Messages in this thread Patch in this message | | | From | Benjamin Gaignard <> | Subject | [RFC 2/3] cpufreq: governor: Use minimum load QoS | Date | Tue, 26 May 2020 17:16:18 +0200 |
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Make sure that the returned load is above the system-wide minimum load QoS. Devices could set this specific QoS to inform governors about their need in terms of CPU load when computing it from idle time isn't accurate.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> --- drivers/cpufreq/cpufreq_governor.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index f99ae45efaea..1494e5e4c788 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -118,6 +118,7 @@ unsigned int dbs_update(struct cpufreq_policy *policy) unsigned int ignore_nice = dbs_data->ignore_nice_load; unsigned int max_load = 0, idle_periods = UINT_MAX; unsigned int sampling_rate, io_busy, j; + unsigned int qos_min_load; /* * Sometimes governors may use an additional multiplier to increase @@ -225,6 +226,10 @@ unsigned int dbs_update(struct cpufreq_policy *policy) policy_dbs->idle_periods = idle_periods; + qos_min_load = cpufreq_minload_qos_limit(); + if (qos_min_load > max_load) + max_load = qos_min_load; + return max_load; } EXPORT_SYMBOL_GPL(dbs_update); -- 2.15.0
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