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| author | Dmitry Osipenko <digetx@gmail.com> | 2020-04-03 01:24:48 +0300 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2020-05-28 18:02:39 +0900 |
| commit | d2216ba3ebea8d8864c5094526b8f9302c01021c (patch) | |
| tree | 70e9fcfd6a4787aced7d1c8910d09dd85933ec31 /drivers/devfreq | |
| parent | 9cb1fd0efd195590b828b9b865421ad345a4a145 (diff) | |
| download | lwn-d2216ba3ebea8d8864c5094526b8f9302c01021c.tar.gz lwn-d2216ba3ebea8d8864c5094526b8f9302c01021c.zip | |
PM / devfreq: tegra30: Make CPUFreq notifier to take into account boosting
We're taking into account both HW memory-accesses + CPU activity based on
current CPU's frequency. For memory-accesses there is a kind of hysteresis
in a form of "boosting" which is managed by the tegra30-devfreq driver.
If current HW memory activity is higher than activity judged based of the
CPU's frequency, then there is no need to schedule cpufreq_update_work
because the result of the work will be a NO-OP. And thus,
tegra_actmon_cpufreq_contribution() should return 0, meaning that at the
moment CPU frequency doesn't contribute anything to the final decision
about required memory clock rate.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/tegra30-devfreq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 28b2c7ca416e..dfc3ac93c584 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -420,7 +420,7 @@ tegra_actmon_cpufreq_contribution(struct tegra_devfreq *tegra, static_cpu_emc_freq = actmon_cpu_to_emc_rate(tegra, cpu_freq); - if (dev_freq >= static_cpu_emc_freq) + if (dev_freq + actmon_dev->boost_freq >= static_cpu_emc_freq) return 0; return static_cpu_emc_freq; |