#include <linux/init.h>
#include <linux/cpufreq.h>
+#define dprintk(msg...) \
+ cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "freq-table", msg)
+
/*********************************************************************
* FREQUENCY TABLE HELPERS *
*********************************************************************/
{
unsigned int min_freq = ~0;
unsigned int max_freq = 0;
- unsigned int i = 0;
+ unsigned int i;
for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
unsigned int freq = table[i].frequency;
- if (freq == CPUFREQ_ENTRY_INVALID)
+ if (freq == CPUFREQ_ENTRY_INVALID) {
+ dprintk("table entry %u is invalid, skipping\n", i);
+
continue;
+ }
+ dprintk("table entry %u: %u kHz, %u index\n",
+ i, freq, table[i].index);
if (freq < min_freq)
min_freq = freq;
if (freq > max_freq)
struct cpufreq_frequency_table *table)
{
unsigned int next_larger = ~0;
- unsigned int i = 0;
+ unsigned int i;
unsigned int count = 0;
+ dprintk("request for verification of policy (%u - %u kHz) for cpu %u\n",
+ policy->min, policy->max, policy->cpu);
+
if (!cpu_online(policy->cpu))
return -EINVAL;
- cpufreq_verify_within_limits(policy,
- policy->cpuinfo.min_freq,
+ cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
if (!count)
policy->max = next_larger;
- cpufreq_verify_within_limits(policy,
- policy->cpuinfo.min_freq,
+ cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
+ dprintk("verification lead to (%u - %u kHz) for cpu %u\n",
+ policy->min, policy->max, policy->cpu);
+
return 0;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
unsigned int relation,
unsigned int *index)
{
- struct cpufreq_frequency_table optimal = { .index = ~0, };
- struct cpufreq_frequency_table suboptimal = { .index = ~0, };
+ struct cpufreq_frequency_table optimal = {
+ .index = ~0,
+ .frequency = 0,
+ };
+ struct cpufreq_frequency_table suboptimal = {
+ .index = ~0,
+ .frequency = 0,
+ };
unsigned int i;
+ dprintk("request for target %u kHz (relation: %u) for cpu %u\n",
+ target_freq, relation, policy->cpu);
+
switch (relation) {
case CPUFREQ_RELATION_H:
- optimal.frequency = 0;
suboptimal.frequency = ~0;
break;
case CPUFREQ_RELATION_L:
optimal.frequency = ~0;
- suboptimal.frequency = 0;
break;
}
*index = suboptimal.index;
} else
*index = optimal.index;
-
+
+ dprintk("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
+ table[*index].index);
+
return 0;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target);
}
struct freq_attr cpufreq_freq_attr_scaling_available_freqs = {
- .attr = { .name = "scaling_available_frequencies", .mode = 0444 },
+ .attr = { .name = "scaling_available_frequencies",
+ .mode = 0444,
+ .owner=THIS_MODULE
+ },
.show = show_available_freqs,
};
EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
* if you use these, you must assure that the frequency table is valid
* all the time between get_attr and put_attr!
*/
-void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
+void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
unsigned int cpu)
{
+ dprintk("setting show_table for cpu %u to %p\n", cpu, table);
show_table[cpu] = table;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr);
void cpufreq_frequency_table_put_attr(unsigned int cpu)
{
+ dprintk("clearing show_table for cpu %u\n", cpu);
show_table[cpu] = NULL;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr);
+struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu)
+{
+ return show_table[cpu];
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table);
MODULE_AUTHOR ("Dominik Brodowski <linux@brodo.de>");
MODULE_DESCRIPTION ("CPUfreq frequency table helpers");