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authorViresh Kumar <viresh.kumar@linaro.org>2020-10-05 10:56:03 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-10-05 16:13:43 +0300
commit4958b46efb6df20fa3abb3a4d007515485f6af16 (patch)
tree9dd9db7d96a3386475e7309344b8bbc45bb6503e /drivers/cpufreq
parent381abb942a392377f614b62c87692f4f2e8aa59b (diff)
downloadlinux-4958b46efb6df20fa3abb3a4d007515485f6af16.tar.xz
cpufreq: stats: Mark few conditionals with unlikely()
Since this will be part of the scheduler's hotpath in some cases, use unlikely() for few of the obvious conditionals. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq_stats.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 45a067855367..bba04da3a278 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -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);