cpufreq: stats: Mark few conditionals with unlikely() (4958b46e) · Commits · 戴 / test

Since this will be part of the scheduler's hotpath in some cases, use unlikely() for few of the obvious conditionals. Signed-off-by:

drivers/cpufreq/cpufreq_stats.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -260,7 +260,7 @@ void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
		struct cpufreq_stats *stats = policy->stats;
		int old_index, new_index;

		if (!stats)
		if (unlikely(!stats))
		return;

		if (unlikely(READ_ONCE(stats->reset_pending)))
		@@ -270,7 +270,7 @@ void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
		new_index = freq_table_get_index(stats, new_freq);

		/* We can't do stats->time_in_state[-1]= .. */
		if (old_index == -1 \|\| new_index == -1 \|\| old_index == new_index)
		if (unlikely(old_index == -1 \|\| new_index == -1 \|\| old_index == new_index))
		return;

		cpufreq_stats_update(stats, stats->last_time);