + .gov = { + .name = "ondemand", + .governor = od_cpufreq_governor_dbs, + .max_transition_latency = TRANSITION_LATENCY_LIMIT, + .owner = THIS_MODULE, + }, .governor = GOV_ONDEMAND, .attr_group_gov_sys = &od_attr_group_gov_sys, .attr_group_gov_pol = &od_attr_group_gov_pol, @@ -554,19 +561,14 @@ static struct common_dbs_data od_dbs_cdata = { .exit = od_exit, }; +#define CPU_FREQ_GOV_ONDEMAND (&od_dbs_cdata.gov) + static int od_cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event) { return cpufreq_governor_dbs(policy, &od_dbs_cdata, event); } -static struct cpufreq_governor cpufreq_gov_ondemand = { - .name = "ondemand", - .governor = od_cpufreq_governor_dbs, - .max_transition_latency = TRANSITION_LATENCY_LIMIT, - .owner = THIS_MODULE, -}; - static void od_set_powersave_bias(unsigned int powersave_bias) { struct cpufreq_policy *policy; @@ -592,7 +594,7 @@ static void od_set_powersave_bias(unsigned int powersave_bias) policy = shared->policy; cpumask_or(&done, &done, policy->cpus); - if (policy->governor != &cpufreq_gov_ondemand) + if (policy->governor != CPU_FREQ_GOV_ONDEMAND) continue; dbs_data = policy->governor_data; @@ -620,12 +622,12 @@ EXPORT_SYMBOL_GPL(od_unregister_powersave_bias_handler); static int __init cpufreq_gov_dbs_init(void) { - return cpufreq_register_governor(&cpufreq_gov_ondemand); + return cpufreq_register_governor(CPU_FREQ_GOV_ONDEMAND); } static void __exit cpufreq_gov_dbs_exit(void) { - cpufreq_unregister_governor(&cpufreq_gov_ondemand); + cpufreq_unregister_governor(CPU_FREQ_GOV_ONDEMAND); } MODULE_AUTHOR("Venkatesh Pallipadi "); @@ -637,7 +639,7 @@ MODULE_LICENSE("GPL"); #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND struct cpufreq_governor *cpufreq_default_governor(void) { - return &cpufreq_gov_ondemand; + return CPU_FREQ_GOV_ONDEMAND; } fs_initcall(cpufreq_gov_dbs_init); -- 2.7.4