[RFC PATCH v2 3/6] cpufreq: Add Active Stats calls tracking frequency changes
From: Lukasz Luba <lukasz.luba@arm.com>
Date: 2021-07-06 13:18:55
Also in:
lkml
Subsystem:
cpu frequency scaling framework, the rest · Maintainers:
"Rafael J. Wysocki", Viresh Kumar, Linus Torvalds
The Active Stats framework tracks and accounts the activity of the CPU for each performance level. It accounts the real residency, when the CPU was not idle, at a given performance level. This patch adds needed calls which provide the CPU frequency transition events to the Active Stats framework. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> --- drivers/cpufreq/cpufreq.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 802abc925b2a..d79cb9310572 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c@@ -14,6 +14,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/active_stats.h> #include <linux/cpu.h> #include <linux/cpufreq.h> #include <linux/cpu_cooling.h>
@@ -387,6 +388,8 @@ static void cpufreq_notify_transition(struct cpufreq_policy *policy, cpufreq_stats_record_transition(policy, freqs->new); policy->cur = freqs->new; + + active_stats_cpu_freq_change(policy->cpu, freqs->new); } }
@@ -2085,6 +2088,8 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy, policy->cpuinfo.max_freq); cpufreq_stats_record_transition(policy, freq); + active_stats_cpu_freq_fast_change(policy->cpu, freq); + if (trace_cpu_frequency_enabled()) { for_each_cpu(cpu, policy->cpus) trace_cpu_frequency(freq, cpu);
--
2.17.1