[PATCH] cpufreq_times_record_transition() is not called when fast switch is enabled, leading /proc/[pid]/time_in_state to attribute all time on a cluster to a single frequency. To fix this, add a call to cpufreq_times_record_transition() in the fast switch path.

From: hongchengwen
Date: Mon Oct 10 2022 - 03:32:05 EST


From: zhengding chen <chenzhengding@xxxxxxxx>

Test: /proc/[pid]/time_in_state shows times for more than one freq per
cluster

Signed-off-by: zhengding chen <chenzhengding@xxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 69b3d61..1caaf63 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2128,6 +2128,7 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
arch_set_freq_scale(policy->related_cpus, freq,
policy->cpuinfo.max_freq);
cpufreq_stats_record_transition(policy, freq);
+ cpufreq_times_record_transition(policy, freq);

if (trace_cpu_frequency_enabled()) {
for_each_cpu(cpu, policy->cpus)
--
2.7.4

________________________________
OPPO

本电子邮件及其附件含有OPPO公司的保密信息,仅限于邮件指明的收件人使用(包含个人及群组)。禁止任何人在未经授权的情况下以任何形式使用。如果您错收了本邮件,请立即以电子邮件通知发件人并删除本邮件及其附件。

This e-mail and its attachments contain confidential information from OPPO, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!