text
stringlengths 0
14.1k
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&sampling_rate.attr,
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&io_is_busy.attr,
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NULL
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};
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static struct attribute_group darkness_attr_group = {
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.attrs = darkness_attributes,
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.name = ""darkness"",
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};
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/************************** sysfs end ************************/
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static unsigned int adjust_cpufreq_frequency_target(struct cpufreq_policy *policy,
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struct cpufreq_frequency_table *table,
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unsigned int tmp_freq)
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{
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unsigned int i = 0, l_freq = 0, h_freq = 0, target_freq = 0;
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if (tmp_freq < policy->min)
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tmp_freq = policy->min;
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if (tmp_freq > policy->max)
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tmp_freq = policy->max;
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for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
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unsigned int freq = table[i].frequency;
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if (freq == CPUFREQ_ENTRY_INVALID) {
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continue;
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}
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if (freq < tmp_freq) {
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h_freq = freq;
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}
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if (freq == tmp_freq) {
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target_freq = freq;
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break;
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}
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if (freq > tmp_freq) {
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l_freq = freq;
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break;
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}
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}
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if (!target_freq) {
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if (policy->cur >= h_freq
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&& policy->cur <= l_freq)
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target_freq = policy->cur;
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else
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target_freq = l_freq;
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}
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return target_freq;
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}
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static void darkness_check_cpu(struct cpufreq_darkness_cpuinfo *this_darkness_cpuinfo)
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{
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struct cpufreq_policy *policy;
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unsigned int max_load = 0;
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unsigned int next_freq = 0;
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int io_busy = darkness_tuners_ins.io_is_busy;
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unsigned int cpu = this_darkness_cpuinfo->cpu;
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unsigned int j;
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policy = this_darkness_cpuinfo->cur_policy;
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if (!policy->cur)
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return;
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for_each_cpu(j, policy->cpus) {
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struct cpufreq_darkness_cpuinfo *j_darkness_cpuinfo;
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u64 cur_wall_time, cur_idle_time;
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unsigned int idle_time, wall_time;
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unsigned int load;
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j_darkness_cpuinfo = &per_cpu(od_darkness_cpuinfo, j);
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if (!j_darkness_cpuinfo->governor_enabled)
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continue;
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cur_idle_time = get_cpu_idle_time(j, &cur_wall_time, io_busy);
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wall_time = (unsigned int)
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(cur_wall_time - j_darkness_cpuinfo->prev_cpu_wall);
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idle_time = (unsigned int)
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(cur_idle_time - j_darkness_cpuinfo->prev_cpu_idle);
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if (j == cpu) {
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j_darkness_cpuinfo->prev_cpu_wall = cur_wall_time;
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j_darkness_cpuinfo->prev_cpu_idle = cur_idle_time;
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}
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if (unlikely(!wall_time || wall_time < idle_time))
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continue;
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load = 100 * (wall_time - idle_time) / wall_time;
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if (load > max_load)
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max_load = load;
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}
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cpufreq_notify_utilization(policy, max_load);
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/* CPUs Online Scale Frequency*/
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next_freq = adjust_cpufreq_frequency_target(policy, this_darkness_cpuinfo->freq_table,
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