linux-kernel - [PATCH V3 4/5] cpufreq: stats: Enable stats for fast-switch as well

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Message-Id: <2773c97ebdbd86b58b5577f6d060110a21b23e29.1601884370.git.viresh.kumar@linaro.org>
Date:   Mon,  5 Oct 2020 13:26:04 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Lukasz Luba <lukasz.luba@....com>, cristian.marussi@....com,
        sudeep.holla@....com, linux-kernel@...r.kernel.org
Subject: [PATCH V3 4/5] cpufreq: stats: Enable stats for fast-switch as well

Now that all the blockers are gone for enabling stats in fast-switching
case, enable it.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/cpufreq/cpufreq.c       | 4 ++++
 drivers/cpufreq/cpufreq_stats.c | 6 ------
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 2ea245a6c0c0..2d0e2e464b14 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2072,8 +2072,12 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 	freq = cpufreq_driver->fast_switch(policy, target_freq);
 
+	if (!freq)
+		return 0;
+
 	arch_set_freq_scale(policy->related_cpus, freq,
 			    policy->cpuinfo.max_freq);
+	cpufreq_stats_record_transition(policy, freq);
 
 	return freq;
 }
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index bba04da3a278..8e7d64f34041 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -69,9 +69,6 @@ static ssize_t show_time_in_state(struct cpufreq_policy *policy, char *buf)
 	ssize_t len = 0;
 	int i;
 
-	if (policy->fast_switch_enabled)
-		return 0;
-
 	for (i = 0; i < stats->state_num; i++) {
 		if (pending) {
 			if (i == stats->last_index)
@@ -115,9 +112,6 @@ static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
 	ssize_t len = 0;
 	int i, j, count;
 
-	if (policy->fast_switch_enabled)
-		return 0;
-
 	len += scnprintf(buf + len, PAGE_SIZE - len, "   From  :    To\n");
 	len += scnprintf(buf + len, PAGE_SIZE - len, "         : ");
 	for (i = 0; i < stats->state_num; i++) {
-- 
2.25.0.rc1.19.g042ed3e048af