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cpufreq: conservative: remove 'enable' field 

Conservative governor has its own 'enable' field to check if
conservative governor is used for a CPU or not

This can be checked by policy->governor with 'cpufreq_gov_conservative'
and so this field can be dropped.

Because its not guaranteed that dbs_info->cdbs.shared will a valid
pointer for all CPUs (will be NULL for CPUs that don't use
ondemand/conservative governors), we can't use it anymore. Lets get
policy with cpufreq_cpu_get_raw() instead.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2015-09-08 07:10:34 +05:30 committed by Rafael J. Wysocki
parent 78ce6dbfa3
commit 03d5eec000
3 changed files with 19 additions and 25 deletions
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31
drivers/cpufreq/cpufreq_conservative.c
View File

@ -23,6 +23,19 @@
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);
#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
static
#endif
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)
{
@ -119,12 +132,14 @@ static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
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;
struct cpufreq_policy *policy = cpufreq_cpu_get_raw(freq->cpu);
if (!dbs_info->enable)
if (!policy)
return 0;
policy = dbs_info->cdbs.shared->policy;
/* 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'
@ -367,16 +382,6 @@ static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy,
return cpufreq_governor_dbs(policy, &cs_dbs_cdata, event);
}
#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
static
#endif
struct cpufreq_governor cpufreq_gov_conservative = {
.name = "conservative",
.governor = cs_cpufreq_governor_dbs,
.max_transition_latency = TRANSITION_LATENCY_LIMIT,
.owner = THIS_MODULE,
};
static int __init cpufreq_gov_dbs_init(void)
{
return cpufreq_register_governor(&cpufreq_gov_conservative);

12
drivers/cpufreq/cpufreq_governor.c
View File

@ -463,7 +463,6 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy,
cdata->get_cpu_dbs_info_s(cpu);
cs_dbs_info->down_skip = 0;
cs_dbs_info->enable = 1;
cs_dbs_info->requested_freq = policy->cur;
} else {
struct od_ops *od_ops = cdata->gov_ops;
@ -482,9 +481,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy,
static int cpufreq_governor_stop(struct cpufreq_policy *policy,
struct dbs_data *dbs_data)
{
struct common_dbs_data *cdata = dbs_data->cdata;
unsigned int cpu = policy->cpu;
struct cpu_dbs_info *cdbs = cdata->get_cpu_cdbs(cpu);
struct cpu_dbs_info *cdbs = dbs_data->cdata->get_cpu_cdbs(policy->cpu);
struct cpu_common_dbs_info *shared = cdbs->shared;
/* State should be equivalent to START */
@ -493,13 +490,6 @@ static int cpufreq_governor_stop(struct cpufreq_policy *policy,
gov_cancel_work(dbs_data, policy);
if (cdata->governor == GOV_CONSERVATIVE) {
struct cs_cpu_dbs_info_s *cs_dbs_info =
cdata->get_cpu_dbs_info_s(cpu);
cs_dbs_info->enable = 0;
}
shared->policy = NULL;
mutex_destroy(&shared->timer_mutex);
return 0;

1
drivers/cpufreq/cpufreq_governor.h
View File

@ -170,7 +170,6 @@ struct cs_cpu_dbs_info_s {
struct cpu_dbs_info cdbs;
unsigned int down_skip;
unsigned int requested_freq;
unsigned int enable:1;
};
/* Per policy Governors sysfs tunables */