diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpufreq.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/kernel/cpufreq.c b/kernel/cpufreq.c index b28ebbd7ef3b..4de004bf4aa6 100644 --- a/kernel/cpufreq.c +++ b/kernel/cpufreq.c @@ -1582,191 +1582,3 @@ EXPORT_SYMBOL_GPL(cpufreq_restore); #else #define cpufreq_restore() do {} while (0) #endif /* CONFIG_PM */ - - -/********************************************************************* - * FREQUENCY TABLE HELPERS * - *********************************************************************/ - -int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *table) -{ - unsigned int min_freq = ~0; - unsigned int max_freq = 0; - unsigned int i = 0; - - for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { - unsigned int freq = table[i].frequency; - if (freq == CPUFREQ_ENTRY_INVALID) - continue; - if (freq < min_freq) - min_freq = freq; - if (freq > max_freq) - max_freq = freq; - } - - policy->min = policy->cpuinfo.min_freq = min_freq; - policy->max = policy->cpuinfo.max_freq = max_freq; - - if (policy->min == ~0) - return -EINVAL; - else - return 0; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_cpuinfo); - - -int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *table) -{ - unsigned int next_larger = ~0; - unsigned int i = 0; - unsigned int count = 0; - - if (!cpu_online(policy->cpu)) - return -EINVAL; - - cpufreq_verify_within_limits(policy, - policy->cpuinfo.min_freq, - policy->cpuinfo.max_freq); - - for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { - unsigned int freq = table[i].frequency; - if (freq == CPUFREQ_ENTRY_INVALID) - continue; - if ((freq >= policy->min) && (freq <= policy->max)) - count++; - else if ((next_larger > freq) && (freq > policy->max)) - next_larger = freq; - } - - if (!count) - policy->max = next_larger; - - cpufreq_verify_within_limits(policy, - policy->cpuinfo.min_freq, - policy->cpuinfo.max_freq); - - return 0; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify); - - -int cpufreq_frequency_table_setpolicy(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *table, - unsigned int *index) -{ - struct cpufreq_frequency_table optimal = { .index = ~0, }; - unsigned int i; - - switch (policy->policy) { - case CPUFREQ_POLICY_PERFORMANCE: - optimal.frequency = 0; - break; - case CPUFREQ_POLICY_POWERSAVE: - optimal.frequency = ~0; - break; - } - - if (!cpu_online(policy->cpu)) - return -EINVAL; - - for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { - unsigned int freq = table[i].frequency; - if (freq == CPUFREQ_ENTRY_INVALID) - continue; - if ((freq < policy->min) || (freq > policy->max)) - continue; - switch(policy->policy) { - case CPUFREQ_POLICY_PERFORMANCE: - if (optimal.frequency <= freq) { - optimal.frequency = freq; - optimal.index = i; - } - break; - case CPUFREQ_POLICY_POWERSAVE: - if (optimal.frequency >= freq) { - optimal.frequency = freq; - optimal.index = i; - } - break; - } - } - if (optimal.index > i) - return -EINVAL; - - *index = optimal.index; - - return 0; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_setpolicy); - -int cpufreq_frequency_table_target(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *table, - unsigned int target_freq, - unsigned int relation, - unsigned int *index) -{ - struct cpufreq_frequency_table optimal = { .index = ~0, }; - struct cpufreq_frequency_table suboptimal = { .index = ~0, }; - unsigned int i; - - switch (relation) { - case CPUFREQ_RELATION_H: - optimal.frequency = 0; - suboptimal.frequency = ~0; - break; - case CPUFREQ_RELATION_L: - optimal.frequency = ~0; - suboptimal.frequency = 0; - break; - } - - if (!cpu_online(policy->cpu)) - return -EINVAL; - - for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { - unsigned int freq = table[i].frequency; - if (freq == CPUFREQ_ENTRY_INVALID) - continue; - if ((freq < policy->min) || (freq > policy->max)) - continue; - switch(relation) { - case CPUFREQ_RELATION_H: - if (freq <= target_freq) { - if (freq >= optimal.frequency) { - optimal.frequency = freq; - optimal.index = i; - } - } else { - if (freq <= suboptimal.frequency) { - suboptimal.frequency = freq; - suboptimal.index = i; - } - } - break; - case CPUFREQ_RELATION_L: - if (freq >= target_freq) { - if (freq <= optimal.frequency) { - optimal.frequency = freq; - optimal.index = i; - } - } else { - if (freq >= suboptimal.frequency) { - suboptimal.frequency = freq; - suboptimal.index = i; - } - } - break; - } - } - if (optimal.index > i) { - if (suboptimal.index > i) - return -EINVAL; - *index = suboptimal.index; - } else - *index = optimal.index; - - return 0; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target); |