unsigned int last_index;
u64 *time_in_state;
unsigned int *freq_table;
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
unsigned int *trans_table;
-#endif
};
static int cpufreq_stats_update(struct cpufreq_stats *stats)
unsigned int count = stats->max_state;
memset(stats->time_in_state, 0, count * sizeof(u64));
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
memset(stats->trans_table, 0, count * count * sizeof(int));
-#endif
stats->last_time = get_jiffies_64();
stats->total_trans = 0;
}
return count;
}
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
{
struct cpufreq_stats *stats = policy->stats;
return len;
}
cpufreq_freq_attr_ro(trans_table);
-#endif
cpufreq_freq_attr_ro(total_trans);
cpufreq_freq_attr_ro(time_in_state);
&total_trans.attr,
&time_in_state.attr,
&reset.attr,
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
&trans_table.attr,
-#endif
NULL
};
static struct attribute_group stats_attr_group = {
alloc_size = count * sizeof(int) + count * sizeof(u64);
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
alloc_size += count * count * sizeof(int);
-#endif
/* Allocate memory for time_in_state/freq_table/trans_table in one go */
stats->time_in_state = kzalloc(alloc_size, GFP_KERNEL);
stats->freq_table = (unsigned int *)(stats->time_in_state + count);
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
stats->trans_table = stats->freq_table + count;
-#endif
stats->max_state = count;
cpufreq_stats_update(stats);
stats->last_index = new_index;
-#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
stats->trans_table[old_index * stats->max_state + new_index]++;
-#endif
stats->total_trans++;
}