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| author | Thierry Reding <treding@nvidia.com> | 2023-06-09 15:44:08 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2023-06-26 13:03:13 +0300 |
| commit | 04bf1fe478d81868308bc91b4a1bce50d693f203 (patch) | |
| tree | bf3d7f08e629c4def7246374cb5a8ab3ee8d29ea /drivers/thermal/Kconfig | |
| parent | 598e1afca47fdbb302ce8d288b06bcc8728efc6c (diff) | |
| download | linux-04bf1fe478d81868308bc91b4a1bce50d693f203.tar.xz | |
thermal: Allow selecting the bang-bang governor as default
For many setups the bang-bang governor is exactly what we want. Many
ARM SoC-based devices use fans to cool down the entire SoC and that
works well only with the bang-bang governor because it uses the
hysteresis in order to let the fan run for a while to cool the SoC
down below the trip point before switching it off again.
The step-wise governor will behave strangely in these situations. It
doesn't use the hysteresis, so it can lead to situations where the fan
is turned on for only a very brief period and then is switched back off,
only to get switched back on again very quickly because the SoC hasn't
cooled down very much.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230609124408.3788680-1-thierry.reding@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/thermal/Kconfig')
| -rw-r--r-- | drivers/thermal/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 4cd7ab707315..19a4b33cb564 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -130,6 +130,14 @@ config THERMAL_DEFAULT_GOV_POWER_ALLOCATOR system and device power allocation. This governor can only operate on cooling devices that implement the power API. +config THERMAL_DEFAULT_GOV_BANG_BANG + bool "bang_bang" + depends on THERMAL_GOV_BANG_BANG + help + Use the bang_bang governor as default. This throttles the + devices one step at the time, taking into account the trip + point hysteresis. + endchoice config THERMAL_GOV_FAIR_SHARE |