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cpufreq: stats: Remove locking

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The locking isn't required anymore as stats can get updated only from
one place at a time. Remove it.

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 2020-10-05 13:26:02 +05:30 committed by Rafael J. Wysocki
parent 40c3bd4cfa
commit 381abb942a
1 changed files with 0 additions and 6 deletions
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6
drivers/cpufreq/cpufreq_stats.c
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@ -19,7 +19,6 @@ struct cpufreq_stats {
unsigned int state_num;
unsigned int last_index;
u64 *time_in_state;
spinlock_t lock;
unsigned int *freq_table;
unsigned int *trans_table;
@ -41,7 +40,6 @@ static void cpufreq_stats_reset_table(struct cpufreq_stats *stats)
{
unsigned int count = stats->max_state;
spin_lock(&stats->lock);
memset(stats->time_in_state, 0, count * sizeof(u64));
memset(stats->trans_table, 0, count * count * sizeof(int));
stats->last_time = get_jiffies_64();
@ -50,7 +48,6 @@ static void cpufreq_stats_reset_table(struct cpufreq_stats *stats)
/* Adjust for the time elapsed since reset was requested */
WRITE_ONCE(stats->reset_pending, 0);
cpufreq_stats_update(stats, READ_ONCE(stats->reset_time));
spin_unlock(&stats->lock);
}
static ssize_t show_total_trans(struct cpufreq_policy *policy, char *buf)
@ -244,7 +241,6 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
stats->state_num = i;
stats->last_time = get_jiffies_64();
stats->last_index = freq_table_get_index(stats, policy->cur);
spin_lock_init(&stats->lock);
policy->stats = stats;
ret = sysfs_create_group(&policy->kobj, &stats_attr_group);
@ -277,11 +273,9 @@ void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
if (old_index == -1 || new_index == -1 || old_index == new_index)
return;
spin_lock(&stats->lock);
cpufreq_stats_update(stats, stats->last_time);
stats->last_index = new_index;
stats->trans_table[old_index * stats->max_state + new_index]++;
stats->total_trans++;
spin_unlock(&stats->lock);
}